Jewellery & Watch

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Jewellery & Watch Suppliers and Manufacturers

Loose Stones & Raw Materials

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Loose Stones & Raw Materials Suppliers and Manufacturers

Loose Diamonds

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Loose Diamonds Suppliers and Manufacturers

Hsin Yi Gems (HK) Co Ltd

This is a collection of synthetic sapphires in royal blue. Each piece comes with a round cut and features delicate facets. These dazzling stones are great for making assorted fashionable jewelry and accessories.    Excellent craftsmanship.    Other designs are available.

Synthetic Sapphire

Cubic Craft Limited

How theseLab grown gemstonesare made?Most of them are created with the methods byPulled Czochralski , TheCzochralski process, uses radio waves to melt the aluminum oxide. A rod tipped with a seed crystal is inserted into the mixture and slowly rotated and pulled out, creating a column of Colored stones. Lab Grown Blue Sapphire Asscher Shape Cornflower Blue Lab Grown Sapphire Gemstone  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Lab Grown Blue Sapphire Asscher Shape Cornflower Blue Lab Grown Sapphire Gemstone

The Pulled Czochralski Method, is an advanced process designed to create flawless single crystals. By melting raw materials at high temperatures and carefully pulling a seed crystal from the molten material, this method results in gemstones of unmatched clarity and brilliance. Each Pulled Czochralski Purple Red Sapphire is optically, chemically, and physically identical to its natural counterpart. With its vibrant purple-red hues and sophisticated oval shape, this lab-created sapphire is ideal for creating timeless jewelry that exudes luxury and refinement.  Type:Lab-Created Purple Red SapphireMethod:Pulled Czochralski MethodColor:Purple and Red BlendMOHS Hardness:9Quality: AAALab Created Gemstone Purple Red Sapphire Heart Shape for Jewelry Making  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT. Lab Created Sapphire ,MOISANITE,SPINEL,CORUNDUM,NANO,OPAL,NATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Lab Created Gemstone Purple Red Sapphire Heart Shape for Jewelry Making

Oval Cut Gems Lab Grown Cornflower Blue Sapphire Wholesale Gemstones

Apple Green Diamond Inc

This round brilliant sapphire shimmers with an alluring Kashmir color. The core of this sapphire is created in the lab with many procedures. The timeless blue sapphire makes a wonderful addition to any jewelry design. 	 Excellent craftsmanship. 	 Available in other designs.  

DIAMONDLITE- Sapphire

How theseLab grown gemstonesare made?Most of them are created with the methods byPulled Czochralski , TheCzochralski process, uses radio waves to melt the aluminum oxide. A rod tipped with a seed crystal is inserted into the mixture and slowly rotated and pulled out, creating a column of Colored stones.  Cornflower Blue Sapphire Lab Created Round Cut Loose Gemstones Wholesale Price for Jewelry Making  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Cornflower Blue Sapphire Lab Created Round Cut Loose Gemstones Wholesale Price for Jewelry Making

BAOZUAN(HK)LIMITED

SAPPHIRE GEMSTONES Colour: bule Size: 0.8mm-2.0mm, Clarity: A- to A++   

(GEMSTONES) SAPPHIRE  

Why Choose Lab Grown PARAIBA? It possesses the same enchanting neon blue color as natural Paraiba tourmaline, but at a much lower price, and is produced in a sustainable and environmentally friendly manner. Affordable luxury- Enjoy the same neon luster and brilliant radiance without having to pay a high price.Environmentally friendly - No mining required, no damage to the ecology - Only pure and responsibly created beauty.Exactly the same appearance as natural Paraiba stones - Manufactured with cutting-edge technology, its optical properties are exactly the same as those of natural Paraiba stones.Lab Created Sapphire stone color chart:CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Paraiba blue laboratory gemstones Octagon step cut lab grown Gemstone

Lab Sapphire Royal Blue Oval

Lab Grown Stones-very popular in the market Lab color gems, lab grown stones is like natural stones. Only some color (Paraiba, tsavorite) is YAG. Others same as natrual stones. They like lab diamond, instead of natural stones market. You can pay small money and get the same beatiful gemstones. Setting into the jewelry.     We can order as your picture drawing. Tell us the color, shape, size you want. We only use high quality rough to cut lab grown gems, the market mixed with cheap rough, with black point, crack , not clearn, color no good... Please pay attention to it.  

Lab Grown stones Emerald, Sapphire, Ruby, Paraiba, Alex, Padparadscha, Colbalt spinel

Pulled Czochralski Cobalt Blue Spinel This lab-created heart-shaped Spinel symbolizes passion and elegance, offering the brilliance of natural gems with the precision of modern techniques. Color: Cobalt Blue MOHS Hardness: 8 The Pulled Czochralski Method, pioneered by Polish scientist Jan Czochralski, is a state-of-the-art process designed to create flawless single crystals. By melting raw materials at high temperatures and precisely pulling a seed crystal from the melt, this method ensures that each gemstone is of exceptional clarity and brilliance. This process guarantees that each Pulled Czochralski Cobalt Blue Spinel is optically, chemically, and physically identical to its natural counterpart. With its rich cobalt blue color and heart shape, this lab-created Spinel makes a bold and beautiful choice for unique jewelry designs, perfect for those seeking a touch of modern sophistication High Quality Lab Grown Cobalt Spinel Blue Color Stone Octagon Step Cut Emerald for Jewelry Making  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT. Lab Created Sapphire ,MOISANITE,SPINEL,CORUNDUM,NANO,OPAL,NATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

High Quality Lab Grown Cobalt Spinel Blue Color Stone Octagon Step Cut Emerald for Jewelry Making

Pulled Czochralski Cobalt Blue Spinel This lab-created heart-shaped Spinel symbolizes passion and elegance, offering the brilliance of natural gems with the precision of modern techniques. Color: Cobalt Blue MOHS Hardness: 8 The Pulled Czochralski Method, pioneered by Polish scientist Jan Czochralski, is a state-of-the-art process designed to create flawless single crystals. By melting raw materials at high temperatures and precisely pulling a seed crystal from the melt, this method ensures that each gemstone is of exceptional clarity and brilliance. This process guarantees that each Pulled Czochralski Cobalt Blue Spinel is optically, chemically, and physically identical to its natural counterpart. With its rich cobalt blue color and heart shape, this lab-created Spinel makes a bold and beautiful choice for unique jewelry designs, perfect for those seeking a touch of modern sophistication Lab Grown Coable Blue Spinel Round Shape Brilliant Cut accept custom  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT. Lab Created Sapphire ,MOISANITE,SPINEL,CORUNDUM,NANO,OPAL,NATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Lab Grown Coable Blue Spinel Round Shape Brilliant Cut accept custom

There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald?Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone.  Lab Zambian Emerald Square shape Princess Cut Hydrothermal Gemstone lab Created Sapphire stone Color Chart: CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,We supply Lab stone,such as CVD/HPHT.LAB CREATED SAPPHIRE.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact me if you have any questions. 

Lab Zambian Emerald Square shape Princess Cut Hydrothermal Gemstone

There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald?Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone.  Hydrothermal Lab Created Zambia Emerald Round Shape Stone 2.0MM Melee stone LAB CREATED SAPPHIRE COLOR CHART  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,We supply Lab stone,such as CVD/HPHT.LAB CREATED SAPPHIRE.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact me if you have any questions.  

Hydrothermal Lab Created  Zambia Emerald Round Shape Stone 2.0MM  Melee stone

Nano Blue Color Round Shape checker cut flat / checker board with different color &amp; various sizes We provide different type of gemstone - synthetic corundum, synthetic spinel, cubic zirconia, nano and glass etc. Available in different cuttingWith wide-range of sizes and shapesPerfect for jewelry setting like pendants, necklaces, bracelet, earrings and ringsFine polished &amp; Nicely facetsResist heat upto 800°C

Nano Blue Color Round Shape checker cut flat / checker board

Pulled Czochralski Cobalt Blue Spinel This lab-created heart-shaped Spinel symbolizes passion and elegance, offering the brilliance of natural gems with the precision of modern techniques. Color: Cobalt Blue MOHS Hardness: 8 The Pulled Czochralski Method, pioneered by Polish scientist Jan Czochralski, is a state-of-the-art process designed to create flawless single crystals. By melting raw materials at high temperatures and precisely pulling a seed crystal from the melt, this method ensures that each gemstone is of exceptional clarity and brilliance. This process guarantees that each Pulled Czochralski Cobalt Blue Spinel is optically, chemically, and physically identical to its natural counterpart. With its rich cobalt blue color and heart shape, this lab-created Spinel makes a bold and beautiful choice for unique jewelry designs, perfect for those seeking a touch of modern sophistication Lab Grown Cobalt Blue Spinel Gemstone Oval Shape for Luxury Jewelry  Lab Created Stone color chart:  More shapes are availableble:  CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT. Lab Created Sapphire ,MOISANITE,SPINEL,CORUNDUM,NANO,OPAL,NATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions. 

Lab Grown Cobalt Blue Spinel Gemstone Oval Shape for Luxury Jewelry

Sunny Gems Limited

Introducing our exquisite collection of Blue Sapphire radiating elegance and timeless beauty. Each piece showcases the captivating allure of this precious gemstone, symbolizing wisdom, loyalty, and serenity. Experience the enchantment of Blue Sapphire with our meticulously crafted rings, earrings, necklaces, and bracelets. Our skilled artisans have hand-selected the finest quality gemstones, ensuring intense hues of blue that will leave you mesmerized. Indulge yourself or surprise a loved one with the gift of Blue Sapphire, a token of protection, prosperity, and inner peace. Explore our collection today and embrace the allure of this extraordinary gemstone. Blue sapphire is a highly sought-after gemstone known for its captivating blue color. It belongs to the corundum family of gemstones, with its blue hue being caused by trace elements of titanium and iron. Here are some key aspects and uses of blue sapphire: 1. Color and Quality: Blue sapphires come in various shades of blue, ranging from light to dark, with intense, vivid blues considered the most valuable. The presence of asterism (star effect) or a velvety texture called "cornflower blue" further enhances its desirability. 2. Symbolism and Meaning: Blue sapphire has been associated with wisdom, loyalty, and nobility. It is believed to enhance mental clarity, intuition, and spiritual connection. This gemstone is often associated with serenity, calmness, and protection. 3. Jewelry: Blue sapphires are widely used in jewelry, especially in engagement rings, necklaces, bracelets, and earrings. They are often set with diamonds or other gemstones to create stunning and eye-catching designs. 4. Astrological Significance: Blue sapphire is considered the birthstone for September and is associated with the zodiac sign of Virgo. It is also known as the stone of Saturn in Vedic astrology and is believed to bring luck, prosperity, and protection to its wearer. 5. Durability: Blue sapphire is one of the hardest gemstones, second only to diamonds. With a hardness of 9 on the Mohs scale, it is highly durable and suitable for everyday wear. When purchasing blue sapphire, it is important to consider factors such as color, clarity, cut, and carat weight to ensure its quality and authenticity. Whether used as a personal adornment or a precious gift, blue sapphire continues to captivate with its timeless beauty and deep symbolism. 

Blue Sapphire Cut

Why Choose Lab Grown PARAIBA? It possesses the same enchanting neon blue color as natural Paraiba tourmaline, but at a much lower price, and is produced in a sustainable and environmentally friendly manner. Affordable luxury- Enjoy the same neon luster and brilliant radiance without having to pay a high price.Environmentally friendly - No mining required, no damage to the ecology - Only pure and responsibly created beauty.Exactly the same appearance as natural Paraiba stones - Manufactured with cutting-edge technology, its optical properties are exactly the same as those of natural Paraiba stones.Lab Created Sapphire stone color chart:CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact us if you have any questions.

Lab Paraiba Gem Cushion Oval Pear Hexagon Oval Pear Princess Cut Blue Paraiba Stones

Why Choose Lab Grown PARAIBA? It possesses the same enchanting neon blue color as natural Paraiba tourmaline, but at a much lower price, and is produced in a sustainable and environmentally friendly manner. Affordable luxury- Enjoy the same neon luster and brilliant radiance without having to pay a high price.Environmentally friendly - No mining required, no damage to the ecology - Only pure and responsibly created beauty.Exactly the same appearance as natural Paraiba stones - Manufactured with cutting-edge technology, its optical properties are exactly the same as those of natural Paraiba stones.Laboratory Paraiba Blue Stone with Ice Cracking Neon Blue Oval Shape StoneLab Created Sapphire Stone Color Chart:CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,we supply Lab stone,such as CVD/HPHT.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color.

Laboratory Paraiba Blue Stone with Ice Cracking Neon Blue Oval Shape Stone 

There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald? Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone. Hotselling Lab Grown Green Emerald Various Size Lab Zambia Emerald Octagon step for Jewelry  LAB CREATED SAPPHIRE COLOR CHART:   CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,We supply Lab stone,such as CVD/HPHT.LAB CREATED SAPPHIRE.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact me if you have any questions. 

Hotselling Lab Grown Green Emerald Various Size Lab Zambia Emerald Octagon step for Jewelry

There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald? Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone. Lab Grown 1.5x3mm to 6x12mm Zambian Emerald Marquise Gemstone Green Color for Jewelry Making Method: Hydrothermal (Identical to natural)水热法 Chemical Formula: Be3Al2 (SiO3) 6 (Identical to natural) Shape: Marquise Type: Hand Cut  LAB CREATED SAPPHIRE COLOR CHART: CUBIC CRAFT LIMITED (Chang Jiang Gems) build in 1994,We supply Lab stone,such as CVD/HPHT.LAB CREATED SAPPHIRE.MOISANITE,SPINEL,CORUNDUM,NANO,OPALNATURAL STONE,GLASS in many shape/size/color. Feel free to contact me if you have any questions. 

Lab Grown 1.5x3mm to 6x12mm Zambian Emerald Marquise Gemstone Green Color for Jewelry Making

Anupam Gems Japan Ltd

Showcased here is a beautiful re-crystallized sapphire in oval shape. The charming blue shine lends a glamorous touch to your jewelry. Re-crystallized emerald, ruby and diamond nano coated CZ are also available.

 
  Made from 100 % natural stone in Japan using nano tech. 
  Same chemical&nbsp;and physical properties but just for a fraction of its natural price. 
 

Re-Crystallized Sapphire

Lab padparadscha-  Customization guide:Adjustable parameters include size (0.5-20 carats) and color intensity to match specific design needs. For bulk orders,uniformity ensures seamless pairing in multi-stone jewelry sets.  We can cut many shape as you like:   Grown way: ***Czochralski method is a core technology for growing single-crystal gemstones from a melt.This method is homologous with the technology used industrially to grow semiconductor silicon single crystals. Its coreprinciple is as follows: 1.Raw Material Melting:The gemstone's raw materials (e.g., aluminum oxide Al2O3 and dopants) are placed into ahigh-temperature-resistant crucible (e.g., iridium, molybdenum, or graphite crucibles) and heated to extremely hightemperatures (e.g., synthetic ruby requires heating above 2050℃) using induction coils or resistive heating untilcompletely melted.2.Contact and Crystallization: A small, oriented natural or synthetic gemstone seed crystal is slowly lowered and broughtinto contact with the melt surface.3.Pulling and Rotation: Under strictly controlled conditions, the seed crystal is slowly pulled upward while simultaneouslyrotating. The melt at the interface between the seed crystal and the melt continuously cools and crystallizes according tothe crystal structure of the seed, thereby growing a single crystal gemstone with the same orientation as the seed.4.Process Control: The entire process requires precise control of temperature gradient, pulling rate (typically 6-15millimeters per hour), and rotation speed to ensure uniformity and quality of crystal growth.Common steps in the process include "necking, shoulder expansion, diameter control, and tailing" to optimize the crystalstructure.Gemstone crystals grown by this method exhibit high optical homogeneity, low dislocation density, and can be grown tolarge sizes.It is one of the primary production methods for high-quality synthetic gemstones, especially corundum family gems.   

 Lab Padparadscha, Heart Shape gemstones 8x10, VVS, VS,1-10CTS

Lab padparadscha- Customization guide:Adjustable parameters include size (0.5-20 carats) and color intensity to match specific design needs. For bulk orders,uniformity ensures seamless pairing in multi-stone jewelry sets.  We can cut many shape as you like:   Grown way: ***Czochralski method is a core technology for growing single-crystal gemstones from a melt.This method is homologous with the technology used industrially to grow semiconductor silicon single crystals. Its coreprinciple is as follows: 1.Raw Material Melting:The gemstone's raw materials (e.g., aluminum oxide Al2O3 and dopants) are placed into ahigh-temperature-resistant crucible (e.g., iridium, molybdenum, or graphite crucibles) and heated to extremely hightemperatures (e.g., synthetic ruby requires heating above 2050℃) using induction coils or resistive heating untilcompletely melted.2.Contact and Crystallization: A small, oriented natural or synthetic gemstone seed crystal is slowly lowered and broughtinto contact with the melt surface.3.Pulling and Rotation: Under strictly controlled conditions, the seed crystal is slowly pulled upward while simultaneouslyrotating. The melt at the interface between the seed crystal and the melt continuously cools and crystallizes according tothe crystal structure of the seed, thereby growing a single crystal gemstone with the same orientation as the seed.4.Process Control: The entire process requires precise control of temperature gradient, pulling rate (typically 6-15millimeters per hour), and rotation speed to ensure uniformity and quality of crystal growth.Common steps in the process include "necking, shoulder expansion, diameter control, and tailing" to optimize the crystalstructure.Gemstone crystals grown by this method exhibit high optical homogeneity, low dislocation density, and can be grown tolarge sizes.It is one of the primary production methods for high-quality synthetic gemstones, especially corundum family gems.   

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