STAR : 1.25MM TO 1.80MM SIZE  BRILLIANT CUT :- The term round diamond primarily refers to the "ROUND BRILLIANT CUT" Which is the most popular and versatile diamond shape in the world .its uses range form high-end fine jewelry to  specialized industrial .

USE:- Engagement Ring ,Stud Earring , Neckless and pendants , Bracelets 

Ease of Use: They are generally easier for beginners to pick up and place than square drills because they don't require perfect alignment to look good.

Visual Effect: They create a cross-stitch-like appearance with small gaps between the beads, resulting in a distinct "shimmer" rather than a solid mosaic. 

Precision Cutting: Diamond-tipped tools are used for surgery, engraving, and cutting glass or stone.

Heat Sinks: Due to high thermal conductivity, they are used in high-end electronics to dissipate heat.

Audio Equipment: Thin diamond membranes are used in high-quality speaker domes and record player needles.

diamond- diameter

While nature determined the color and clarity of a natural diamond, man is responsible for the cut quality which brings it to life. The planning, proportions, cutting precision and details of finish determine how brilliant, dispersive and scintillating the diamond will be. If the cutting factors under man's control are not optimized, the appearance of the diamond can be adversely affected.

Diamond faceting has changed over time, particularly as lighting has evolved. There are many shapes and cutting styles, each with different visual properties. The most popular diamond in the age of modern electric lighting is the Round Brilliant.

diamond- diameter

When a ray of light touches the surface, part of it is reflected back. This is called external refraction. The rest of the ray penetrates the stone and moves through it. This is known as refraction. The part of the ray reflected back to the surface exits, broken into spectral colors in a prism-like effect. This is known as dispersion. All of these elements contribute to the appearance of a diamond.

Elements of diamond beauty can be described as brilliance (all light returning to the eye), dispersion or 'fire' (seen as white light is broken into spectral colors), contrast patterns (contrasting light and dark areas created by the viewer's reflection) and scintillation or 'sparkle' (seen as the diamond, the light source or the observer move). These qualities combine to create the life of the diamond and the way it reacts to lighting and environment. 

diamond-clarity

Since diamonds form under extreme heat and pressure, internal and external characteristics are common. These characteristics help gemologists separate natural diamonds from synthetics and simulants, and identify individual stones.