Product/Service Highlights

Longtom C.Z Company

Founded in 1990, Longtom Gems Company has strived to manufacture the best quality C.Z. and synthetic stones. 30 years of expertise make us a world leader in the lapidary industry, and our brand AMOUR becomes a synonym for stones with perfect symmetry, optimized angels, and dazzling brilliance. Understanding the importance of the rough, other than importing from European countries, we also produce our own corundum to ensure the supply and quality.

2014 is another milestone for us when MCG was established. MCG specializes in top quality machine-cut semi-precious stones, including Citrine, Amethyst, Blue Topaz, and Chrome Diopside etc., targeting European watch manufacturers and luxury jewelry makers.

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Longtom C.Z Company

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