Natural Sapphires
Ruby Collections
Emerald Selection
Precision Cut Stones
Ethical Sourcing
Worldwide Shipping
Custom Cuts Available
Trusted Since 1980
Ethical Mining Practices
Hand Polished Gems
Rare Tourmalines
Tanzanite Wonders
Spinel Variety
Garnet Elegance
Tourmaline Rainbow
Sapphire Fancy Colors
Custom Jewelry Design
Matching Gem Pairs
Investment Grade Gems
Certified Clarity
Cushion Cut Options
Round Brilliant Gems
Fancy Cut Shapes
High-Quality Rubies
Luxury Gem Packaging
Gemstone Education
Bespoke Gem Services
Global Gem Network
Is a family-owned colored gemstone company, founded by menahem sevdermish fga and joined by his son, kobi, in 2001.
Member Since 2025
Member Since 2012
Member Since 1985
Member Since 1986
The business operates worldwide from mine right through to the wholesale market.
Menahem and kobi sevdermish, together, source the rough in various parts of the world particularly in africa, cutting and polishing the stones in the company-owned lapidary in bangkok.
The success of advanced quality lies in its experience coupled with its youth, its supreme professionalism, exclusive and precise cutting, the range and diversity of its colored gemstone products, and the emphasis on top quality service provided to its clients.
Discover a world of individual brilliance. Our collection of loose gemstones features a vast array of colors, cuts, and carats, perfect for collectors or creating your own bespoke piece of jewelry.
For jewelers, designers, and avid collectors, our gemstone parcels offer exceptional value. These curated lots contain multiple stones, allowing for creative freedom and a variety of applications.
Bring your vision to life with our custom design services. Collaborate with our expert designers to create a one-of-a-kind piece of jewelry that tells your unique story, centered around the gemstone of your choice.