Natural Diamonds
Certified Stones
Fine Jewelry Trade
Est. 2005 · Bangkok, Thailand
DS DIAM Co., Ltd. — Bangkok's established diamond wholesaler, supplying white, black and fancy color diamonds in round and fancy cuts to jewelry manufacturers and retailers since 2005.
About DS DIAM
DS DIAM Co., Ltd. is one of Bangkok's most experienced diamond and pearl wholesalers, supplying white, black, and fancy colour diamonds in round brilliant and fancy cuts, as well as South Sea and freshwater pearls. As the 2nd biggest importer of pearls in Thailand, we serve jewelry manufacturers and retailers with professionally certified stones and dependable trade service from Silom — Bangkok's financial and gem trading district — since 2005.
Certifications
Our Diamonds & Pearls
Every stone in our inventory is certified and available for trade buyers and manufacturers. From premium diamonds to exquisite pearls — contact us for current stock lists and pricing.
Premium white diamonds in D–Z colour range. Round brilliant and fancy cuts, melee and calibrated sizes available in certified lots.
Natural fancy colour diamonds including yellows, pinks, and blues. Each stone individually certified for colour origin.
Natural black diamonds for contemporary jewelry design. Available in round, cushion, and fancy shapes in wholesale parcels.
Pear, oval, marquise, princess, emerald and cushion cuts. Matched melee parcels and calibrated diamonds for manufacturers from 0.005ct upward.
DS DIAM is proud to be the second largest importer of pearls in Thailand. We supply exquisite South Sea and freshwater pearls — matched sets and loose stones for jewelry manufacturers seeking the finest complementary stones alongside diamond collections.
Our Markets
| Years Active | 20+ |
| Location | Silom Soi 19, JTC 20th Floor |
| Trade Relationships | Established |
| Operational Status | Full Hub |
Bangkok is the centre of our operations and the foundation of our twenty-year trade history. All sourcing and fulfilment flows through our Silom office.
Beyond our home market, DS DIAM is building select trade relationships with buyers in Vietnam, Indonesia, and across Southeast Asia — primarily through our presence at the Thai Gem & Jewelry Fair. Visit us at Booth B 18 this September 8–12, 2026.
Our approach is deliberate: trust in the diamond trade is built through consistency, expertise, and face-to-face relationships.
"In this industry, relationships are measured in decades, not transactions."
— DS DIAM Co., Ltd.
Get in Touch