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 wholesalers, supplying white, black, and fancy colour diamonds in round brilliant and fancy cuts. Operating from Silom — Bangkok's financial and gem trading district — since 2005, we serve jewelry manufacturers and retailers with professionally certified stones and dependable trade service.
Certifications
Our Diamonds
Every diamond in our inventory is certified and available for trade buyers and manufacturers. 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 black diamonds for contemporary jewelry design. Available in round, cushion, and fancy shapes in wholesale parcels.
Natural fancy colour diamonds including yellows, pinks, and blues. Each stone individually certified for colour origin.
Matched melee parcels and calibrated diamonds for manufacturers. Consistent quality across sizes from 0.005ct upward.
Pear, oval, marquise, princess, emerald and cushion cuts. Sourced to specification for design-led jewelry houses.
Select South Sea and freshwater pearls for jewelry manufacturers seeking 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 Bangkok Gems & Jewelry Fair.
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.
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