Certified loose diamonds

Est. 2005 · Silom, Bangkok

Twenty years
in one square
mile of Silom.

A diamond and pearl house supplying manufacturers and retailers across Southeast Asia. Every stone certified by GIA or IGI. Trade only, and no minimum order.

Request stock list View the collection
20+Years in the trade
NoneMinimum order
GIA · IGIEvery stone certified
2ndPearl importer, Thailand
Thai Gem & Jewelry Fair 2026 8–12 September Booth B 18 Book a meeting
01The House

A trade built on
returning buyers.

DS DIAM Co., Ltd. has traded diamonds and pearls from Bangkok's gem district since 2005, supplying jewelry manufacturers and retailers across Thailand and Southeast Asia. Every stone we supply carries a GIA or IGI report — no exceptions, and no house-graded stones.

Our home market is Thailand. Beyond it we work with buyers in Vietnam, Indonesia and across Southeast Asia — most of whom we first met across a table at the Thai Gem & Jewelry Fair. In this trade, relationships are measured in decades rather than transactions.

GIA — Gemological Institute of America IGI — International Gemological Institute TGJTA & ITDCA member
The Bangkok diamond trade
Grading loose diamonds

"In this industry, relationships are
measured in decades, not transactions."

02The Collection

White, black
and fancy colour.

White diamonds, D–Z colour range

White

D–Z range
Round & fancy cut
GIA · IGI
Natural fancy colour diamonds

Fancy Colour

Yellow · Pink · Blue
Natural colour
Colour-origin report
Natural black diamonds

Black

Natural
Round · cushion · fancy
Wholesale parcels
Melee and calibrated diamonds

Melee

From 0.005 ct
Pear · oval · princess
Matched & calibrated
South Sea and freshwater pearls
03Pearls

Thailand's second
largest pearl importer.

South Sea and freshwater pearls, loose or in matched sets, supplied alongside the diamond parcels — so a manufacturer can source a full collection from one house.

South Sea Freshwater Matched sets Loose
04Trade Terms

How we work
with buyers.

Minimum orderNoneSingle stones through to full parcels. We quote either way.
Quote turnaroundThree business daysFrom a written specification to matching stones, certificates and trade pricing.
ShippingWorldwideInsured international shipping to trade buyers.
Memo & consignmentAvailableOffered to trade buyers. Ask when you send your specification.
BuyersTrade onlyManufacturers, retailers and jewelry traders. We do not sell to the public.
Wholesale diamond parcels

Meet us in person

Thai Gem & Jewelry Fair 2026
8–12 September · Booth B 18

Book a meeting
05Enquire

Send us a specification.

Office
919/260, JTC Building, 20th Floor
Silom Soi 19, Bangkok, Thailand
Telephone
+66 81 921 1844 (Bhavin)
+66 2 233 9837
+66 2 233 9838
Email & hours
info@dsdiambkk.com
Monday – Friday, 9:00 – 18:00 ICT
WhatsApp Bhavin LINE Chat

Or message us on WhatsApp
Thank you — we'll come back to you within three business days with matching stones and trade pricing.
Sorry, that didn't send. Please email info@dsdiambkk.com or message us on WhatsApp.

Trade buyers only · We never share your details