ห้างเพชร หลีเสง LEE SENG JEWELRY
177 Phra Sumen Rd, Talat Yot, Phra Nakhon, Bangkok 10200
If you're stone-shopping in Bangkok and you've never bought a gem before, walk into Lee Seng before you walk into anywhere else — even if you don't buy here, you'll know what fair pricing looks like and what real certification means. Bring a stone you're considering elsewhere for a sanity check; they'll grade it honestly. Never haggle at this shop — the price is already the price.
Lee Seng Jewelry holds a 5.0 rating across 1,500+ reviews — the kind of number that doesn't happen in the gemstone trade by accident. The shop sits on Phra Sumen Road in the Talat Yot area of Phra Nakhon, deep in Bangkok's Old Town and within walking distance of Khao San, the Grand Palace, and the city's historic gem district.
The specialty is colored gemstones — Burmese rubies, Sri Lankan sapphires, Cambodian zircons, jade — sourced through long-standing supplier relationships and sold both loose and as finished pieces. Custom settings are the bread and butter: bring a stone you already own or pick one from the case, and the in-house workshop will design and build a setting to your specifications. Turnaround is typically 1–3 weeks depending on complexity.
What differentiates Lee Seng from the tourist-oriented gem shops that cluster around Khao San and the Grand Palace: every stone of consequence is sold with certification (GIA, AIGS, or equivalent), prices are non-negotiable in the bazaar-haggle sense (the price is the price, and it's fair), and the staff explain quality grading clearly rather than performing it.
This is also a working repair and restoration shop. Heirloom resetting, broken-clasp repairs, ring resizing, and pearl restringing are handled in-house. Bring the piece, get a written quote, and pick up when it's ready.
Open Monday through Saturday, 10 AM to 6:15 PM. Closed Sundays. Get there by MRT Sam Yot or a short Grab from Khao San; parking is limited but the shop will help arrange a nearby spot.