Above Diamond @ Siam Square One Fl.3
Unit SS #3031, 388 Rama I Rd, Khwaeng Pathum Wan, Pathum Wan, Bangkok 10330
Few custom jewelers in Bangkok carry a verifiable family lineage that stretches back to Ban Mo, the city's original diamond district. The GIA certification standard keeps stone quality honest, and the lifetime warranty plus free resizing policy makes this a genuinely low-risk place to commission something significant. For expats buying an engagement ring far from home, that paper trail matters more than any shop aesthetic.
Step through the entrance at Unit SS #3031 on the third floor and the floor space contracts around you in the best possible way: boutique-scale, with display cases close enough that the stones catch light at arm's reach rather than across a room. The ambient tone is quiet, the kind of purposeful quiet that signals a business selling one thing and doing it well.\n\nThe backstory is real. Four generations.\n\nAbove Diamond traces its roots to Ban Mo, Bangkok's original diamond trading district, where the Thai saying "If you want to buy a beautiful diamond, go to Ban Mo" has been passed down long enough to outlast several retail trends. The family moved that inherited expertise into a modern studio format, and the Siam Square One location is where that translation becomes visible: GIA-certified diamonds, conflict-free sourcing, and a stone-selection process the brand describes as hand-picking each diamond "for its brilliance and character" rather than filling a case from wholesale lots. Every stone that reaches a display tray here has been individually assessed against that standard.\n\nThe custom ring process is the core offering. Styles span solitaire, pavé, halo, hidden halo, side-stone, and nature-inspired settings, with named signature designs including Anya, Belle, Maeve, and Glaze. Consultation happens in-studio or online, and the finished piece ships worldwide. Practical commitments built into every order: lifetime warranty, free resizing, free engraving, and an annual care package. Men's wedding rings are stocked alongside bridal pieces, which is worth noting for couples who want to handle both commissions in one visit.\n\nHours run 11AM to 7PM daily. Budget more time than you expect for a first visit if you plan to discuss a custom piece; the design consultation is not a quick transaction.