Trusted Suppliers & Networks – Stones are sourced from reputable and reliable suppliers who prioritize integrity and quality.

Direct Sourcing Trips to Thailand (When Needed) – Select trips to Thailand’s gem markets allow for in-person evaluation and selection of gemstones, ensuring higher control over quality and color.

Special Requests & Tailored Sourcing – For bespoke projects, sourcing is tailored to specific design requirements, including requests for rare or unique gem varieties.

In-House Cutting (For Select Projects) – When a design calls for precise control, select rough stones are cut or re-finished in-house to achieve the desired form and brilliance.

Every stone is evaluated for color, clarity, cut, and durability. Tools such as refractometers, dichroscopes, and magnification are used for preliminary identification and quality checks. For advanced testing or unusual cases, collaboration with professional gem labs is available to ensure authenticity and integrity.

While not every gem variety is featured online, Tsu’s has worked with a broad range of gemstones in projects past and present. The palette continues to expand as new designs call for unique stones, ensuring each creation feels both timeless and distinct.