Yes. Lab-grown diamonds have the same essential chemical composition and crystal structure as mined diamonds. Their origin is different, not their status as diamonds.

Lab-grown diamonds are created in controlled facilities; natural diamonds form in the Earth. Both can be graded for the 4Cs. Prices and resale markets may differ.

The 4Cs are carat weight, color, clarity and cut. We can explain how each factor affects appearance and help you compare diamonds within your budget.

Qualifying lab-grown center diamonds of 1.00 ct or above are offered with IGI grading reports. For smaller stones, ask us which documentation is included with your specific piece.

Yes, for a diamond with an available grading report, request the report number and details before confirming your order.

No. Diamond specifications vary by stone. We will confirm the actual color, clarity, cut information and grading documentation for the stone you select.

Yes. Share a reference image or describe your preferred diamond shape, setting, metal, ring size and budget. Our team will guide you through the design.

Initial design consultation is complimentary. Any production, additional materials or specialized work will be quoted before you proceed.

For applicable bespoke orders, we prepare a CAD design for your review after the deposit and design details are confirmed. Production begins after design approval.

Many standard custom pieces take approximately 10–14 days after design approval. Complex pieces or special sourcing may take longer. Express production may be possible for selected designs; confirm the schedule before paying.

Material options depend on the design. Ask about 14K or 18K yellow, white or rose gold, and platinum for suitable custom pieces.

Visit the boutique for a fitting, or ask us for a ring-size guide. Tell us the sizing system you use (EU, US or another standard) before ordering.

Many designs can be resized, but full-eternity bands, intricate settings and rings with stones inside the band may have limitations. We will assess the design and confirm cost and timing first.

Visit Sphere Diamond at the Jewelry Zone, 1st Floor, CentralWorld, Bangkok, Thailand. For assistance, call +66 91 879 1473 or contact us via LINE or WhatsApp.

Our boutique is located in the Jewelry Zone, 1st Floor, CentralWorld, Bangkok, Thailand. You can call us at +66 91 879 1473. We are open Tuesday–Sunday, 12:00–19:00, and closed on Mondays.

Walk-in visits may be possible during opening hours. We recommend an appointment for diamond comparisons or a custom-design consultation.

Our listed boutique hours are Tuesday–Sunday, 12:00–19:00. Please contact us to confirm holiday hours before visiting.

The usual custom-order deposit is 30%. The remaining balance and payment schedule will be confirmed in your quotation.

Payment options include bank transfer, cash and credit card. Any card processing surcharge will be disclosed before payment; ask us about international payment options.

Prices and promotions can depend on the product and active offer. Ask us to confirm the current price and what is included in the quotation.

Custom orders are made to agreed specifications. Please request the applicable cancellation, return and deposit terms in writing before confirming your order. We do not offer a general diamond buy-back program.

Complimentary shipping is available for eligible orders. Confirm the destination, courier, tracking and any applicable conditions with our team.

International delivery may be arranged for eligible orders. Import taxes, customs clearance and local restrictions depend on the destination and should be confirmed before shipment.

Our jewelry is presented in Sphere Diamond packaging, with complimentary gift wrapping available. Ask about specific packaging options for your order.

Boutique collection can be arranged once your order is ready. Please confirm the collection date and any identification needed in advance.

Yes. Our team can assist with cleaning, inspections and advice on polishing, re-plating or repairs. Eligibility and charges depend on the service and jewelry condition.

Complimentary lifetime cleaning is offered for eligible Sphere Diamond pieces. Bring your jewelry to the boutique so our team can assess the safest cleaning method.

For suitable diamond-and-gold jewelry, use lukewarm water, a little mild soap and a soft brush; rinse carefully and dry with a lint-free cloth. Avoid this method for delicate, treated or porous gemstones, pearls and loose settings; ask us first.

Rhodium plating can wear with use. Re-plating is based on visible wear, personal preference and the condition of the setting, rather than a fixed schedule.

Stop wearing the piece and contact us for an inspection. Avoid home repairs, ultrasonic cleaning or further pressure on the setting.

After-sales support is available, but coverage varies by product and issue. Please check your receipt or warranty terms for inclusions, exclusions and any service charges.