Frequently Asked Questions
A well-fitted bracelet should feel secure yet comfortable, allowing it to move slightly on the wrist without slipping off.
To measure for a tennis bracelet, wrap a flexible measuring tape or a piece of string snugly around your wrist at the point where you want to wear the bracelet. Then, either note the measurement on the tape measure or mark the string and measure it against a ruler. For a comfortable fit, add about 0.5 to 1 inch to your wrist measurement.
Typical sizing guide:
• 6 inches / 15cm : Smaller wrists
• 6.3 inches / 16cm : Average wrist size
• 7 inches / 17.8cm : Larger wrists
These sizes work for most buyers in Asia and Singapore, but measuring your wrist ensures the best fit. Schedule an appointment with us for a fitting session.
For tennis bracelets, total carat weight is more relevant than individual stone size. They determine the entire look of the bracelet on your wrist.
Typical ranges include:
• 2–3 carats total (2mm width): Elegant and minimal
• 3–5 carats total(3mm width): Classic luxury look
• 5+ carats total (>4mm width): Bold statement bracelet
Our diamonds are sourced with the strictest quality standards, handpicked by our experts, who examine each stone with their own eyes. Some key differentiating factors include:
- IGI certified CVD stones
- Made with 100% pure carbon, no nitrogen
- No BMG ( "Brown, Green, or Milky" - refers to a diamond's background hue or shade)
- No bluish or greyish tones or lines
- Highest possible sparkle or lustre, which is a diamond quality not captured within the 4 Cs of diamond certification
Yes, we have various diamond ring designs available for private viewing appointments at our Centrepoint showroom. Please contact us to discuss availability.
Absolutely! Chemically, physically, and optically, lab grown diamonds are identical to natural ones. They're real diamonds with the same crystal structure and beautiful sparkle as natural diamonds. Lab grown diamonds also have the same famous Mohs hardness of 10. They're just as durable as natural diamonds and indistinguishable without their inscriptions. Lab grown diamonds have the same thermal and electrical conductivity as mined diamonds and they will pass a diamond tester exam.
Note that lab diamonds are different from other types of non-diamond stones such as cubic zirconia, moissanite and diamond stimulants. They are not made of the same structure and will generally tarnish significantly with daily wear.
We offer lifetime resizing, repairs and adjustments if you purchase one of our products.
If there is a defect, please send us an email with photos of the issue as soon as you detect it. If we determine that the issue is due to a manufacturing defect, we will repair or replace the item for you. If it is not caused by a manufacturing defect but by normal wear and tear, we will repair it with a fee.
Definitely. We can work with you to custom make a unique design with specific materials, diamond shape/size. For intricate designs requiring mockups and multiple revisions, a small design fee will be collected upfront. The design fee is folded into final cost if order goes ahead, but not refundable otherwise.
50% upfront payment is required before final production.
The process typically takes 4-10 weeks from design confirmation to delivery.
Typically, tennis bracelets do not come with certification due to small individual diamond carat weights. However, we offer the option to add on IGI certification for our tennis bracelets at an additional cost of $280 - $350. An additional 3-4 weeks lead time will also be required as each completed bracelet has to be physically sent to IGI for the inspection and certification process.
Learn How To Shop for a Tennis Bracelet
Best Tennis Bracelets: Lab-Grown vs Natural Diamonds
Tennis bracelets are more than jewellery — they’re a style signature. A seamless line of diamonds around the wrist evokes effortless glamour. Today, the tennis bracelet remains a perfect balance — subtle enough for everyday wear, yet bold enough to signal elegance. At Carat Heritage, we reimagine that classic with lab-grown brilliance at its core.
How to Choose the Perfect Tennis Bracelet: Diamond Quality, Metals & Sizing Guide
A tennis bracelet is one of the most versatile pieces of fine jewellery you can own. Elegant enough for formal events, yet subtle enough for everyday wear, it’s the kind of piece that instantly elevates your style.
But with so many options available, many shoppers ask the same question: how do you choose the perfect tennis bracelet?
Understanding IGI Certification for Lab Grown Diamonds
One of the most recognized institutions for certifying lab grown diamonds is the International Gemological Institute (IGI). If you're considering purchasing a lab grown diamond, understanding IGI certification can help you make an informed decision.
IGI Certification
All diamonds 0.5carat and above comes with individual IGI (International Gemological Institute) certificates proving the cut, color, clarity and carat size, guaranteeing its authenticity.
For tennis bracelets which are typically crafted with smaller diamonds, there is an option to send your completed bracelet for IGI certification. This takes 3-4 additional weeks and an additional $280 - $350.
You will receive a physical copy and an online link to the virtual copy of your certificate on the official IGI.org website.
IGI is one of the world’s largest independent grading and accreditation services providers. IGI grades diamonds, gemstones and jewelry in more locations around the world than any other gemological organization.
