At what carat weight does a diamond require a GIA certificate?

A GIA certificate is a diamond grading report issued by the GIA (Gemological Institute of America), which specifies the details of a particular diamond, such as its carat weight, color, clarity, and cut, all verified according to international standards.

At what carat weight does a diamond require a GIA certificate?

Certificates are issued for diamonds weighing from 0.18ct up to several carats. The cost of obtaining a certificate varies depending on the laboratory. Therefore, not all diamonds weighing 0.18ct or less come with a certificate, as the price of a 0.18ct diamond is not very high; whether or not a GIA certificate is desired depends on the customer, as there is an additional cost involved. Very small diamonds generally do not come with certificates because it is not cost-effective.

What is the difference between a certified and a non-certified diamond?

This is another frequently asked question. A diamond with a certificate gives us confidence that it is a genuine, natural diamond with quality that matches the seller's claims.

As for diamonds without a certificate—typically those under 0.18ct—the shop will usually provide its own store warranty certificate instead. Therefore, you should always choose a reliable and trustworthy shop.

Gems Heritage, Central Ladprao Branch, 3rd Floor

10:00 AM - 8:00 PM / Monday - Sunday

(Located in the inner plaza zone, near the entrance to the Central Department Store)