Certification

When you buy fine jewellery online, proof matters more than promises. Every Chaitra lab-grown diamond piece comes with two things you can check yourself: an IGI certificate for the diamonds and a BIS hallmark for the gold.

IGI certified lab-grown diamonds

Our lab-grown diamonds are certified by the International Gemological Institute (IGI), the world's largest grader of lab-grown diamonds. The report records:

• Carat weight, colour, clarity and cut, measured independently.
• That the diamond is laboratory-grown, stated clearly.
• A unique report number, often laser-inscribed on the girdle of solitaires.

How to check your IGI report

1. Go to igi.org and choose "Verify your report".
2. Enter the report number printed on your certificate.
3. Check that the carat, colour and clarity match your certificate and invoice.

Our diamonds are typically E to G in colour and VVS to VS in clarity. The exact grade of your piece is on its product page and certificate.

BIS hallmarked gold

Every piece in 14K, 18K or 22K gold is hallmarked under the Bureau of Indian Standards (BIS) scheme. The hallmark has three marks:

• The BIS logo.
• The purity, for example 18K750 for 18 karat (75% gold).
• A six-character HUID, a unique ID for that piece.

How to check your HUID

1. Download the BIS CARE app (Android or iOS).
2. Choose "Verify HUID" and enter the six characters from the hallmark.
3. The app shows the purity, the type of article and the hallmarking centre that tested it.

Gold Vermeil

Gold Vermeil pieces are 925 sterling silver with 2.5 microns of 18K gold, set with lab-grown diamonds. They are not solid gold, so they do not carry a gold hallmark. The product page lists the metal, gold thickness and stones for each piece.

Why it matters

Certification is what makes our buyback and lifetime exchange work. We value your piece against its certificate, so keep it safe with your invoice.