How to Choose a Lab-Grown Diamond Brand

More and more brands in Japan now carry lab-grown diamonds. This page shares four criteria that help you choose one.

01. A certificate

Diamond quality cannot be judged by eye. Certificates from IGI or GIA ground both quality and price. At ANNA DIAMOND, stones of 0.5 carat and above come with an IGI certificate.

02. Clear quality standards

Lab-grown diamonds vary widely in quality. A brand that states its selection standards is one you can trust. Ours: F colour or above, VS clarity or above, Good cut or above.

03. A place to see the real thing

Photographs and real brilliance differ. Our gallery in Daikanyama, Tokyo, welcomes you without a reservation.

04. After care

Free returns within 7 days, free first resizing, and free cleaning for life.

For price ranges and materials, see the lab-grown diamond page and each guide.