Are diamonds from Costco real?

Costco offers our members high quality jewelry at an exceptional value. Our team of GIA Graduate Gemologists inspect every diamond to ensure it meets Costco’s strict quality standards. We only sell natural and untreated diamonds

What clarity are Costco diamonds?

VS2

Is Costco a good place to buy engagement ring?

Overall, Costco diamonds are of decent quality and offer great value, as long as they’re GIA certified. You can find a ring for 50% less than at other big-name jewelry stores. But compared to online retailers, Costco cannot match their selections, customization, or service.

Which brand of diamond is the best?

Top Diamond brands in the world

Harry Winston.
Cartier.
Tiffany and Co.
De Beers.
Blue Nile.
David Yurman.
Chopard.
Zale.