The OOO Edit

A pair of round brilliant diamond solitaire studs beside a jeweller's loupe on a deep green surface
buying guide

Do Lab-Grown Diamond Studs Come With a Certificate?

At Carat Club Co., diamond studs 0.5 carat and up are individually IGI-certified; smaller stones...
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IGI-certified lab-grown diamond solitaire studs from Carat Club Co.
buying guide

IGI vs GIA for Lab-Grown Diamonds: Which Certificate Should You Trust?

IGI grades most lab-grown diamonds; GIA reports are rarer and cost more. Both are legitimate....
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Diamond studs resting on overlapping blank certificate documents with jeweller's tweezers
Buying Guide

IGI or GIA: Does It Actually Matter Which Lab Graded Your Diamond?

GIA and IGI are the two names you will see on a diamond report, and...
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A single diamond stud isolated on a bone-white surface under clinical lighting
Buying Guide

Type IIa Diamonds: What the Term Means and When It Matters

Type IIa sounds like a grade. It is not. It is a classification of chemical...
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Diamond solitaire studs resting on a folded laboratory report beside a jeweller's loupe
Buying Guide

How to Read an IGI Report: The Four Lines That Actually Matter

An IGI report has about thirty data points on it and most people only read...
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