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Insights & Guides

The Guru Diam Blog

Expert articles on lab-grown diamonds, wholesale sourcing strategies, and the latest trends shaping the jewelry industry.

3 Carat Natural Diamond Guide
15 min read

3 Carat Natural Diamond Guide

A 3 carat natural diamond sits well above the size most buyers shop at casually — it's a genuine statement stone, rare enough in natural rough that...

Who Grades Diamonds? IGI vs. GIA vs. GCAL
18 min read

Who Grades Diamonds? IGI vs. GIA vs. GCAL

A diamond grader is a trained gemologist working for an independent third-party laboratory — not the seller — who examines a loose diamond under...

Ethically Sourced Diamonds Guide
15 min read

Ethically Sourced Diamonds Guide

Ethically sourced diamonds are stones whose origin and production can be verified as free from the human rights abuses, conflict financing, and

Cathedral Setting Ring: Full Guide
17 min read

Cathedral Setting Ring: Full Guide

A cathedral setting is a ring style where the shank rises up in two arching, curved sections on either side of the center stone before meeting the head.

Diamond Clarity Chart Guide
18 min read

Diamond Clarity Chart Guide

A diamond clarity chart ranks diamonds from Flawless (FL) down to Included (I3) based on the number, size, position, and visibility of internal inclusions and surface blemishes under 10x magnification.