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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.

How Much Is a 100 Carat Diamond Worth?
15 min read

How Much Is a 100 Carat Diamond Worth?

A 100 carat diamond is a stone weighing 20 grams — five times heavier than a standard 1-carat solitaire and larger than nearly any diamond most...

Diamond Bar Necklaces: A Trade Sourcing Guide
16 min read

Diamond Bar Necklaces: A Trade Sourcing Guide

A diamond bar necklace is a pendant necklace built around a slim, horizontal metal bar set with diamonds, worn at or just below the collarbone on a fine chain.

Diamond Dealers: How the Trade Works
16 min read

Diamond Dealers: How the Trade Works

A diamond dealer is a trade professional or business that buys and sells diamonds — loose stones, parcels, or occasionally rough — as their primary...

Blue Diamonds: A Trade Buying Guide
16 min read

Blue Diamonds: A Trade Buying Guide

A blue diamond is a diamond whose crystal structure contains trace amounts of boron, which absorbs red light and gives the stone a blue body color.

How to Clean a Diamond: Full Guide
15 min read

How to Clean a Diamond: Full Guide

A diamond is cleaned by soaking it briefly in warm water with a small amount of mild dish soap, then gently brushing the stone and setting

Portuguese Cut Diamond Guide
15 min read

Portuguese Cut Diamond Guide

A Portuguese cut diamond is a round brilliant variant cut with 32 additional facets — 76 facets total instead of the standard 58 — arranged in two...

Diamond Name Necklaces: Sourcing Guide
15 min read

Diamond Name Necklaces: Sourcing Guide

A diamond name necklace is a pendant necklace spelling out a full name or word in script or block lettering, with diamonds set along part or all of...

Rough Diamond Grading & Trade Guide
16 min read

Rough Diamond Grading & Trade Guide

A rough diamond is graded and traded through a classification system entirely separate from the 4Cs used for polished stones — rough is sorted into...