15 min read
Natural Oval Diamond: Buying Guide
How to evaluate a natural oval diamond — bow-tie effect, length-to-width ratio, cut quality, and how it compares to lab-grown oval stones.
Insights & Guides
The Guru Diam Blog
Expert articles on lab-grown diamonds, wholesale sourcing strategies, and the latest trends shaping the jewelry industry.
15 min read
Natural Radiant Cut Diamond Guide
What defines a natural radiant cut diamond, how it compares to emerald, asscher, and cushion cuts, and what to check before sourcing one.
15 min read
Natural Round Diamonds: A Buying Guide
Natural round diamond grading, cut-grade specifics, pricing vs. lab-grown round, and certification — a sourcing guide for trade buyers.
15 min read
Nature-Inspired Diamond Rings: Trade Guide
A jeweler's guide to sourcing nature-inspired diamond rings at wholesale — motifs, diamond shapes, settings, and metal choices.
15 min read
What Is the New York Diamond Exchange?
What the New York Diamond Dealers Club and the city's diamond exchange buildings actually do, how membership works, and what it means for buyers.
15 min read
OEM Jewelry Manufacturers Explained
What an OEM jewelry manufacturer actually does, how OEM differs from private label and custom, and how to evaluate a wholesale OEM partner.
16 min read
Old Single Cut Diamond Guide
What an old single cut (8-cut) diamond is, its 16-18 facet structure, how it differs from full-cut melee, and buying and sourcing considerations.
15 min read
Orapa Diamond Mine: What Buyers Should Know
How Botswana's Orapa diamond mine operates, its scale and output, and what it means for wholesale natural diamond sourcing.
16 min read
Padparadscha Diamond Guide
What a padparadscha diamond is, why it's a trade nickname rather than an official grading term, and how it compares to formally graded pink and orange.