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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.

10K vs 14K Gold: Full Comparison
15 min read

10K vs 14K Gold: Full Comparison

10k vs 14k gold compared on purity, durability, color, price, and allergy risk — a practical sourcing guide for jewelers and buyers.

14K vs 18K Gold: Full Comparison
15 min read

14K vs 18K Gold: Full Comparison

14k vs 18k gold compared on purity, durability, color, cost, and allergy risk — a sourcing guide for jewelers and engagement ring buyers.

Yellow Gold vs White Gold Guide
15 min read

Yellow Gold vs White Gold Guide

Yellow gold vs white gold compared on composition, maintenance, durability, cost, and style — a sourcing guide for jewelers and buyers.

Rose Gold vs Yellow Gold Guide
15 min read

Rose Gold vs Yellow Gold Guide

Rose gold vs yellow gold compared on copper content, durability, color, allergy risk, and style trends — a sourcing guide for jewelers.

How to Clean Gold Jewelry at Home (Safely)
15 min read

How to Clean Gold Jewelry at Home (Safely)

A jeweler-grade guide to cleaning gold jewelry at home safely, by karat and gemstone, plus what to tell customers to avoid and when to refer them to a pro.

Surat Diamond Bourse Explained
15 min read

Surat Diamond Bourse Explained

What the Surat Diamond Bourse is, why it exists, and what it means for the global natural and lab-grown diamond cutting and trading supply chain.