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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.

Table Cut Diamond: History & Buying Guide
17 min read

Table Cut Diamond: History & Buying Guide

Table cut diamonds explained: the flat-faceted Renaissance-era cut, how it differs from old mine and rose cuts, and what to know before buying one.

Is a Lab-Grown Diamond Real or Fake?
15 min read

Is a Lab-Grown Diamond Real or Fake?

Lab-grown diamonds are chemically and physically real diamonds, not fakes or simulants. Here's the science, certification standard, and how they differ from natural stones.

CAD Jewelry Design: How It Works
16 min read

CAD Jewelry Design: How It Works

How CAD jewelry design works — from sketch to 3D model to wax printing and casting — explained for jewelers and manufacturers sourcing custom builds.

Providence Jewelry District Guide
19 min read

Providence Jewelry District Guide

A history and sourcing guide to Providence's Jewelry District: its manufacturing legacy, what's there today, and how jewelers source diamonds.

Princess Cut vs. Round Cut Diamond Guide
16 min read

Princess Cut vs. Round Cut Diamond Guide

Princess cut vs. round cut diamonds compared: facet structure, durability, pricing, clarity needs, and wholesale sourcing for jewelers and retailers.