The Guru Diam Blog

Round vs Cushion Diamond: A Buyer's Guide

Round vs Marquise Diamond: A Buyer's Guide

Round vs Pear Diamond: Wholesale Guide

What Keeps Guru Diam's Certified Pricing Competitive

Wholesale Melee Pricing: Why It Runs Cheap or Expensive

Guru Diam vs Typical Jewelry Manufacturing Partners: A Pricing Comparison

GIA & IGI Certified Lab-Grown Diamonds: A Wholesale Sourcing Guide for Jewelers

What GIA and IGI certification actually covers for wholesale lab-grown diamonds, what's certified vs. what isn't, how to verify a report before you buy, and how to source certified inventory correctly.

B2B Diamond Marketplace: 5 Red Flags

Not all B2B diamond marketplaces are equal. Compare inventory ownership, live pricing, melee QC, and reorder speed — the 5 things that separate real platforms from resellers.

Lab-Grown Diamonds Wholesale NYC: Buyer's Sourcing Guide

How NYC jewelers and designers source wholesale lab-grown diamonds in the Diamond District, from inventory tiers to antique-cut sourcing.