15 min read
What Is a Diamond Girdle?
What a diamond girdle is, how its thickness is graded, why it affects durability and carat weight, and what buyers should check before purchase.
Insights & Guides
The Guru Diam Blog
Expert articles on lab-grown diamonds, wholesale sourcing strategies, and the latest trends shaping the jewelry industry.
16 min read
What Is a Halo Setting?
What a halo setting is, how it boosts a diamond's apparent size, its history, durability tradeoffs, and how to source one.
16 min read
What Is IGI Diamond Certification?
What an IGI diamond certification is, what it covers, how it differs from GIA and GCAL, and how to read and verify an IGI report.
15 min read
What Is Pavé Setting?
What pavé setting is, how it's made, the main pavé styles, durability tradeoffs, and how to source melee for a pavé build.
16 min read
Where Jewelers Buy Diamonds
Where do jewelers buy diamonds? A guide to wholesalers, bourses, trade shows, B2B marketplaces, buying groups, and auctions — and their tradeoffs.
15 min read
Finding a Wholesale Custom Jewelry Manufacturer
What to look for in a wholesale custom jewelry manufacturer: capabilities, turnaround, minimums, certification, and how to evaluate one before ordering.
19 min read
Wholesale Diamond Jewelry Guide
How wholesale diamond jewelry sourcing works: pricing, margins, natural vs. lab-grown, certification, private label, and what to look for in a supplier.
16 min read
Wholesale Diamonds in Houston: Sourcing Guide
How Houston-area jewelers source wholesale diamonds without a local trade district: national suppliers, certification, and shipping turnaround.
17 min read
Why Lab-Grown Diamonds Are Cheap
Why are lab-grown diamonds so cheap? The real supply, technology, and production-economics reasons prices fell — and why cheap doesn't mean lower quality.