16 min read
Types of Halo Ring Settings, Compared
Single, double, hidden, and floating halo settings compared — how each works, what it looks like, and which suits which buyer.
Insights & Guides
The Guru Diam Blog
Expert articles on lab-grown diamonds, wholesale sourcing strategies, and the latest trends shaping the jewelry industry.
17 min read
Vicenzaoro: A US Buyer's Guide
What Vicenzaoro is, its January and September editions, and what US wholesale diamond and jewelry buyers should know before attending.
19 min read
Wedding Band Setting Types Compared
Compare wedding band setting types — channel, shared-prong, bezel, flush, pavé, and bar — for durability, resizing, and stacking wear.
15 min read
What Does LGD Mean on a Diamond?
What LGD stands for, how the abbreviation is used on certificates and hallmark stamps, and how it differs from natural diamond terminology.
17 min read
What Is a Carat in a Diamond?
Carats in diamonds explained: what a carat means, points vs. carats, why pricing jumps near whole-carat marks, and how carat fits the 4Cs.
16 min read
What Is a CVD Diamond?
What a CVD diamond is, how chemical vapor deposition grows real diamond in a lab, and how CVD differs from HPHT and natural diamonds.
17 min read
What Is a Prong Setting?
What a prong setting is, how 4-prong vs. 6-prong mountings work, and how prong setting compares to bezel, channel, and pavé settings.
16 min read
What Is a Bezel Setting? A Full Guide
What a bezel setting is, how it protects a diamond, its cost and durability tradeoffs, and which shapes and lifestyles it suits best.
15 min read
What Is a Diamond Culet?
What a diamond's culet is, how culet size is graded, why it matters for antique cuts, and what buyers should check on a grading report.