15 min read
4 Carat Natural Diamond Guide
What to know about 4 carat natural diamonds: pricing drivers, shape and size, certification, and how they compare to lab-grown at the same weight.
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
4mm Round Diamond Carat Weight Guide
What carat weight is a 4mm round diamond? A trade reference guide to mm-to-carat sizing, cut proportions, and sourcing accent stones.
15 min read
Screw Back Diamond Earrings: Wholesale Guide
Screw-back diamond earrings use a threaded post and a disc-shaped nut that screws onto it, rather than a friction-fit clutch, to hold the earring...
15 min read
4 Carat Lab Grown Diamond Guide
A 4 carat lab-grown diamond is a substantial center stone — roughly 10.1mm in diameter for a well-proportioned round brilliant, large enough to...
16 min read
How to Read a Diamond Grading Chart
A diamond grading chart is a reference scale — issued by a gemological lab like GIA, IGI, or GCAL — that translates a stone's cut, color, clarity,...
16 min read
Men's Diamond Earrings: Sourcing Guide
Men's diamond earrings are, from a sourcing standpoint, defined less by a distinct product type than by a distinct set of buyer preferences.
16 min read
Loose Lab-Grown Diamonds: Buying Guide
A loose lab-grown diamond is a lab-created (CVD) diamond that has been fully cut and polished but not yet set into a piece of jewelry.
15 min read
GIA Certified Lab-Grown Diamonds
Yes, GIA certifies lab-grown diamonds — it has since 2007, using the same 4Cs grading criteria (carat, cut, color, clarity) applied to natural...
16 min read
Right-Hand Diamond Rings: Trade Guide
A right-hand ring is a diamond ring designed to be worn on the right hand rather than the left, freeing it from the symbolic conventions of an engagement or wedding ring.