18 min read
How Are Engagement Rings Made?
How are engagement rings made? The process explained — from CAD design and casting to stone setting, polishing, and certification.
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
How Are Lab-Grown Diamonds Certified?
Yes, lab-grown diamonds can be certified. Here's how the 4Cs grading process works, which labs certify them, and what's on the report.
15 min read
How Diamonds Are Mined
How natural diamonds are actually mined — from kimberlite pipes to marine and alluvial recovery — and how that process compares to lab-grown CVD.
15 min read
How to Find a Jewelry Manufacturer
Where to actually find jewelry manufacturers to evaluate: trade shows, directories, referrals, and sourcing platforms — before you start vetting.
16 min read
How to Spot a Fake Diamond
Practical ways to tell a real diamond from a simulant or synthetic look-alike, what home tests actually prove, and when to get professional verification.
15 min read
I1 Clarity Diamonds: A Trade Guide
What I1 clarity actually means, when it's a viable sourcing tier for wholesale buyers, and how to evaluate I1 stones before adding them to inventory.
16 min read
IJO Buying Group: A Wholesaler's Primer
What IJO (Independent Jewelers Organization) is, how its member-owned buying-group model works, and what it means for wholesale diamond suppliers.
16 min read
What Is an Illusion Setting Ring?
What an illusion setting is, how the engraved metal plate works, its history, and how it differs from a true halo setting.
17 min read
Inhorgenta Munich: A US Buyer's Guide
What Inhorgenta Munich is, how it compares to JCK Las Vegas, and what US trade buyers should plan for before attending the Munich show.