Education
Gemology, in plain language
No buyer's guide fluff. Articles are written by our credentialed gemologists and cover what we actually tell clients when they pick up the phone — from origin premiums and treatment disclosure to how to read a GRS report.
April 18, 2026
Gemstone Glossary: Trade Terms A to Z
The vocabulary you'll meet on product pages and lab reports, explained in plain English.
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April 18, 2026
How to Buy on TopGems: The Full Walk-Through
From browse to delivery — reservations, KYC, payment methods, shipping, insurance, returns. Every step explained.
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April 18, 2026
Certification Explained: GIA, GRS, SSEF, Gübelin and the Rest
Which gem labs matter, what each specializes in, how to verify a report online, and why a certificate is worth the fee above 1 carat.
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April 18, 2026
The Diamond 4C Guide: Carat, Cut, Color, Clarity
The four axes that determine every diamond price. Plain-language grading, what moves the needle, and how to read a GIA or IGI report.
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April 18, 2026
Gemstone Guide: Ten Stones Every Collector Should Know
A working reference for the ten colored gemstones we carry most often — hardness, key origins, common treatments, and what to look for when buying.
Read article →April 15, 2026
Investment Gemstones: What Makes a Stone Valuable
Rarity, provenance, condition, market depth — the four pillars of gem investability. Case studies on Burmese rubies, Colombian emeralds, and Kashmir sapphires over the past decade.
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April 11, 2026
Understanding Gemstone Certifications: GIA vs GRS vs SSEF
A practical comparison of the three most authoritative laboratories in colored stone trading — what they test, how their reports differ, and when each matters for serious buyers.
Read article →April 06, 2026
How to Choose a Natural Sapphire: Expert Guide
From Kashmir cornflower to Ceylon royal blue — a gemologist's framework for evaluating origin, color, clarity, and heat treatment when selecting a sapphire for collection or investment.
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