An Introduction to Gemology
Learn what gemologists do in our introduction to gemology. Whether your interest is casual or professional, the world of gems will amaze you.
What is Gemstone Transparency?
Gemstone transparency describes how much light passes through a gem and how it scatters. Learn what causes a gem to be opaque, translucent, or transparent.…
Lex & Rosalino
– Professional gemology expertise. Master jeweler, Jewelrysmith, CraftJewelry, Cutting Gemstones – Jewelry work of any complexity.…
EPOS MASTERCRAFT-ART&JEWELLERY and :TYPYCAL JEWELLER”
ORIGINAL CRAFT JEWELLERY, GEMMOLOGY EXAMINATION, MINERALS, ART&CRAFT. “In the best traditions of the industry, our workshop focuses…
Cushion Cut Diamonds: A Complete Buying Guide
With elegant curves, cushion-cut diamonds have a classic, timeless style. Learn the pros and cons of cushions and how to find the best one for your…
Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected…
Pear Shape Diamond Guide: Unique & Stunning
Dreaming of a pear shaped diamond engagement ring? Learn the pros and cons and read our expert advice to find the perfect pear for your style and budget!…
Is a D Color Flawless Diamond Worth the Price?
A D color flawless diamond has the highest color and clarity grade — and the biggest price tag. Are these premium diamonds worth the extra money?…
Gemstone Certificates
Can you rely on gemstone certificates to reveal everything that can affect the value of pricey gems? Learn what to look for when you have a gem certified.…
IGS Become Member