Emerald
Color, clarity and the character of natural inclusions.
Education
Learn the Language of Gemstones
Guides to understanding natural emeralds, rubies and sapphires — how they are valued, treated, certified and cared for.
Topics
Explore by Subject
Ruby
Understanding red corundum, from hue and saturation to treatment.
Sapphire
Blue and fancy sapphires, and what defines their quality.
Gemstone Basics
Color, clarity, cut and carat weight, explained simply.
Treatments
Natural and treated gemstones, and why disclosure matters.
Certification
How independent laboratory reports describe a gemstone.
Buying Guide
What to ask and look for when acquiring a fine gemstone.
Care Guide
Wearing, cleaning and storing colored gemstones.
Guides
Latest Guides
Our first guides are in preparation.
In the meantime, our team is always happy to answer questions about a particular gemstone.
Ask a questionLooking for a Particular Gemstone?
Tell us what you’re looking for and our team will help you source the right stone.