Learn
Read the stone before you buy it
Color is only part of what makes a gem distinctive. Cut, carat, shape, origin, and treatment all shape its value, so start with the 4Cs and the questions that matter most.
Our Gemstone Buying Guide walks through how to read a certificate, compare stones fairly, and recognize what each detail tells you about the gem in front of you.
Reference guides
Authenticity, birthstones, and care
Three focused guides on how gems are treated, how traditions assign them, and how to keep them clean and undamaged.
Authenticity
Treatments and Authenticity
Learn the difference between unheated natural stones and gems that have received traditional heat treatment, and how each is disclosed on a certificate.
Tradition
Birthstone Guide
A practical overview of birthstone traditions by month, with notes on the gemstone types most commonly associated with each.
Maintenance
Care and Cleaning
Gentle cleaning methods, storage advice, and the stone types that need extra caution, so your gems keep their polish over time.
Continue reading
Gem Encyclopedia and the Blog
The Gem Encyclopedia is a reference index of gemstone types, with properties, color ranges, and typical treatments for each. Our Blog adds longer articles on sourcing, grading, and gem care.
Start with the encyclopedia when you want a specific stone explained, or read the Blog for background on the stories and decisions behind our range.