Gemology
The gemstones behind Tennis Club
The joy of knowing your gemstone
Tennis Club began with a love of colored gemstones, and many of our pieces are built around one. We created this guide to share what makes each gemstone remarkable: where it comes from, how its color forms, the stories it has gathered along the way and how to care for it.
A little gemology changes how you see a piece. Once you know why a spinel glows or why a tourmaline can shift from pink to green in a single crystal, you never look at it the same way again. Choose a gemstone below to begin.
Sapphire
About sapphireEvery color but red
Spinel
About spinelThe gem long mistaken for ruby
Emerald
About emeraldColor, clarity and everyday care
Tourmaline
About tourmalineThe widest range of color in one gem
Ruby
About rubyWhat makes a ruby read as red
Tanzanite
About tanzaniteFound in one place on earth
Turquoise
About turquoisePrized for thousands of years
Diamond
About diamondThe hardest natural material
Lab diamond
About lab diamondThe same crystal, grown above groundBuilt on a love of color
Many of our pieces start with the gemstone. We choose each one for its color and character, then design the piece around it, so the gemology on these pages is the same knowledge that goes into our bracelets and necklaces.
Need help choosing?
Ask us about sizing, custom lengths or a gift.
