Copyright 2020 Coffin Gems©

Gemstones  & Metals

Coffin Gem Colors
Coffin Gem Sizes

About Our Gems

We use genuine stone materials in our designs such as onyx, quartz, spinel, corundum, sapphire corundum and topaz. Some of these are heat-treated to bring out the vibrant colors that you see. Corundum is what mother nature made natural gems from! 

We only choose materials that have a Mohs scale hardness factor of 7.0 or better for beauty and durability. 


Our materials vary from batch to batch, depending on what is available in our quantities at the time of purchase. Rest assured that you will receive a high-quality stone that will sparkle for a lifetime of wear.  

About Our Metals 

All of our silver settings are made from USA-grade sterling silver (.925).  All of our gold settings are 10k gold.  


The web page link below should answer any further questions you have, as well as clear up a lot of misconceptions, regarding the regulations governing precious metals in the USA. Click the link below for more information:  

If you are near Houston, TX and would like to see our gemstone colors/sizes

or inquire about our metals used, please feel free to visit our location