Resource center
Read: 6 min
How to care for soft & porous gemstones
The delicate shimmer and unique beauty of soft gemstones, like opals, turquoise and pearls, can add incredible personality to any jewelry collection. But unlike harder stones…
Read: 5 min
How durable are sapphires?
How durable are sapphires? Learn about sapphire hardness and how it ranks on the Mohs hardness scale here!
Read: 7 min
What is serpentine jewelry?
Learn about serpentine jewelry, serpentine gemstone meanings and discover where this green gem is found and how it's used.
Read: 6 min
Precious vs. semi-precious gems: introducing the “fab four”
What are precious gems and how do they differ from semi-precious ones? Discover the difference here.
Read: 6 min
Black gemstones: 14 types with colorful meanings
From rare diamonds to common onyx, explore 14 black gemstones, their meanings, how they form and how to care for them.
Read: 7 min
Guide to gemstone certifications
Read this beginner's guide to gemstone certifications to see how getting one can help you buy, sell and get appraisals for your gems.