Resource center
Read: 5 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, the…
Read: 6 min
Gemstones that change color: nature’s optical illusion
Explore rare gemstones that change color, learning what causes the effect and how to protect them.
Read: 7 min
What is palladium?
Learn what palladium is, how it’s used in jewelry and why it’s a durable, tarnish-resistant metal you’ll love.
Read: 4 min
How durable are sapphires?
How durable are sapphires? Learn about sapphire hardness and how it ranks on the Mohs hardness scale here!
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What is serpentine jewelry?
Learn about serpentine jewelry, serpentine gemstone meanings and discover where this green gem is found and how it's used.
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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.
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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.
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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.
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What is alexandrite?
What is alexandrite? Discover the origin and symbolism behind the rare, color-changing gem.
Read: 4 min
The amethyst color spectrum and symbolism
Explore the amethyst color spectrum from purple to green and see what makes this royal-colored crystal so intriguing!
Read: 6 min
What is a zircon gemstone? A brilliant option for your jewelry!
If you’ve always wondered what a zircon gemstone is, here’s your chance to see why people love this popular gem!
Read: 2 min
October's birthstones: opal & tourmaline
October's birthstones are fitting: Opal, valued for its “shifting play” of color, and tourmaline, which comes in a rainbow of colors and combinations.
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What is beryl? A colorful guide to the chameleon of gems!
What is beryl? Discover the gems made up of this chameleon-like mineral, such as morganite, emerald, aquamarine, and more!
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Your guide to understanding gem inclusions
How do gem inclusions form? Do inclusions impact a gem’s value? Find out these answers and more in this expert guide!
Read: 7 min
Exploring the spectrum of sapphire colors
Sapphires have a vast color range beyond just blue. Use this color guide to learn about 12 different sapphire shades.
Read: 7 min
Everything you need to know about opal colors
Learn about 11 different colors of opal and discover the reason some exhibit play-of-color and others do not.
Read: 6 min
The world’s rarest diamonds
What’s the rarest diamond in the world? Discover the rarest diamond colors, how they are made and where they come from.
Read: 1 min
August's birthstones: peridot and sardonyx
Discover August's birthstones, Peridot and Sardonyx. Explore their characteristics, cleaning and care, and uncover the meanings behind these stones.