Carnegie Research: Every Diamond
A diamond’s age – and what it tells us about the earth’s history – is a powerful story.
Tells a Story
Diamonds are among nature’s most precious and beautiful creations.Learn More
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.Learn More
The essence of purple, amethyst is beautiful enough for crown jewels, affordable enough for class rings.Learn More
The name “sapphire” can also apply to any corundum that’s not ruby red, another corundum variety.Learn More
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.Learn More