Precious Gemstones

The Definitive Gemstone Encyclopedia — 500+ Gems, 10 Scientific & Spiritual Dimensions

25 gemstones in Precious Gemstones

Diamond

Mohs 10 · Colorless, yellow, brown, blue

Ruby

Mohs 9 · Red, pinkish-red, purplish-red

Sapphire

Mohs 9 · Blue, cornflower blue, and all

Emerald

Mohs -0.5 · Green, bluish-green, yellowish

Alexandrite

Mohs 8.5 · Green in daylight, red in inca

Colombian Emerald (National Gem)

Mohs 7.5 · Green

Burmese Ruby (National Gem)

Mohs 9.0 · Red

Ceylon Sapphire (National Gem)

Mohs 9.0 · Blue

Russian Alexandrite (National Gem)

Mohs 8.5 · Green to red

Yellow Sapphire

Mohs 9.0 · Yellow, golden

Pink Sapphire

Mohs 9.0 · Pink, hot pink

Purple Sapphire

Mohs 9.0 · Purple, violet

Green Sapphire

Mohs 9.0 · Green, teal

Padparadscha Sapphire

Mohs 9.0 · Pink-orange, sunset

White Sapphire

Mohs 9.0 · Colorless

Orange Sapphire

Mohs 9.0 · Orange, mandarin

Color-Change Sapphire

Mohs 9.0 · Blue to purple

Pigeon Blood Ruby

Mohs 9.0 · Vivid red with blue undertone

Royal Blue Sapphire

Mohs 9.0 · Deep velvety blue

Cornflower Blue Sapphire

Mohs 9.0 · Medium cornflower blue, velvet

Ceylon Padparadscha

Mohs 9.0 · Pink-orange, lotus blossom

Trapiche Emerald

Mohs 7.5 · Green with black 6-spoke patte

Trapiche Ruby

Mohs 9.0 · Red with black 6-spoke pattern

Trapiche Sapphire

Mohs 9.0 · Blue with black 6-spoke patter

Chameleon Diamond

Mohs 10.0 · Grey-green to yellow (thermoch