Gemstones: Facts, photos, and information for over 100 gems.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Colored Gemstone Pictures: Blue, Red, Green, Orange, Pink
Colored diamonds are diamonds that have a noticeable bodycolor when viewed in the face-up position. Gems with superb color can fetch extraordinary prices, often over $1 million per carat.
Mineral Properties, Photos, Uses and Descriptions - Geology.com
Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.
Pictures of Opal - Black, Fire, Boulder, Blue and Pink - Geology.com
Photos of opal from around the world. Guidance for people who want to buy opal, see different types of opal, understand their names, learn about synthetics and imitations.
Birthstones by Month: Chart and Photos - Geology.com
The accompanying photo shows some of the many different colors in which garnet can occur. Top row, from left to right: orange spessartite (Mozambique), yellow mali (Mali), green demantoid (Namibia). Middle row: green tsavorite (Tanzania), purple …
Blue Gemstones: Sapphire, Turquoise, Aquamarine and more
Blue Gemstones and Crystals: A wonderful collection of blue crystals and faceted blue gems. Image by Greg C Grace / Alamy Stock Photo. Top row, from left to right: a square-cut dark blue aquamarine gemstone; an oval-cut dark blue topaz gemstone; an octahedral cleavage specimen of blue fluorite; an oval cushion-cut light blue aquamarine gemstone.
Looking into the Mysteries of Gems with a Microscope
Gemologists use microscopic examination to grade gemstones, identify gemstones, separate natural gems from synthetics, determine the probable country of origin of gems, and learn about how gems have formed.
Idaho Gemstones - Garnet, Star Garnet, Opal and More!
A Diversity of Gems from Idaho. Idaho's nickname is "The Gem State." It has a long history of producing a variety of gem materials. The most important gems produced to date have been garnet and opal. Notable amounts of jade, topaz, zircon, …
Montana Gemstones: Sapphire, Agates, much more - Geology.com
Some of the cabochons in the photo above show interesting mossy inclusions. Others exhibit the orange-brown banding common in agates found in gravels of the Yellowstone River and its tributaries in the southeastern part of the state.
Spinel: Red and blue gems confused with ruby and sapphire
The bright reds and deep blues can be spectacular specimens. It is easy to understand how early gem traders confused spinel with ruby and sapphire for over 1000 years. Specimens and photos by Arkenstone / www.iRocks.com.