Gem Info by Region
Afghanistan, Ancient Eurasian Gemstone Source
Afghanistan is a source for gems, particularly lapis lazuli from Badakhshan, emerald from the Panjshir Valley and ruby from Jegdalek
Africa Gems - Mining in Malawi
Some gems are mined from Malawi, one of the poorest countries in Africa surrounded by important gemstone sources
African Tsavorite Garnet
Tsavorite is a rare vivid green grossularite garnet, colored by chromium or vanadium, with deposits mainly in East Africa.
Amazonite is a gemstone variety of green microcline. It is named after the Amazon River in Brazil, though surprisingly no deposits have been found there.
Amber from the Baltic
Amber is the fossilized hardened resin of the pine tree, formed about 50 million years ago.
The USA produces gemstones ranging from tourmaline and turquoise to peridot, sapphire, sunstone, opals and rock crystal
Amethyst is found all over the world, but South America is the most abundant source.
Ametrine from Bolivia
Natural ametrine comes almost entirely from one location, the Anahi mine in Bolivia. New cutting styles are making this unique gem even more popular.
Australian Boulder Opal
Boulder opal has become the second most valued opal, after the famous black opal
Read about Australia as the leading source for opal and also about other gemstones that are mined in Australia, such as diamond, sapphire, amethyst, rhodonite, ti...
Brilliant Brazilian Gems
Brazil is an important gem source, particularly Minas Gerais, Paraiba and Bahia, where citrine, amethyst, topaz, aquamarine, Paraiba tourmaline and emerald are mined
Benitoite is a very rare blue gemstone that has been designated that official state gem of California
Cambodian Gem Mountains
Cambodia is known for blue sapphire, mined from Pailin on the Thai-Cambodian border, but other gemstones, such as blue zircon are mined there
Chinese Gems and Jewelry
China has a huge jewelry and gemstone market and several gemstone materials are producted there, such as cultured pearls, amber, turquoise, corundum and peridot
Crystal Caves of Australia
The Crystal Caves of Atherton in Queensland Australia are a wonderful tourist attraction with an amazing collection of gems, including the Empress of Uruguay Amet...
Desert Gemstones and Minerals
Gemstone deposits are found all over the world, even in inhospitable places such as deserts. Learn about desert gemstones found in deserts in America, Asia and Af...
Digging for Diamonds in the USA
The Arkansas Crater of Diamond State Park allows visitors to pay a small entrance fee and dig for diamonds. The park allows any diamond gems found to be taken home
Discovery of Tanzanite
Tanzanite was first discovered in Tanzania by either a Masai tribesman called Ali Juuyawatu, Ndugu Jumanne Ngoma or in 1967 by Manuel de Souza, a Goanese tailor k...
Emeralds Around the World
Emeralds are not only from Colombia. They come from many places in the world, including East Africa and Brazil.
Emeralds from Zambia
Emeralds from Zambia now rival Colombian emeralds in the international gemstone market.
Famous Gems and Jewelry of Sri Lanka
Sri Lanka, formerly known as Ceylon, has produced some of the most beautiful and valuable gemstones and jewelry in the world, including the Blue Belle of Asia Sap...
Gem Mining in Tanzania
East Africa has some of the richest deposits of colored gemstones in the world, and Tanzania is the top producer
Gemstones from Afghanistan
Afghanistan is most famous for lapis lazuli, but is also an important source for kunzite, tourmaline and emerald.
Gemstones from Africa
Africa has become one of the largest producers of colored gemstones, including fine sapphire, tourmaline and garnet.
Gemstones from Botswana
Botswana is one of the most stable African countries and an important source of diamond and other precious materials
Gemstones from Myanmar
Burma, Myanmar, is famous for some of the world's most valuable and beautiful gemstones, such as rubies, sapphires and imperial jade, others include spinel and pe...
Gemstones from Pakistan
Pakistan has enormous mineral wealth and may some day become a major force in the international gems trade.
Gemstones from Russia
Russia is an important producer of diamonds, alexandrite, demantoid garnet and emerald, as well as many lesser gemstones
Gemstones in the UK
The UK, including Britain, England, Scotland, Northern Ireland and Wales has seen some mineral and gemstone finds, such as diamond, sapphire and Blue John fluorite
Hetian Jade Jewelry and Carvings
Jade is one of the most treasured gemstone jewelry materials in Asia, and one of the most important sources of jade is Hotan, or Hetian in Xinjiang Province of China
Indonesia has long been a source for gemstones, including diamonds, jasper, quartz, obsidian, pearls, amber and more. Learn more about Indonesian gems and history
International Gemstone Market in Chanthabur...
Take a tour of the famous international gemstone market in Chanthaburi, Thailand. There are great deals in natural ruby, sapphire and other popular colored gemsto...
The most famous sapphires in the world are from Kashmir. They are so rare you will probably never see one except in a museum.
Malachite from Africa
Malachite is a fascinating copper-bearing mineral with bands of bright and dark green.
Mexican Fire Opal
Fire opal is unique in the opal family because high grade material is transparent enough to be cut in facets.
Mining Sapphire in Australia
Australia is most famous for opal, but sapphire from Queensland is important in the world market.
The success of Mozambique tourmaline is tied to the discovery of copper-bearing stones in the Shalawa region.
Red Hot Rubies in Ice Cold Greenland
We have all heard of 'Ice Cold Gold', but what about red hot rubies? Astounding finds have been made under the icy earth of Greenland
Sapphire and Ruby Gemstone Mining in Madaga...
Madagascar has some of the richest gemstone resources in the world, especially in sapphire and ruby gems. Madagascar is also a source for tourmaline, aquamarine, ...
Sapphires from the Golden Triangle
The Golden Triangle, where Thailand, Burma and Laos meet is known for opium more than gems, but there are stones in the area
Sierra Leone's Diamonds
Sierra Leone's mineral deposits include diamond, titanium, gold, bauxite and rutile. Diamond mining in Sierra Leone goes back to before the civil war
Sources for Fine Ruby Gems
Fine ruby gemstones are only found in a few locations of the world; such as, Burma, Thailand, and Madagascar. Each location provides rubies with different charact...
Sources for Fine Sapphire Gemstones
Fine sapphires are found in only a few locations in the world: principally Burma, Kashmir, Sri Lanka, Madagascar and Thailand.
Sri Lanka Sapphires
Ceylon (Sri Lankan) sapphires are justly famed for their bright blue color. Sri Lanka also produces yellow, pink, orange and green sapphire
Sri Lanka's Gem and Jewelry History
Sri Lanka (formerly Ceylon) is one of the most important places in the world with regard to gems and jewelry, Ceylon is a rich source for gemstones with a long hi...
Thai Rubies in Trat
Rubies from Mogok in Burma are famous, but the small town of Bo Rai in Trat, Thailand is not so well-known for rubies
Tourmaline in America
The USA is not especially famous for its gemstones. But tourmaline is an exception.
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Gems are always measured in Millimeter (mm)
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Note: 1ct = 0.2g