Additional Gemstone Information

A list of Gemstone Birthstones And Astrology

Originally the Birthstones or gemstones were associated with a zodiac sign or the month of a individuals birth. Find out what your stone is and view the stones we have for sale

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A list of Precious and Semi Precious Gemstones and their Treatments

There are so many types of gemstones available today. We have created a comprehensive list of gemstones to guide you and help to find the perfect gemstone.

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Amethyst Spheres, Amethyst Geodes, Amethyst Crystals & An Amethyst Pond

Amethyst Spheres, Amethyst geodes, Amethyst Crystals and an Amethyst Pond. View our collection of amazing pieces exclusivly for sale at Gem Rock Auctions

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Australian Gemstones

Australian gemstones are unique to the country they come from. Australia used to be very active volcanically and most of the gems found were formed from these volcanoes.

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Australian Sapphires

Australian Sapphires are as unique as the country they come from. Deep blues, multi colored greens and yellows known as Parti colored as well as intense Yellow.

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Blue Spinel: The Rarest Of Them All

Blue Spinel is one of the rarest colors of Spinel available. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Briolettes: Special Cut Gemstones

Briolettes are a special type of gemstone cut that can be used in many applications. Learn more about this gemstone cut and browse the beautifully cut stones we have for sale.

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Cacoxenite Gemstone Information

Cacoxenite is a very rare gemstone. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Colored Diamonds

Colored Diamonds are among some of the rarest gemstone in the world. Did you know they come in almost any color? Green, Blue, Chocolate, Pink and even Red.

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Compare Quartz and Topaz

Quartz and Topaz are two of the most common minerals on the planet. They also look very similar. Let's look at some properties of them and compare Quartz and Topaz.

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Crystals On Death Hike Mountain Beside Machu Picchu

On top Waynapicchu looking down on Machu Picchu and images of gemstones i bought from local market, crystals, quartz and obsidian.

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Gem Rock Auctions has an extensive range of faceting rough available. Some of the stones may not be easy to find so we have created this collection of the most popular facet grade gemstone rough categories. for you.

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Fossil Fisheye Agate

Fossil Fisheye Agate is a form of Agate that has a beautiful pattern. The growth makes the stones look like it has a fisheye. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Gem Localities - Gemstones Found Around The World

Gemstones can be found throughout the world in different continents and regions. Learn about the different gem localities around the world and what types of gemstones they produce.

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Gemstone Skulls

Gemstone Skulls from natural untreated Gemstones are popular now through the whole world. Click to read about the history of these skulls.

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Gemstones and Minerals Mined in China

Gemstones mined in China include Peridot, Agate, Blood Stone, Amber, Cinnabar, Corundum, Sapphire, Zircon, Diamond, Garnet, Nephrite, Jade & Turquoise.

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Gemstones from Africa

Africa is producing most of the enthusiasm gemstones in the world. In fact, the population is quite largely in Africa that’s why most of the African gem traders are almost dynamic here.

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Gemstones From Thailand

Thailand is the land of so many gemstones. Most of which have been mined out now. Learn what it is like to source gemstones in Thailand.

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Imperial Topaz Mines of the Ouro Region in Brazil

Imperial Topaz is one of the rarest gemstones on earth. There is some concern that stones are being referrd to as Imperial color when they are not.

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Indonesian Agate Information

Indonesian Agate is a beautiful gemstone that comes in a very unique and beautiful pattern. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Investing In Gemstones

If you want to invest sensibly in gemstones, there are some basic tips that you need to know. Learn about these tips and how to invest in gemstones

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Jasper Gemstones

There are many types of Jasper gemstones on the market. Jasper basically means “spotted or dappled stone”. Browse the beautifully cut stones we have for sale.

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List Of Gemstones Found In Asia

Asia is a region of the planet that produces some of the most excepional gemstones. Ruby, Sapphire and Spinel all come from this region.

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List Of Gemstones Found In Russia

Russia is a vast country with immeasurable mineral and gemstone reserves. Russia has become s significant diamond miner and manufacturer.

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List Of Gemstones Found In South America

South America boasts a long history of gemstone production and arguably produces some of the finest gem specimens in the world.

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List Of Gemstones From Europe

Europe is not as prolific of a source for gems as some of the other continents such as Asia or South America but it does contribute some beautiful gemstones.

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Mahenge Spinel - The Stone That Changed Everything

Mahenge Spinel is the famous stone that changed the perception of Spinel forever. Learn more about this gem and view our beautifully cut stones for sale.

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Marcasite Mineral and Uses

Marcasite is a mineral that is closely related to Pyrite. It can be found as a flower looking inclusion on host rocks and it has a very unique appearance.

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Mineral Specimens

Mineral Specimens are a great way to study how crystals form in nature. Learn more about mineral specimens and browse the beautifully cut stones we have for sale.

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Montana Agate Gemstone

Montana Agate is an Agate that comes from the region of the Yellowstone river. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Moss Agate Gemstone

Moss Agate has inclusions that are comparable with trees, plants, and landscapes. It is unlike any other Agate you have ever seen. Learn more about the crystal meaning and browse the beautifully cut stones we have for sale.

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Palm Ivory - Save The Elephant

Palm Ivory looks just like the real thing, but it is made from trees. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Popular Minerals For Collectors

There are many minerals that collectors look for to add to their collection. This list is the most popular minerals that we have sold over the years.

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Quartz Gemstone with Mica Inclusions

Quartz with mica is a beautiful and unique gemstone with cool looking inclusions. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Quartz gemstone with Pyrite Inclusions

Quartz with pyrite is a beautiful and unique gemstone with cool looking inclusions. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Quartz Orange Gioaba Gemstone

Quartz Orange Giaoba is a beautiful and unique gemstone with cool looking inclusions. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Rainbow Solar Quartz Meanings And Uses

Solar Quartz is ordinary Agatized quartz that is cut from stalactites in pale gray colors with unique mossy inclusions. It is a durable and unique stone.

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Rare And Exotic Gemstones Of The World

There are many gemstones that collectors look for to add to their collection. This is a list of the rarest and most exotic gemstones known.

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Rough Diamonds And Raw Diamonds

Rough and Raw Diamonds can look amazing in their raw form. Learn more about this gemstone and browse the beautifully shaped crystals we have for sale.

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Rutile Inclusion In Gemstones

Rutile is a mineral that is often found as an inclusion inside other gemstones. It is a form of Titanium dioxide and has many uses in industry

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Sillimanite Cats Eye

Sillimanite Cats Eye is a rare type of stone that shows the chatoyancy effect. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Tanzanian Gem Show And Arusha Mine Tours

One of our sellers has recently returned from the Tanzanian Gem Show. He also had the experience of a tour of the Tanzanite mines and a Tsavorite mine.

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The Gemstone Channel

Watch, learn and enjoy videos that are all about gemstones. From educational information to advanced cutting instructions. A must see for all gemstone enthusiasts.

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The Rare And Majestic Trapiche Emerald

There is one type of Emerald that ever collector wishes they had in their collection. that is the Trapiche Emerald. With it's unique spoke pattern it really is a stand out gemstone.

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What Color Is Topaz?

Topaz is a mineral that is abundant in the earths crust and it can be found in a multitude of colors including blue, pink and even red

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What Is Tourmaline And How Does It Grow

We often get asked the question of what is Tourmaline and how is Tourmaline formed. It is one of the most versatile, abundant and colorful gemstones in the world.

14th Feb 2019
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White Topaz vs Diamond: Which one is better?

When it comes to buying jewelry, especially an engagement ring, one has to look at various factors rather than just the price and size. If you are looking for a transparent and clear gem, then there are other options to consider rather than just a Diamond

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Wyoming Agate

Wyoming Agate is a beautiful Agate found on the Wind River. It is also commonly called the Wind River Iris Agate. Learn more about this gemstone and browse the beautifully cut stones we have for sale.

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Zambian Emeralds: What You Need To Know

Columbian Emeralds have been the stars of the Emerald world for a long time. Now Zambian Emeralds are making a rise. Here is what you need to know about them.

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