I would like to discuss the types of gems that are available out there. There are different ways of determining types of gems. The most common way would be to differentiate between precious and semi precious gems. The big four which are diamond, ruby, emerald and sapphire are considered to be precious gems. All of the other types of gems would be considered to be semi precious gems. Unless they are considered to be organic. That would be a very general way to describe the types of gems out in there. There are also a way to classify types of gems based on the material the gem would be made of. On the website typesofgemstones.com they list categories of gems. Here is what they have listed on their website.
There are many different types of gemstones. Here are some categories of gemstones:
- Corundum: Corundums are gemstones like rubies and sapphires. The corundum is the second hardest type of gemstone. It is made of aluminum oxide and a variety of trace minerals. Due to its very tough nature, rough corundum is actually used as an abrasive element.
- Quartz: These gemstones include citrine, carnelian, onyx, and amethyst. Quartz is one of the world's most common types of minerals. Quartz comes in a multitude of colors. Though quartz is found fairly commonly in nature, it is still considered a gem because it is rare to find a large and unflawed quartz gem.
- Beryl: These gemstones include emeralds and aquamarines and are related to quartz. Beryl is made of berylium and aluminum, but has some other elements mixed in. It can be in its transparent form or be colored green, light blue, or even red or yellow.
- Diamonds: These stones are considered the most valuable in the world
- Chrysoberyl: This type includes both cat's eyes and alexandrite. It is the third hardest gemstone. It has a lot of berylium mixed with the base element of aluminum oxide. Chrystoberyls typically have a green to yellow shade that is known for appearing differently under different shades of lighting.
- Jade: Jade has recently been given its own category since under chemical analysis, scientists learned that jade is indeed different from beryl. Jade stones typically are made of calcium and magnesium elements.
- Feldspar: Feldspar is frequently found in earthquake faults and volcanic chains. Due to heat and pressure, the tectonic elements of a feldspar come together to form a red gemstone called feldspar.
- Organic gemstones: These types of gemstones occur in organic sources rather than mineral sources. For example, amber forms from tree sap that has been fossilized. Pearls are formed from oysters.
Read more: Types of Gems & Stones | eHow.com http://www.ehow.com/about_5366594_types-gems-stones.html#ixzz1aoFUhCp5
I have posted the above website address so that you can visit to learn more about their information and the examples that they have used. I hope that this has helped in regards to learning more about the types of gems and how they are categorized. I find that when I do blogs like this I learn new things and I hope that the people out there who read this blog find the information useful, helpful and enlightening. I like feeling that I am helping others to learn and understand more about the fascinating world of gems. If you would like to leave a comment or ask a question I would be more than happy to get back to you. I would love to hear from others letting me know how I am doing. I am having a blast writing this blog and learning from all of the valuable information out there on the web. Drop me a line and let me know how it is going. Until next time.
The rare gem lady.
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