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IN OMG! ON 29 Jun, 2015
Earth contains a massive amount of incredible substances and gemstones occupy a significant space on this. A gemstone is a precious mineral, which is mostly used for jewelry and adornment purposes. Gemstones are valued high due to the rarity.
A human being is familiar with these worthy elements since ancient times. When we look back to the past, ancient Greeks also used precious and semi-precious stones for several purposes. The modern usage includes the wide variety of valuable stones like diamond, ruby, sapphire, emerald, etc.
The precious stones are classified into various categories, varieties, and species. Before using them as jewelry or anything, these stones undergo some process and refinement. Gems of many kinds are taken through certain treatment like heating, cutting, coloring, polishing, etc. to make ornaments. Some gems are used in their original form.
After Looking at these gemstones, you might feel that the Earth is blessed with priceless elements. Among numerous varieties of gem species, these are ranked top and are highly demanded.
Opal is a hydrated unstructured form of silica. Ethiopian Black Opal is a kind of Northern African opal that has been in human use since early 4000 BC. The gem was discovered in North Shewa Province. In 1994, the first published report of gem opal from Ethiopia came into appearance.
Opal falls under the category of Mineraloid. Opals are of different colors which are white, yellow, red, orange, green, brown, black and blue. Many of the opals are colorless as well. Opal is the national gemstone of Australia and the country accounts more than 95% of the precious opal supply in the world. The price of opal varies according to the types. But in general, 1.16 carat opal is priced 48.72 US dollars.
Apatite is usually green, blue, violet, pink, brown and transparent as well. The market price of 1.54 carat Apatite is 40.90 US dollars. They are relatively soft gemstones which were discovered earlier in Brazil and Mexico. Besides the ornamental use, apatite is often used for the agricultural purpose i.e. to make fertilizers.
Pietersite is considered as tempest stone. Sid Pieters discovered this gemstone in Namibia in 1962. They are quite beautiful which exhibit the amazing color combination like brown, gold, black, grey and blue. 25.12 carat Pietersite costs $100.48. They are also used for healing purposes and to energize mind and body.
The original color of Tanzanite is usually reddish brown, and when treated with heat, it appears in blue/violet color. This gemstone was discovered in 1967 in Northern Tanzania and Tiffany & Co. named it Tanzanite. The naturally formed Tanzanite is too rare. The 0.81 carat of Tanzanite costs $89.10.
An estimated two million carats of Tanzanite were mined in Tanzania from 1967 before the government nationalized the mines in 1971.
A Greek philosopher and naturalist Theophrastus discovered Agate around the river Achates between 4th and 3rd century BC. The stone is most commonly used in the art of hardstone carving and jewelry designs. The price of 57.71 carats of Dendritic Agate is 129.96 US dollars.
Benitoite is a rare mineral, and it is blue in color. George D Louderback firstly used the term Benitoite in 1907 after discovering it in San Benito County, California. In 1985, it became California's official state gem. The price of Benitoite is between $500.00 and $2000.00 per carat.
Amethyst is widely used in jewelry. It is taken as one of the most precious stones used for ornamental purpose. It comes in purple and violet. The best variety of amethyst is found at Brazil, Sri Lanka and Siberia. The price of Amethyst 11.1 x 8.4 mm. is $64.
Prehnite is popular as the healing crystal. They are rarely transparent and mostly translucent. This gemstone was discovered in 1788 in Eastern Cape Province, South Africa. It was named after Colonel Hendrik Von Prehn who was commander of the Dutch colony between 1768 to 1780. A rare orange Prehnite was discovered at Kalahari, South Africa in 2000. The price of 48.2 carat Prehnite is 121 dollars.
Turquoise is an opaque mineral and of blue/green color. It was first found in the 17th century. Mines in the southwest US are the significant sources of this mineral. The average price of Turquoise is $80.00 per carat. Besides the ornamental use, Turquoise tiles are mostly used in the monuments.
This was first discovered in 1834 near the Tokovaya River. Alexandrite is named after the Russian emperor Alexander II and it is taken as the young gemstone. The changing color of Alexandrite is its unique feature. The price of this remarkable gem varies. Natural Alexandrite up to one carat is valued 15,000 dollars.
Tourmaline is a semi-precious stone that comes in wide variety of colors. These gemstones were discovered initially in Sri Lanka, so Tourmalines are sometimes called Sri Lankan magnet. United States, Brazil, Africa, Afghanistan are other places where the mines of Tourmaline are found. The average price of Tourmaline per carat is 40 dollars.
Beryl is one of the most fascinating and famous minerals. It is found in several colors. Its red and green variety is considered as the most precious. Although, the pure Beryl is colorless, they are processed and treated to give a color touch for jewelry purpose. The market price of natural uncut red Beryl of 111.70 Ct is $19 while the big natural red Emerald crystal is of $229.
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