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Coober Pedy, in the South Australian outback, is the world's largest opal mining area.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoi sold one for a hundred bucks!
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What is the Texture of an Opal Mineral?
smooth
Is opal a element or a compound?
SiO2 .nH2O
Is synthetic opal a mineral?
No. As it is synthetic it is man-made. A mineral must be naturally occurring and have a crystalline structure (among other requirements). Synthetic opal does not meet these criteria.
Is an opal a type of rock?
No, it's a type of silica, and is classed as a mineraloid.
What is an example of a blue mineral?
The most blue crystals I know of are, Copper sulphate crystals, topaz, and sapphire
What gemstones is more expensive than Opal?
Fire opal:)
Did opal ever finds her mother?
no
What states in the US are opal found in?
Opal is most commonly found in Idaho.
What is the most valueable opal?
the best opal can be more valuable than the best rarest black diamond
Are there different kinds of opal?
The types of Opal that i am familiar with are White Opal, Fire Opal, Boulder Opal, Black Opal, Crystal Opal, Light Opal, Doublet Opal, Triplet Opal, Common Opal, Synthetic Opal, and Immitation Opal.
How much does Australian opal cost by the gram?
It varies hugely with the type and quality of opal. In general the black opal (lights against a dark background) is more expensive than milky opal (lights against a creamy background). But opals are very individual, and prices depend on the appeal of a particular stone as presented, or a cutter's eye for its potential.
Where are opals made?
Australian Opal are dug and cut both on the opal fields and in the city's. they are found in New South Wales (NSW) - The Home of Black Opal New South Wales produces most of the Opal of Australia. Lightning Ridge opal is the darkest and most valuable form of opal. White Cliffs, produces white or crystal opal in the form of 'seam White Cliffs is also noted for the production of 'opal pineapples' Queensland produces boulder opal, these occur in deposits in weathered sedimentary Cretaceous rocks in the west of the state Quilpie, Queensland the largest producer of boulder opal in the world Winton, Queensland Opalton, Queensland Yowah, Queensland home of the opal refered to as Yowah Nut, South Australia - The White Opal Fields South Australia has 4 working opal fields, Andamooka, Coober Pedy, Lambina and Mintabie. South Australia produces the largest amount of opal and this is known as milky opal. Coober Pedy produces most the world's white opal. Andamooka, South Australia Mintabie, South Australia Lambina, South Australia
What town and country is know as the opal capital of the world?
The unmodified opal is a common mineral located worldwide. The most important deposit locations for opal minerals are: Australia, and Mexico. However, Australia remains the richest in said mineral, having more than 3/4th of the world's common opal.
If my date is wearing an opal bracelet and says it is her zodiac stone then what is her sign?
You're date is most likely a scorpio. Scorpio's main gemstone is Topaz, but others include Opal, Beryl, Amethyst, Aquamarine, and Tourmaline. Opal is most common of them.
How many opal types are there?
There are 5 basic types of opal. These types are Peruvian Opal, Fire Opal, Girasol Opal, Common opal and Precious Opal.
How big is the biggest opal?
The Olympic Australis Opal is believed to be the largest gem opal ever found, and it was found at Coober Pedy.Found in 1956 at the "Eight Mile" opal field in Coober Pedy, South Australia, the Olympic Australis Opal was found at a depth of 30 feet and so named because the Olympic Games were being held in Melbourne at the time.The Olympic Australis consists of 99% gem opal, with the remainder of 1% being the soil still attached to the stone. It weighs 17,000 carats (3450 grams) and is 280 mm long (11 inches) by 120 mm, by 115 mm. It was valued at AUD$2,500,000 in 2005.
Is opal valuable?
Ther is no set answer to this question. Each opal is unique and has its own value. From colorless opal to the most prized fire opal it depends on the size and color. A good place to get the idea of the value of opal is to go to ebay and type in opals. You will see prices from a few dollars to over 50,000 dollars.
