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I like the pun...if that was your intention. Opal rough (rock before it's cut) tends to be on the softer side than the other precious gemstones (ruby, sapphire, emerald). It has a hardness between 5.5-6.5 on the mohs scale. So opals when constantly worn could become scratched and needs to be repolished time to time
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∙ 9y ago
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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 is 1kg of black opal on market?
Black opal can be very expensive, only low grade black opal is sold by kilo weight. This low grade is called potch and colour which means that maybe bit of colour might be in this rough black opal I have seen parcels sold for $200 per kilo but it has no colour. Good kilo bucket of rough black opal would cost around $5,000 .00 Black opal is rated by body tone N1 for deep black colour, and N4 for light black colour. So for $5000 per kilo, dont expect N1 body tone. Black opal is sold by carat, and rare patterns are worth $5,000 to $20,000 per carat; especially red fire harlequin pattern n1 body tone, and over brighness rating of 4.
What is the difference between an Australian opal and an Ethiopian opal?
An Ethiopian opal is an opal-CT, whereas an Australian opal is an opal-A. The Ethiopian opal is made up of leptospheres, instead of small amorphous silica spheres like the Australian opal.
What is boulder opal?
Boulder opal is distinct from black opal in the following ways: * Boulder opal is usually mined in open-cut operations while black opal is mined in shafts. * Boulder opal is found in ironstone boulders, while black opal is found in seams.
What is the birthstone for October?
October's birthstone is the opal. The opal is thought to have the power to predict illness. This is because the opal responds to heat.
If you had a kapok shirt would it be soft or rough?
rough
What is something not soft called?
Rough or hard is not soft.
Is the lion's skin soft or rough?
They are soft-skinned.
Is californium rough or soft?
Californium is a soft metal.
Is Maize plant leaf is soft or rough?
Yes it is rough
Are horses mane soft?
they are rough but smooth
Do lions have rough manes or soft manes?
There skin is thick. The fur is USUALLY soft but thick. so there soft.
What are facts about opal?
They are a soft stone and crack very easy. There are different colors and are only found in Australia.
How can you tell an rough er from a smooth er?
A rough er has ribosomes while a soft er does not
What is the sense that tells if something is rough or soft?
touch
What are the 2 types of?
Soft-rough-smooth-hard
What are the 2 types?
Soft-rough-smooth-hard
