Some diamonds can be considered opaque, because they are seriously flawed. These are then sent to industry as industrial diamonds: the use for 75% of all diamonds mined.
A diamond gemstone is clear with small inclusions, not opaque.
Then, your diamond looks opaque white under a black light.
"opaque"
Opaque
Opaque
if you mean opaque, it is a translucent colour that you cannot really see through, as an example a pearl would be opaque
Gem-quality diamonds can be said to be transparent to translucent in rough crystals. Industrial diamonds are cloudy -- intensely flawed -- and may be opaque, but are not considered transparent.
Then, your diamond looks opaque white under a black light.
It depends on what form its in. Most forms of carbon are opaque. Diamond, however, is transparent.
Raw diamonds can be transparent, translucent or opaque, depending on their clarity. Gem-quality diamonds are transparent.
'Good' is a judgement call, and you are the judge.
Boart means industrial quality diamond (by nature heavlily included, near opaque), carbonado is the variety. Almost any boart can be heated to make black. There are 3 types of black diamonds, 1)Natural Black (opaque but slightly traslucent) 2)Irradiated (white, transparent, cloudy diamond, I1 to I3 clarity), can be transformed to black (opaque, slightly translucent, green traces when viewed with strong light) and finally 3)Boart diamond (60% of the diamond production). Entire diamond appear black (brownish to acerated hues), completely opaque, zero light can enter to it. From price point of view. Natural Black from 500 per carat, Irradiated Black from 150 per carat, boart heated to black from 50 per carat, so watch carefully what you`re buying.
Carbonado, a form of opaque or dark-colored diamond used for drills.
No, thick wall is not translucent. It is opaque in nature.
Metallic crystals absorb light in the visible spectra, diamond crystal do not.
Covalent crystals are not necessarily opaque. Think of diamond, pure quartz crystals, pure aluminium oxide crystals these all are colorless and transparent.
Not all crystalline materials are opaque, for instance diamond and many others. Some crystalline materials are opaque, it's because they absorb white light, which causes a gap (from IR up to UV) in the transmission spectra.
Diamond is the allotrope carbon of where the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. Diamond is an optically isotropic crystal that is transparent to opaque to cloudy, depending on the quality of the diamond.