Spharelite 5,2 mm / 0,75 ct round
$ 53.28
incl. 25.5 % VAT
Model number:
250007
Product identifier:
250007
Sphaleriitti / sphalerite
Alkuperä (todennäköinen) : Espanja
Paino ( ct noin ) : 0,75
Mitat ( mm noin ) : 5,2 x 5,2 x 3,4
Puhtaus :VVS
Erinomainen Erittäin hyvä Hyvä ”kakkosluokkaa”
Hionta X
Loisto X
Väri X
Ominaista : kirkas monisävyinen sphaleriitti, keltainen - oranssi - punainen
hakusanoja:sphaleriitti,spaleriiti,ovaali,keltainen,oranssi,espanja
| Common as an important ore of zinc, gem quality sphalerite is a rare collector stone. The mineral is usually nearly black in color but is occaisionally found in transparent pieces of an orange or yellowish brown hue. Clean pieces are extremely rare. |
| Known Facts | |
| Color Key: | Orange, yellow, brown, green |
| Refractive Index:: | 2.37 |
| Chemical Composition: | ZnS |
| Hardness: | 3.5-4 |
| Density: | 4.05 |
| Crystal Group: | Cubic |
| Ocurrence: | Spain, Mexico |
| With a dispersion three times higher than diamond, gem sphalerite is one of the brightest and most dispersive of all minerals. It has a hardness of 3.5 - 4 as well as 6 directions of perfect cleavage. Spahlerite is very difficult to polish and is too soft to be used in jewelry. | |
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