Sphalerite Espanjasta multicolor kuvallisella aitoustodistuksella
Sphaleriitti / sphalerite
Mukana kuvallinen Multicolour laboratatorion aitous / laatutodistus 0e. Alkuperä (todennäköinen) : Espanja
Paino ( ct noin ) : 1,4
Mitat ( mm noin ) : 6,4 x 6 x 4
Puhtaus :VVS
Erinomainen Erittäin hyvä Hyvä ”kakkosluokkaa”
Hionta X
Loisto X
Väri X
Ominaista : kirkas monisävyinen sphaleriitti,bicolor, erikoisen hyvin loistava monivärinen
hakusanoja:sphaleriitti,spaleriitti,ovaali,keltainen,oranssi,espanja,aitoustodistus,laatutodistus
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. | |
