Chrysoprase (Chalcedony) ovaali 6mm
Krysopraasi / Chrysoprase
Alkuperä (todennäköinen) : Afrikka
Paino ( ct noin ) : 0,5
Mitat ( mm noin ) : 6 x 4 x 3
Hionta : cabochon
Puhtaus :TL
Erinomainen Erittäin hyvä Hyvä ”kakkosluokkaa”
Hionta X
Loisto X
Väri X
Ominaista :läpinäkyvä vihreän omenan värinen Krysopraasi jalokivi
on vakiokoko, voi tilata parin tai useammankin
hakusanoja: krysopraasi,chrysoprase,jalokivi,jalokivet,vihreä,ovaali
There are two prominent subspecies of quartz, crystalline and cryptocrystalline. The fine grained cryptocrystalline varieties are usually known collectively as chalcedony. The most prized of all the chalcedonies, chrysoprase, is the fine grained fibrous apple green variety. It owes its lovely color to the presence of hydrated nickel silicate. It is usually either cut as cabochons or as beads and carvings. |
| Known Facts | |
| Refractive Index: | 1.544 - 1.553 |
| Chemical Composition: | SIO2 |
| Hardness: | 7 |
| Density: | 2.65 - 2.66 |
| Crystal Group: | Hexagonal |
| Ocurrence: | Australia, Tanzania
|
