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Exceptional Colombian Treasure: Color Changing 1.90 Andesine Feldspar
- Artikelnummer
- 1000BCT
- Abmessungen (mm)
- 9 x 7 x 5mm
- Gewicht (cts)
- 1.9
- Treatment
- No Treatment
- Shape
- Fancy
- Type
- Faceted
- Clarity
- VVS
- Farben
-
Andesine is a silicate mineral, a member of the plagioclase feldspar solid solution series. Its chemical formula is (Ca, Na)(Al, Si)4O8, where Ca/(Ca + Na) (% anorthite) is between 30 and 50%. The formula may be written as Na0.7-0.5Ca0.3-0.5Al1.3-1.5Si2.7-2.5O8.[2]
The plagioclase feldspars are a continuous solid solution series and as such the accurate identification of individual members requires detailed optical study, chemical analysis or density measurements. Refractive indices and specific gravity increase directly with calcium content.[5]
It is sometimes used as a gemstone.[6]
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- Artikelnummer
- 1000BCT
- Abmessungen (mm)
- 9 x 7 x 5 mm
- Gewicht (cts)
- 1.9
- Treatment
- No Treatment
- Shape
- Fancy
- Type
- Faceted
- Clarity
- VVS
- Farben
-
Andesine is a silicate mineral, a member of the plagioclase feldspar solid solution series. Its chemical formula is (Ca, Na)(Al, Si)4O8, where Ca/(Ca + Na) (% anorthite) is between 30 and 50%. The formula may be written as Na0.7-0.5Ca0.3-0.5Al1.3-1.5Si2.7-2.5O8.[2]
The plagioclase feldspars are a continuous solid solution series and as such the accurate identification of individual members requires detailed optical study, chemical analysis or density measurements. Refractive indices and specific gravity increase directly with calcium content.[5]
It is sometimes used as a gemstone.[6]
| Versandanbieter | Versand nach Pakistan | Versand in den Rest der Welt | Kombiversand ( Pakistan ) | Kombiversand (Rest der Welt) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| FedEx |
|
|
|
|
| DHL |
|
|
|
|
| UPS |
|
|
|
|
Welcome to the City Of Gems-Chanthaburi !! The City Of Gems-Chonburi has been operating from Chanth....
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Positiv
Nice stone nice store highly recommended 10/10
