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Rare Green Andesine Sunstone 2.50 ct Green Hue Color Untreated SKU-12
- Artikelnummer
- Abmessungen (mm)
- 8.960 x 8.920 x 5.870mm
- Gewicht (cts)
- 2.500
- Treatment
- No Treatment
- Shape
- Triangle
- Typ
- Faceted
- Farben
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Andesine occurs in various colors, from red and honey-red to orange, yellow, champagne, and green. The semi-precious gemstone often shows greenish hints and a faint metallic shiller (or labradorescence). Some are even color-changing, displaying different hues under different types of lighting.
All plagioclase feldspars are composed of albite (sodium aluminum silicate) and anorthite (calcium aluminum silicate) in varying compositions. Other plagioclase minerals include bytownite, moonstone, oligoclase, and spectrolite, among others.
Andesine has a ratio of 30 to 50 percent anorthite to 50 to 70 percent albite, so some mineralogists classify it as an albite variety.
In terms of habits, andesine rarely forms as crystals; when it does, they’re usually small. Andesine crystals often display Albite, Pericline, and Carlsbad twinning. Usually, andesine is found in granular or massive habits.
Here’s an overview of andesine’s mineral traits:
Chemical formula: (Na,Ca)[Al(Si,Al)Si2O8]
Mohs hardness: 6 to 6.5
Color: White, gray, green, yellow, red, orange, pink, champagne, golden
Crystal structure: Triclinic
Luster: Sub-vitreous or pearly
Transparency: Transparent to opaque
Refractive index: 1.56 to 1.57; Increases with higher calcium content
Density: 2.66 to 2.68; Increases with higher calcium content
Cleavage: Perfect on {001}, good/distinct on {010}
Fracture: Subconchoidal or irregular/uneven
Streak: White
Luminescence: Fluorescence (weak); Red, blue, pink, yellow, or yellowish-brown in SW-UV, violet in MW-UV, and yellowish-white, orange, or orange-red in LW-UV
Birefringence: 0.009
Pleochroism: None
Dispersion: Weak to none
Optical effects: Sometimes color-changing
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- Artikelnummer
- Abmessungen (mm)
- 8.960 x 8.920 x 5.870 mm
- Gewicht (cts)
- 2.500
- Treatment
- No Treatment
- Shape
- Triangle
- Typ
- Faceted
- Farben
-
Andesine occurs in various colors, from red and honey-red to orange, yellow, champagne, and green. The semi-precious gemstone often shows greenish hints and a faint metallic shiller (or labradorescence). Some are even color-changing, displaying different hues under different types of lighting.
All plagioclase feldspars are composed of albite (sodium aluminum silicate) and anorthite (calcium aluminum silicate) in varying compositions. Other plagioclase minerals include bytownite, moonstone, oligoclase, and spectrolite, among others.
Andesine has a ratio of 30 to 50 percent anorthite to 50 to 70 percent albite, so some mineralogists classify it as an albite variety.
In terms of habits, andesine rarely forms as crystals; when it does, they’re usually small. Andesine crystals often display Albite, Pericline, and Carlsbad twinning. Usually, andesine is found in granular or massive habits.
Here’s an overview of andesine’s mineral traits:
Chemical formula: (Na,Ca)[Al(Si,Al)Si2O8]
Mohs hardness: 6 to 6.5
Color: White, gray, green, yellow, red, orange, pink, champagne, golden
Crystal structure: Triclinic
Luster: Sub-vitreous or pearly
Transparency: Transparent to opaque
Refractive index: 1.56 to 1.57; Increases with higher calcium content
Density: 2.66 to 2.68; Increases with higher calcium content
Cleavage: Perfect on {001}, good/distinct on {010}
Fracture: Subconchoidal or irregular/uneven
Streak: White
Luminescence: Fluorescence (weak); Red, blue, pink, yellow, or yellowish-brown in SW-UV, violet in MW-UV, and yellowish-white, orange, or orange-red in LW-UV
Birefringence: 0.009
Pleochroism: None
Dispersion: Weak to none
Optical effects: Sometimes color-changing
Feel free to to “make an offer” on our other items :)
We Accept Payment through
Paypal
Direct Deposit
Credit Cards
Versandanbieter | Versand nach Thailand | Versand in den Rest der Welt |
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FedEx | $35.00 / 2 | $35.00 / 5 |
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FedEx erhält Rabatt auf $35.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
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Express Shipping | $55.00 / 2 | $55.00 / 7 |
Thailand
Express Shipping erhält Rabatt auf $55.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
Express Shipping erhält Rabatt auf $55.00 bei Bestellungen mit 2 oder mehr Artikeln
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Registered Shipping | $10.00 / 7 | $10.00 / 21 |
Thailand
Registered Shipping erhält Rabatt auf $10.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
Registered Shipping erhält Rabatt auf $10.00 bei Bestellungen mit 2 oder mehr Artikeln
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Positiv
Beautiful stone and fast shipping!
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Positiv
Gem arrived quickly and description was perfect.
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Comments
The Verified Seller has provided accurate and honest pictures and details for this listing. Gem Rock Auctions is committed to holding our sellers to the highest standards of integrity and transparency. As part of this policy, we only permit the sale of natural, earth mined, gemstones. Many Gemstones have received treatments to enhance their color or clarity to further emphasize their beauty and we insist treatments are disclosed. Manmade, synthetic, and imitation gemstones are not permitted on Gem Rock auctions.