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Rare Certified 2.63 ct Andradite Garnet Tanzania SKU-2
- 存貨單位
- 尺寸(毫米)
- 8.030 x 9.000 x 4.790mm
- 重量 (cts)
- 2.630
- Certificate Gem Lab
- AIG
- Treatment
- No Treatment
- Shape
- Heart
- 類型
- Faceted
- Certified Gemstones
- 是的
- 顏色
-
Andradite was named after Brazilian mineralogist José Bonifácio de Andrada e Silva, credited with the mineral’s discovery — but more on that later.
Since andradite is a garnet, you can use this gem as a:
Zodiac stone for supporting the Aquarius, Capricorn, and Scorpio signs in astrology.
Wedding anniversary stone for celebrating two years of marital bliss.
Switching gears, let's take a look at the mineral traits that make andradite a unique member of the garnet family.
Andradite Specifications & Characteristics
Andradite is the final member of the ugrandite garnet series, a group of calcium-iron garnets consisting of andradite, grossular, and uvarovite garnets. This series includes some of the most valuable and prized garnets and provides clues about the history of the rock they're found in.
The andradite formula is Ca3Fe3+2(SiO4)3, representing its chemical composition of calcium, iron, silicon, and oxygen. This chemical composition gives andradite unique physical and optical properties, like its high refractive index and durability.
Here’s an overview of andradite’s mineral data:
Mohs hardness: 6.5 to 7.5
Color: Yellow, greenish-yellow to emerald-green, dark green; brown, brownish-red, brownish-yellow; gray to black; sometimes sectored
Crystal structure: Isometric/cubic
Luster: Vitreous, resinous, or near-adamantine
Transparency: Transparent to translucent
Refractive index: 1.88 to 1.91
Density: 3.70 to 4.10
Fracture: Conchoidal to uneven
Tenacity: Brittle
Streak: White
Treatments: Heat (to enhance color)
Types of Andradite
Although andradite is a type of garnet, it also encompasses a range of distinct varieties, each with its own characteristics:
Colophonite
A brown, red, or orange granular variety with a resinous, amber-like luster.
- 存貨單位
- 尺寸(毫米)
- 8.030 x 9.000 x 4.790 mm
- 重量 (cts)
- 2.630
- Certificate Gem Lab
- AIG
- Treatment
- No Treatment
- Shape
- Heart
- 類型
- Faceted
- Certified Gemstones
- 是的
- 顏色
-
Andradite was named after Brazilian mineralogist José Bonifácio de Andrada e Silva, credited with the mineral’s discovery — but more on that later.
Since andradite is a garnet, you can use this gem as a:
Zodiac stone for supporting the Aquarius, Capricorn, and Scorpio signs in astrology.
Wedding anniversary stone for celebrating two years of marital bliss.
Switching gears, let's take a look at the mineral traits that make andradite a unique member of the garnet family.
Andradite Specifications & Characteristics
Andradite is the final member of the ugrandite garnet series, a group of calcium-iron garnets consisting of andradite, grossular, and uvarovite garnets. This series includes some of the most valuable and prized garnets and provides clues about the history of the rock they're found in.
The andradite formula is Ca3Fe3+2(SiO4)3, representing its chemical composition of calcium, iron, silicon, and oxygen. This chemical composition gives andradite unique physical and optical properties, like its high refractive index and durability.
Here’s an overview of andradite’s mineral data:
Mohs hardness: 6.5 to 7.5
Color: Yellow, greenish-yellow to emerald-green, dark green; brown, brownish-red, brownish-yellow; gray to black; sometimes sectored
Crystal structure: Isometric/cubic
Luster: Vitreous, resinous, or near-adamantine
Transparency: Transparent to translucent
Refractive index: 1.88 to 1.91
Density: 3.70 to 4.10
Fracture: Conchoidal to uneven
Tenacity: Brittle
Streak: White
Treatments: Heat (to enhance color)
Types of Andradite
Although andradite is a type of garnet, it also encompasses a range of distinct varieties, each with its own characteristics:
Colophonite
A brown, red, or orange granular variety with a resinous, amber-like luster.
運輸商 | 運送至:國家 | 運送到世界其他地區 |
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FedEx | $35.00 / :幾天天 | $35.00 / :幾天天 |
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $35.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $35.00
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Express Shipping | $55.00 / :幾天天 | $55.00 / :幾天天 |
:國家
Express Shipping 對包含 2 或更多商品的訂單折扣為 $55.00
世界其他地區
Express Shipping 對包含 2 或更多商品的訂單折扣為 $55.00
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Registered Shipping | $10.00 / :幾天天 | $10.00 / :幾天天 |
:國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $10.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $10.00
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積極的
Happy with this one
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積極的
Good stone and fast shipment. Thx
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積極的
Superb service with delivery. Item as shown
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積極的
Outstanding seller with top quality, well described merchandise and safe rapid delivery. Another great addition to my collection.
為什麼用戶出價高於自己?
出價時,這是用戶願意為產品出價的最高金額。然後,我們的系統將代表該用戶自動出價,逐步提高出價以保持其作為最高出價者的地位,直至達到指定的最高價。
當出現“自動出價”圖標時,表示我們的系統正在根據用戶的最高出價主動為用戶出價。這可能看起來好像用戶出價高於自己,但這只是系統更新出價以反映用戶最高限額的結果。
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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.