Pogledaj sve fotografije (6)
Niste licitirali na ovoj dražbi.
Rare Certified 2.63 ct Andradite Garnet Tanzania SKU-2
- SKU
- Dimenzije (mm)
- 8.030 x 9.000 x 4.790mm
- Težina (cts)
- 2.630
- Certificate Gem Lab
- AIG
- Treatment
- No Treatment
- Shape
- Heart
- Tip
- Faceted
- Certified Gemstones
- Da
- Boje
-
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.
- SKU
- Dimenzije (mm)
- 8.030 x 9.000 x 4.790 mm
- Težina (cts)
- 2.630
- Certificate Gem Lab
- AIG
- Treatment
- No Treatment
- Shape
- Heart
- Tip
- Faceted
- Certified Gemstones
- Da
- Boje
-
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.
Pružatelj usluge dostave | Dostava u Thailand | Dostava u ostatak svijeta |
---|---|---|
FedEx | $35.00 / :dani dani | $35.00 / :dani dani |
:zemlja
FedEx je snižen na $35.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
FedEx je snižen na $35.00 na narudžbe s 2 ili više artikala
|
||
Express Shipping | $55.00 / :dani dani | $55.00 / :dani dani |
:zemlja
Express Shipping je snižen na $55.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
Express Shipping je snižen na $55.00 na narudžbe s 2 ili više artikala
|
||
Registered Shipping | $10.00 / :dani dani | $10.00 / :dani dani |
:zemlja
Registered Shipping je snižen na $10.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
Registered Shipping je snižen na $10.00 na narudžbe s 2 ili više artikala
|
-
Pozitivan
Happy with this one
-
Pozitivan
Good stone and fast shipment. Thx
-
Pozitivan
Superb service with delivery. Item as shown
-
Pozitivan
Outstanding seller with top quality, well described merchandise and safe rapid delivery. Another great addition to my collection.
Zašto korisnici nadmašuju same sebe?
Kada se postavi ponuda, to je maksimalni iznos koji je korisnik spreman ponuditi za proizvod. Naš sustav će zatim automatski licitirati u ime tog korisnika, postupno povećavajući licitaciju kako bi zadržao svoju poziciju ponuditelja najviše, do navedenog maksimuma.
Kada postoji ikona koja označava "Automatsku ponudu", to znači da naš sustav aktivno daje ponude za korisnika na temelju njihove maksimalne ponude. Ovo se može činiti kao da korisnici sami sebe nadmašuju, ali to je jednostavno rezultat ažuriranja ponude sustava kako bi odražavala maksimalno ograničenje korisnika.
Revizija
-
Opis Precizan
-
Slike Točne
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.