
Garnet refers to a family of minerals from the nesosilicate group crystallizing in the cubic crystal system. Gem quality garnets are fine stones.
Used alone, the term garnet is synonymous with pyrope-almandine.
Garnets are formed from three silicate groups associated with metal cations, with the general formula X32+Y23+[SiO4]3, where X and Y are ions charged with 2 and 3 positive charges respectively.
The structure consists of a three-dimensional network of octahedra and tetrahedra that share vertices: in the space between these polyhedra there are cavities in the shape of a triangular dodecahedron, in which the divalent cations with coordination 8 are placed. These cavities can be described as tetragonal antiprisms deformed in such a way that the vertices are no longer coplanar.
Depending on the presence or absence of calcium, two groups of garnets are distinguished:
calcium garnets or ougrandites (OUvarovite GRossular ANDradite);
aluminous garnets, or pyralspites (PYRope ALmandin SPessartite).
Ti occurs up to 1% in almandine and 5% in melanites, black varieties of andradite (we can even reach 20% Ti). Yttrium can occur in other garnets such as spessartines which can contain up to 5% Y2O3 or Zn.
Garnets are used in jewelry to make various pieces of jewelry.
Stones calibrated for jewelry at +/- 0.05 mm.
Average weight: 4x3 mm (0.20 cts) - 5x3 mm (0.25 cts) - 6x4 mm (0.48 cts) -
Very beautiful Pink Violet color without inclusions.
| Color | Pink |
| Carat stone | See description |
| Cut | Pear |
| Clarity of the stone | IF |
| Name of the stone | Natural Rhodolite Garnet |
| Origin | Africa |
| Hardness | 6-7.5 |
| Density | 3.5-4.3 |
| Refractive index | 1.72-1.94 |
| Treatment | Unheated |
| Quantity | 1 piece |
| Certificate of authenticity | Not included |
| Audience | Mixed |
| Brand | A Jewels |
| Ref | TMPL_SKU005414 |
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