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Gem Box, 3.8 ct, Peridot, Topaz, Rhodolite, Amethyst and Citrines.
- SKU
- Dimensioni (mm)
- 5.000 x 3.000 x 3.000mm
- Peso (cts)
- 3.800
- Treatment
- No Treatment
- Clarity
- VVS
- Tipo
- Faceted
- Shape
- Oval, Marquise, Pear, Rectangle
- Colori
-
Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from chromophores which have been incorporated into the crystal structure of the mineral. Polymorphs of quartz include: α-quartz (low), β-quartz, tridymite, moganite, cristobalite, coesite, and stishovite.
Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar.
Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at 573 °C (846 K; 1,063 °F). Since the transformation is accompanied by a significant change in volume, it can easily induce fracturing of ceramics or rocks passing through this temperature threshold.
There are many different varieties of quartz, several of which are semi-precious gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.
The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, heliotrope, and jasper.
Shipping: For special requests such as express delivery please contact me. For lost stones the seller is not liable, therefore an additional insurance is recommended. Right of return within two weeks after receiving the shipment. Payment via PayPal, Credit Card, or Bank transfer is possible. For the shipping I generally use: Austrian Post or FedEx. Unfortunately from Austria only DHL "express" is possible.
Please pay your stones in between 48 hours or contact me. Otherwise I need to cancel the deal.
If there is anything you shouldn't be satisfied with please just let me now and we will find a way to solve every problem. My aim is to make you happy with beautiful stones of good quality, good communication is the easiest way to find a solution!
- SKU
- Dimensioni (mm)
- 5.000 x 3.000 x 3.000 mm
- Peso (cts)
- 3.800
- Treatment
- No Treatment
- Clarity
- VVS
- Tipo
- Faceted
- Shape
- Oval, Marquise, Pear, Rectangle
- Colori
-
Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from chromophores which have been incorporated into the crystal structure of the mineral. Polymorphs of quartz include: α-quartz (low), β-quartz, tridymite, moganite, cristobalite, coesite, and stishovite.
Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar.
Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at 573 °C (846 K; 1,063 °F). Since the transformation is accompanied by a significant change in volume, it can easily induce fracturing of ceramics or rocks passing through this temperature threshold.
There are many different varieties of quartz, several of which are semi-precious gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.
The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, heliotrope, and jasper.
Shipping: For special requests such as express delivery please contact me. For lost stones the seller is not liable, therefore an additional insurance is recommended. Right of return within two weeks after receiving the shipment. Payment via PayPal, Credit Card, or Bank transfer is possible. For the shipping I generally use: Austrian Post or FedEx. Unfortunately from Austria only DHL "express" is possible.
Please pay your stones in between 48 hours or contact me. Otherwise I need to cancel the deal.
If there is anything you shouldn't be satisfied with please just let me now and we will find a way to solve every problem. My aim is to make you happy with beautiful stones of good quality, good communication is the easiest way to find a solution!
Fornitore di spedizioni | Spedizione in :paese | Spedizione nel resto del mondo |
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Standard Shipping - Tracked | $12.00 / : giorni giorni | $16.00 / : giorni giorni |
:Paese
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
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FedEx | $27.00 / : giorni giorni | $46.00 / : giorni giorni |
:Paese
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
FedEx è scontato a :prezzo per ordini con :quantità o più articoli
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Express Shipping | $36.00 / : giorni giorni | $75.00 / : giorni giorni |
:Paese
Express Shipping è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Express Shipping è scontato a :prezzo per ordini con :quantità o più articoli
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Registered Shipping | $9.00 / : giorni giorni | $16.00 / : giorni giorni |
:Paese
Registered Shipping è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Registered Shipping è scontato a :prezzo per ordini con :quantità o più articoli
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Standard Shipping - Untracked | $5.00 / : giorni giorni | $13.00 / : giorni giorni |
:Paese
Standard Shipping - Untracked è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Standard Shipping - Untracked è scontato a :prezzo per ordini con :quantità o più articoli
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Positivo
Really beautiful stone. I'm happy with my purchase.
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Positivo
This one is special for sure going to make a treasured family heirloom! Never disappointed with your stones or service. Always a pleasure!
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Positivo
Another beautiful stone that surpassed even my expectations ! Always a pleasure to do business with you!