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1.28 Carats Natural Gray Spinel Burma Heat Top Grade

SKU
Afmetingen (mm)
5.500 x 5.400 x 4.900mm
Gewicht (cts)
1.280
Treatment
Heat Treatment
Clarity
SI
Type
Faceted
Shape
Octagonal
Kleuren

ALL NATURAL EARTH MINED GEMSTONES.

Absolutely Stunning quality

ITEM DESCRIPTION:

  • Gem type  :  Natural Spinel 

  • Size.          :  1.28 Carats

  • Color.         : Gray

  • shape.        : Octagon

  • Luster         : Excellent

  • Treatment.  : Heat

  • Origin.         : Burma 


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Spinel, like garnet and diamond, is singly refractive, with the same physical properties in all crystal directions. It belongs to the cubic crystal system, and its characteristic crystal shape is an octahedron, which looks like two back-to-back pyramids. Well-formed spinel crystals are fairly common in nature.Spinel can also form flattened crystals that look radically different from octahedral crystals. The flattened shape occurs when the pyramids that form an octahedron rotate against each other during growth. Scientists describe this as a “twinned crystal.” Large gems cut from good-color twinned crystals are typically shallow, and should be judged on their overall beauty rather than on proportions alone.

The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.

Intense reds and pinks are caused by traces of chromium. The higher the chromium content, the stronger the red hue. Orange and purple stones owe their color to a mixture of iron and chromium.

  • Payment via Paypal, Payments must be received within 2days of item close date. All orders are processed within 24 hours from payment, unless it is a custom order or otherwise specified. We ship to the shipping address you provide during the Gem Rock checkout and are not responsible for wrong or undeliverable addresses.

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We are suppliers of good quality precious and semiprecious gemstones. Our direct access to the mines in different parts of the world provide us the opportunity to provide best quality at competitive prices to our valued customers.
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Verzendgegevens

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Betalingsmogelijkheden

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Overzicht

Vermeldingstype : Standard
Product-ID : 1798947
Begint : 30th October 2024 10:55 pm PDT
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