Natural Opal Kalimaya [LP264]

SOLD,-

Description:

• Kode : [LP264]
• Gemstone : Natural Opal Kalimaya - BIG SIZE
• Origin : Africa
• Dimention : est 18,5x15x7.5mm
• Weight : est 10,4ct
• mau kalimaya yang banten mas? maaf mas, sementara saya ngga menyediakan opal kalimaya banten, karna setiap saya dikirimi atau menirim sering pecah, yang banten rentan pecah, terlalu rapuh, apa iya kalau mau dibuat cincin masa cincin harus dibasahi terus? (*_*)'

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Natural Agate Ying Yang [LP247]

Rp 400.000,-

Description:

• Kode : [LP247]
• Gemstone : Natural Agate Ying Yang
• Dimention : est 20x20x5.5mm
• Weight : est 16.35ct

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Natural White Sapphire Star [LP201]

Rp 600.000,-

Description:

• Kode : [LP201]
• Gemstone : Natural White Sapphire Star
• Origin : Ceylon
• Dimention : est 9x74.5mm
• Weight : est 3.15ct
• Pendant : silver

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Natural Moonstone Cats Eye [LP200]

Rp SOLD,-

Description:

• Kode : [LP200]
• Gemstone : Natural Moonstone Cats Eye
• Dimention : est7x7x4 mm
• Weight : est 1.75ct
• Ring : silver

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Natural Sapphire Star [LP189]

Rp SOLD

Description:

• Kode : [LP189]
• Gemstone : Natural Sapphire Star
• Origin : Ceylon
• Dimention : est 9x8x4mm
• Weight : est 3ct
• Ring : silver
• Ring size : 18

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White Orthoclase Feldspar

Orthoclase, an alkali feldspar, happens in a variety of colours, the most typical being colourless. Adularia, a colourless, transparent variety from Adular-Bergstock in Switzerland, includes a bluish white “schiller” or sheen, called adularescence.
Orthoclase feldspar happens in intrusive igneous rocks and is among the main constituents of granitic pegmatites. It's also present in metamorphic rocks for example schist and gneiss. Clear, colourless orthoclase happens in Madagascar. Yellow and colourless cuttable material, cat’s-eyes, plus some star stones occur within the gem gravels of Sri Lanka and Burma.
Feldspars are the most typical rock-forming minerals in the Earth’s surface. They're dicvided into two groups: the alkali feldspars and also the plagioclase feldspars. Orthoclase derives its name in the Greek for “break straight”, a reference towards the stone’s perfect cleavage at near 90 degrees.

Properties

Chemical Composition: 

Potassium aluminium silicate

Crystal System / Forms: 

Monoclinic

Hardness: 

6

Specific Gravity: 

2.56

Lustre: 

Vitreous

Refractive Index / Birefringence: 

1.51-1.54 / 0.005

Cuts & Uses: 

Brilliant, Mixed.

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White Sapphire

The various colours throughout members from the corundum group result from small quantities of metal oxide impurities. Corundum without impurities (and for that reason without colour) is rare, however when found is classified as colourless sapphire. Stones comprised of different colours, including colourless areas, tend to be more common. Stones like thee are usually orientated through the cutter so the colour reaches the bottom. Then, when viewed from above, colour fills the stone.
Truly colourless sapphire can be found in Sri Lanka. Cloudy or milky coloured sapphire can also be present in Sri Lanka, and known locally as “geuda”. Heat treating geuda produces blue sapphire, high of that is faceted and utilized in jewellery. Some Sri Lankan corundum shows red, blue and colourless areas, which can be faceted or polished to provide a fascinating stone.
Synthetic colourless corundum may be made by the Verneuil method since concerning the 1920’s, and it has been called diamondite.

Properties

Chemical Composition: 

Aluminium oxide

Crystal System / Forms: 

Trigonal

Hardness: 

9

Specific Gravity: 

4.00

Lustre: 

Vitreous

Refractive Index / Birefringence: 

1.76-1.77 / 0.008

Magnification: 

• Bubble-like inclusions.

Cuts & Uses: 

RBC, Mixed, Cabochon.

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