CHALCEDONY BLUE ROUGH FROM NAMBIA 19.00 CTS [F570]

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About This Auction		About This Seller: QUALITY ROUGH
Minimum Bid (USD)		Feedback Rating	100.00% Positive
Current Bid (USD)	0.00	Member Since	13 Jul in Australia
Bid Increment (USD)	1.00	View feedback Send seller message View 1410 other auctions from this seller More about this seller
Bids Placed	0
Starting Bid (USD)	15.00
Reserve Price (USD)	none
Starts	November 20, 2009 1:05 AM
Ends	November 26, 2009 1:00 AM	Basic Shipping Information
Auction Category	Chalcedony	Shipping Cost	3.00 paid by buyer
Auction ID	118673	Shipping Insurance (optional)	7.00
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Description

SEDAGEMS IS COMMITED TO A FULL DISCLOSURE OF STONES WITH A MONEY BACK GUARANTEE

CHALCEDONY ROUGH

This is a hand selected piece of rough from Nambia which we have cleaned up and it is ready for cutting.

African blue

Weight 19.00 cts app

Size 23 x 13 x 9 mm app

Blue Chalcedony, a member of quartz family, had its origin in Namibia and it is the sacred stone of Native American Indians.
Blue Chalcedony was popularly used in Renaissance magic for safety and health. Comesso, a 16th century technique of beautifying pictures using thin, cut-to-shape pieces of brightly colored, semiprecious gemstones used Blue chalcedony as main ingredient. These pictures developed in Florence were mainly used for tabletops and small wall panels.

Blue Chalcedony jewelry is preferred world wide for its ability to prevent touchiness and melancholy and promote calm, peace and creativity.

It’s available in all variants of blue color with rarely occurring yellow brown and red spots and also translucent. It is widely chosen for cabochon cut, faceting, carving and all kinds of jewelry and decoration objects.

The quality of the Blue Chalcedony is judged by the depth of blue color in the stone. They vary with the depth of blue color which many turn to gray or pink hues. Some of them are very pale to translucent. The value of this gemstone also depends on the light interference from the layers of the Blue Chalcedony inclusions. They are said to be shimmering, floating etc. The color of the gemstone also depends on the place of its origin, for example the Blue Chalcedony from California and Nevada is moderately grayish blue to a light color, Blue Chalcedony from Namibia is called African Blue, in this the color varies from grayish to pure blue color ie., from light color to medium dark blue. The most valuable Blue Chalcedony is from Oregon, which is also known as 'Holly Blue', in this the blue is slightly incorporated with certain amount of pink. Strong color saturation and high degree of translucency are the other factors that determine the price of the stone.