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$29.00
Current Bid
1
Bids
Closed
22/02/2017 09:20 am
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12.2 CTS NEON BRIGHT AMMOLITE DOUBLET [MGW4451]

SKU
Dimensions (mm)
20.000 x 13.000 x 4.000mm
Weight (cts)
12.200
Type
Faceted
Colours

AMMOLITE DOUBLET FROM CANADA

This is a neon bright natural stone that was thin so we mounted it on a stronger backing so its called a doublet. The stone that has been stabilized and resin added to give a top polished look [this prevents the stone from lifting off its natural backing.]and is now ready for setting. The reflection you see on the stone is from the lights we use to take the photo.

Ammolite is a rare and valuable opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of the United States and Canada. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineralthat makes up nacreous pearls.

An iridescent opal-like play of color is shown in fine specimens, mostly in shades of green and red; all the spectral colors are possible, however. The iridescence is due to the microstructure of the aragonite: unlike most other gems, whose colors come from light absorption, the iridescent color of ammolite comes from interference with the light that rebounds from stacked layers of thin platelets that make up the aragonite. The thicker the layers, the more reds and greens are produced; the thinner the layers, the more blues and violets predominate. Reds and greens are the most commonly seen colors, owing to the greater fragility of the finer layers responsible for the blues.

Treatments Although fully mineralized and containing no water—and therefore not subject to dehydration and subsequent crazing—ammolite is often damaged due to environmental exposure. The thin, delicate sheets in which ammolite occurs are also problematic; for these reasons, most material is impregnated with a clear epoxy or other synthetic resin to stabilize the flake-prone ammolite prior to cutting. Although the tessellated cracking cannot be repaired, the epoxy prevents further flaking and helps protect the relatively soft surface from scratching.

Shipping provider Shipping to Australia Shipping to rest of world
FedEx $12.00 / 3 days $39.00 / 10 days
Australia
FedEx is discounted to $12.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $39.00 on orders with 2 or more items
Registered Shipping $9.00 / 7 days $16.00 / 21 days
Australia
Registered Shipping is discounted to $9.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $16.00 on orders with 2 or more items

mineralgemworld
mineralgemworld
MEMBER OF THE [ICA]  INTERNATIONAL COLOURED STONE ASSOCIATION AND PRESIDENT OF THE OPAL ASSOCIATION. We have a retail shop/museum at the Gold Coast Opal and Gem Centre 25 surfers av mermaid waters Qld Australia .4218 open mon to sat 10 to 5
Surfers Paradise, Australia
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Bids History (1)
sfzchen
Purchased from this seller previously
7 years ago
$28.00

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Shipping Details

Shipping:
$16.00 21 days via Registered Shipping
Ships from:
Australia

Payment Options

  • paypal
  • stripe
This seller adds 10.00% tax to transactions in Australia.

Overview

Listing Type : Standard
Product ID : 445874
Starting Bid : $28
Starts : 22nd February 2017 12:42 pm AEST
Ends : 23rd February 2017 03:20 am AEST
* All prices are in USD