1.9M+ REVIEWS | 500+ NEW OPALS DAILY |

You have not bid on this auction.

$11.00
Current Bid
1
Bids
Closed
26/12/2017 11:08 pm
1
3262
6

GREEN OPALITE NATURAL 'CATS EYE'' 10.5 CTS [VS1202 ]

SKU
Dimensions (mm)
x x mm
Weight (cts)
Colours

header main

CATS EYE OPAL

 This is a stunning  cats eye opal from Tanzania -Africa.It is well polished with a high dome showing chatoyancy properties.Because of its glossy polish you will see a reflection of the lights we use on the stone.

Hardness mohs scale 5.5 to 6.5 

 

Natural stone  

Weight  10.5 cts

size 18 x 13 x7 mm

NOTE-WE PREVIOUSY LISTED THIS AS A DYED STONE BUT IS A  NATURAL  UNTREATED COLOURED STONE.

 Chatoyancy  or chatoyance, is an optical reflectance effect seen in certain gemstones Coined from the French "oeil de chat", meaning "cat's eye", chatoyancy rises either from the fibrous structure of a material, as in tiger eye quartz, or from fibrous inclusions or cavities within the stone, as in cat's eye chrysoberyl The effect can be likened to the sheen off a spool of silk: the luminous streak of reflected light is always perpendicular to the direction of the fibres. For a gemstone to show this effect best it must be cut  cabochon, with the fibers or fibrous structures parallel to the base of the finished stone. Faceted stones are less likely to show the effect well.

Cats Eye Opal was  formed app  15 to 30 million years ago, during the tertiary period. Starting out as a liquid it seeped through sedimentary layers of earth, settling within impervious clays at a depth of 20 to 30 metres. Over the coarse of millions of years, the liquid slurry crystalized, becoming catseye opal.

Cats-Eye Opalite is a rare chatoyant form of Opal.  The attribute that gives this stone its popularity and name is the phenomena known as chatoyancy, also known in the gem trade as “the cat's eye effect”. The reason for this fascinating phenomenon is very fine inclusions within the stone. When a light source is directed on these inclusions it creates a bright strip that appears and runs perpendicular to the inclusions. This strip will then glide across the surface of the stone when turned over.  This natural gemstone is found only in Tanzania.  Opalite Cats Eye is best known for it's creamy honey color and strong cats-eye effect. Opalite Cats Eye can also occur in shades of yellow, red, white and black.

The physical structure of Opalite Cats Eye is unique. Tiny spheres of silicon dioxide form a pyramid shaped grid interspersed with water. Tiny natural faults in this grid cause the characteristic "play of color". The effect is similar to the rainbow colors displayed on a soap bubble, only much more dramatic.  The incredible play of color is exhibited by the gemstone due to the presence of small spheres in the silica gel that causes interference and refraction appearance. Silicon and oxygen chains are packed in the spheres and these are uneven in size and incoherent in concentration. These are set in a compact structures thus, when ray of light falls it dissects the light on its way through the stone resulting in the awesome color play. As per the size of the spheres within the structure, changeable colors of the gamut are diffracted. With the increase in the consistency of the spheres position, more intense and brilliant would be the color play. 

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 / 21 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

volcanicopals
volcanicopals
VOLCANIC OPALS is run by Paul sedawie of Seda Opals.The Seda Opal company was incorporated in 1994.The owner Paul sedawie is the current president of the OPAL ASSOCIATION INC .Seda Opals is an abbreviation from our surname Sedawie. The business is mainly wholesale and it is through this site that we can bring the opal fields and the bargins direct to you. Paul Sedawie started mining at the Four mile field in Lightning Ridge in 1986 with his first partner Bob Young. It took them 6 months to find a decent stone and this experience gave me a healthy respect for the stone and how hard it is to find. Previous to mining opal, Paul ran a successful mail order business in plants for 7 years which gave him a lot of experience servicing customers through parcel post. We use mainly Australia post as it has a excellent reputation for delivery to most parts of the world. I don't do any active mining now but my eldest son Peter Sedawie has taken over. This leaves me free to travel to any opal field in the world and to enjoy the beauty of this magnificent stone. We hope you enjoy our stock and good luck with your biding 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
Lightning Ridge, Australia
Verified
5970 Feedback

  • nhp7777
    nhp7777
    Positive

    So beautiful but never could afford any. Love to look though. Thank you

  • moss
    moss
    Positive

    Excellent thank you

  • rreissne
    rreissne
    Positive

    Thank you for the nice stone!

  • rreissne
    rreissne
    Positive

    Thank you for the nice stones!

  • rreissne
    rreissne
    Positive

    Thank you for the nice stone!

Bids History (1)
nhp7777
Purchased from this seller previously
6 years ago
$10.00

Why are users outbidding themselves?

When a bid is placed, this is the maximum amount a user is willing to bid for the product. Our system will then automatically bid on that users behalf, incrementally increasing the bid to maintain their position as the highest bidder, up to the specified maximum.

When there is an icon indicating 'Auto Bid,' it means our system is actively placing bids for the user based on their maximum bid. This may appear as if users are outbidding themselves, but it's simply a result of the system updating the bid to reflect the users maximum limit.

Audit

The Opal Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Shipping Details

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

Payment Options

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

Overview

Listing Type : Standard
Product ID : 384565
Starting Bid : $10
Starts : 26th December 2017 05:00 pm AEST
Ends : 27th December 2017 05:08 pm AEST
* All prices are in USD