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164 Cts Virgin Valley Precious Opal Rough DT-A8005 Dreamtimeopals

存货单位
DT-A805
尺寸(毫米)
42.000 x 37.200 x 32.300mm
重量 (cts)
164.000
类型
Rough, Specimen
Shape
Freeform
颜色

Virgin Valley Opal Rough


The layers associated with the volcanic activity are rich in water soluble silica. Water, moving through the volcanic layers, dissolved silica, and carried it into the voids created by the decayed wood. Silica-gel filled the available spaces, and created either complete or incomplete casts of the woody material. Some of the wood was still present, allowing only partial opalization, which we see as a wood and opal combination today

When the conditions are right, spheres of silica will stack in an orderly arrangement which will allow light to be diffracted into its spectral colours. We see this phenomenon as play of colour or “fire” in opal.

 Opals from Virgin Valley are primarily "specimen only"; they are very unstable. Because of this instability, these opals are not often cut and used in jewellery. The reason for this is two-fold. First, this is a very young opal; being only around 15 million years old. Secondly, this opal has formed in Bentonite clay. Bentonite clays are very effective at sealing moisture in and do not drain quickly.

The opal from Virgin Valley can appear in many different ways, some much more rare and desirable than others. The base or body colour is the underlying colour of the opal, disregarding the play of colour.



 

TRADING AS TRUEBLUEOPALS / LIGHTNINGOPALS LLC

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dreamtimeopals
dreamtimeopals
sally Patel and natassa Patel have been in business for 35 years trueblueopal us family owned company Lightningopals llc is USA based sister branch of trueblueopals, we wholesale top opals from all opal fields , working with mining partner's like David Darby of yowah we specialize in investmentopals , and work with auction houses as well , sally has held several positions in opal association and is current treasurer we are members of ica and Agta and American opal society and Lrma other family members are also selling on opalauctions with over 20 stores catering from rough cut fossil beads specimens carvings and more
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30%
优惠券代码 thanksgiving
有效期至
29th Nov 2024

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发货自:
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概述

列表类型 : Standard
产品编号 : 1345115
开始 : 13th November 2024 03:22 pm PST
* 所有价格均以:货币为单位