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The Wollo Province opal was different from the previous Ethiopian opal finds in that it more closely resembled the sedimentary opals of Australia and Brazil, with a light background and often vivid play-of-color. [37] Wollo Province opal, more commonly referred to as "Welo" or "Wello" opal, has become the dominant Ethiopian opal in the gem ...
More and more gold mines are being located, such as in the Afar region and in the Konso woreda in south western Ethiopia. [8] On 30 August 2012 it was announced that British firm Nyota Minerals was about to become the first foreign company to receive a mining licence to extract gold from an estimated resource of 52 tonnes in western Ethiopia. [9]
As an opal dealer I deal with both Australian and Ethiopian Opals. It is my understanding that Australian Opal is sedimentary and Ethiopian Opal is volcanic. A discussion of the formation of different types of opals should be included. — Preceding unsigned comment added by Rinda Edgmarbou (talk • contribs) 02:00, 25 October 2019 (UTC)
Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ...
A collection of gemstone pebbles made by tumbling the rough stones, except the ruby and tourmaline, with abrasive grit inside a rotating barrel. The largest pebble here is 40 mm (1.6 in) long. The largest pebble here is 40 mm (1.6 in) long.
Each of the three notable types of opal – precious, common, and fire [3] – display different optical effects; therefore, the intended meaning varies depending on context. The general definition of opalescence is a milky iridescence displayed by an opal, which describes the visual effect of precious opal very well, and opalescence is ...
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