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OPALS, Part 1 – Boulder Opals

In this first in a five-part series about OPALS, we take a look at the Boulder Opal – the rarest form of opal – and spotlight some dazzling jewelry utilizing this magical multihued Australian mineral
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Fire opal


It's actually not a mineral:Opal is a hydrated amorphous form of silica; its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Because of its amorphous character it is classed as a mineraloid, unli...

Opalized Dinosaur Tooth

Humor : Neatorama

Photo: Carl Bento/Australian Museum Surely you've seen fossils in museums, but what about this: opalized dinosaur tooth. Opalized fossils occur when silica settled into cracks in the dinosaur bone and then hardened into opal. This o...

Strong results for opals and bejeweled eggs achieved at Bonhams in Los Angeles

Arts : Artdaily

Bonhams auctions of glittering Gems, Minerals & Lapidary Works of Art and The World of Opals took place on December 10, offering over 400 lots of unmounted gemstones, exotic gemstone jewelry, mineral specimens and fine gemstone carv...

Finding The Ocean Inside An Opal

Humor : The Presurfer

image credit: Taifighta cc Opal is a hydrated amorphous form of silica. Because of its amorphous character it is classed as a mineraloid, unlike the other crystalline forms of silica which are classed as minerals. The internal struc...

Boulder opal

Humor / odd : TYWKIWDBI

Boulder Opal - Quilpie, Queensland, Australia "Boulder opal consists of concretions and fracture fillings in a dark siliceous ironstone matrix. It is found sporadically in western Queensland." Via the Minerals Minerals Minerals! tum...


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