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New and used Brooches/ Pins for Opal in the UK at the best prices

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The mineraloid opal is amorphous SiO2·nH2O; hydrated silicon dioxide, the water content sometimes being as high as 20% but is usually between three and ten percent. Opal ranges from colorless through white, milky blue, gray, red, yellow, green, brown and black. Common opal is truly amorphous, but precious opal does have a structural element. The word opal comes from the Sanskrit upala, the Greek opallios, and the Latin opalus, meaning "precious stone." Opal is a mineraloid gel which is deposited at relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, and basalt. Opal is one of the mineraloids that can form or replace fossils. Courtesy of Wikipedia

	Description	Price	Ends
	Lucky Turtle Brooch with Australian Black Opal 18k GP	£5.95	30 August @ 21:00:57
	ANTIQUE VINTAGE OLD ART DECO OPAL BROOCH	£1.24	30 August @ 22:56:57
	Australian Black Fire Opal Brooch 18k White Gold GP	£7.99	31 August @ 00:00:57
	9K Carat Rose Gold Opal Pearl Pin Brooch C1940 NR	£6.05	31 August @ 20:15:57
	Lucky Turtle Brooch with Australian Black Opal 18k GP	£5.95	01 September @ 21:45:57

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