This large Australian light opal cabochon weighs 117.85 carats. Small play-of-color flashes of orange and green predominate in a pinfire pattern, with spots of a more muted blue over a grayish ...

In north-west New South Wales, the opal mining town of Lighting Ridge sits atop a Cretaceous coastal flood plain. The dry, eucalypt and acacia-covered landscape around here is just its latest ...

Jorge Tamayo Carrillo (Opalos & Artesanias Mexicanas, Magdalena, Mexico) outlined current production of fire opal at his family’s mine, located 10 km south of Magdalena in Jalisco, Mexico. Tamayo said ...

Unearth an underground world beneath the dry, red dirt of the Outback. Journey to South Australia’s desert underground mining settlement of Coober Pedy – Australia’s opal capital. The backdrop to many ...

Bitcoin mining involves solving complex mathematical puzzles, validating transactions and securing the network. Miners compete to find the correct hash, adding new blocks to the blockchain and ...

Trout in Mine-Polluted Rivers Are Genetically 'Isolated' May 30, 2024 — Trout living in rivers polluted by metal from old mines across the British Isles are genetically 'isolated' from other ...

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“HMM Opal” will serve on the Pacific South Express (PSX) route, connecting key ports in Korea, China, and the USA. With the capacity increase from previous vessels, this ship is designed for ...

At first, you could "mine" Bitcoins using just the central processing unit of home computers. The mining process became quickly competitive, and faster Graphics Processing Units (GPUs) were used.