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Hyalite Opal

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Buy Hyalite Opal

Hyalite Opal, also known as Grape Opal or Fire Opal Hyalite, is a unique and mesmerizing gemstone sourced directly from opal miners in Australia, Mexico, and the USA. This opal variety is prized for its glass-like clarity, vibrant fluorescence, and remarkable formation.

What is Hyalite Opal?

Hyalite Opal is a colorless, clear opal that often forms in clusters or globules, giving it the nickname "Grape Opal." This opal type is notable for its brilliant fluorescence, displaying green hues under UV light. In some cases, Hyalite Opal can also show bright orange colors, adding to its allure.

Locations and Sources

  • Australia: Found in Dalby, New South Wales, Hyalite Opal forms on rhyolite rock or in ore deposits and volcanic rocks. The Australian specimens are known for their clear, glass-like appearance.
  • Mexico: In the Magdalena region, Hyalite Opal fluoresces green to yellow with a purple base. Mexican Hyalite is also famous for its bright orange coloration, often referred to as Fire Opal Hyalite.
  • USA: Small quantities of Hyalite Opal are found in Utah's Mineral Mountains. These specimens are sometimes called Ice Opal due to their clear, icy appearance and ability to be faceted into gemstones.

Unique Features and Characteristics

  • Fluorescence: Hyalite Opal exhibits a remarkable green to yellow fluorescence under UV light, making it a captivating addition to any collection.
  • Clarity and Formation: Known for its clear, glass-like appearance, Hyalite Opal often forms in clusters or globules. It is commonly found on rhyolite rocks or as a result of geyser or hot spring deposits.
  • Variety of Colors: While primarily colorless, Hyalite Opal can also display bright orange hues, particularly in specimens from Mexico. These are often called Fire Opal Hyalite due to their intense coloration.

Collecting and Uses

Hyalite Opal is a favorite among collectors due to its unique formation and stunning fluorescence. It can be faceted into gemstones, known as Satin Flash Opal or Ice Opal, depending on its origin. The large specimens from Mexico and the USA are particularly prized for their vivid colors and clarity.