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Polished natural Koroit Boulder Opal, ideal for collecting, jewelry making, or a unique gift idea. Photos and video taken in sunlight.
public Origin: Queensland, Australia
palette Main color: Multicolor
diamond Shape: Freeform
open_in_full Dimensions: 4.9 x 1.7 x 0.8 cm
balance Weight: 72.6 ct
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Boulder Opal is a variety of Opal naturally embedded in the cavities and cracks of an ironstone matrix. The term “Boulder” refers to this host rock, primarily composed of iron and sandstone. This type of Opal is found exclusively in the state of Queensland, in northeastern Australia. Among the most famous Boulder Opal fields are Koroit, Yowah, Winton, Opalton, Jundah, and Quilpie. Boulder Opal is highly prized by collectors and jewelers for its vibrant play of colors and its fascinating patterns, often reminiscent of Aboriginal art.
In crystal healing, Boulder Opal is considered a mystical and magical stone. It is believed to activate extrasensory perception and enhance psychic abilities. It is also used to facilitate communication with spiritual guides and to connect with higher realms. Boulder Opal is known to purify and balance the Chakras, promoting relaxation, inner calm, and a sense of serenity. According to many users, its harmonious vibrations help regulate emotions and stabilize mood. The iron in its matrix is thought to act as an amplifier, enhancing its energetic properties. Boulder Opal symbolizes light and harmony.
Thanks to its matrix, Boulder Opal is one of the most durable and resilient Opal varieties. However, it still requires proper care to maintain its brilliance and vibrant color play over time. Avoid prolonged exposure to direct sunlight and sudden temperature changes. Unlike many other types of Opal, Boulder Opal is water-resistant but can be damaged by salt, chemicals, and beauty products. To clean it, simply rinse under lukewarm water or gently wipe with a damp soft cloth, then dry thoroughly.
Opals
SiO2 - nH2O
Australia (Queensland)
Amorphous
5.5 to 6.5
1.9 to 2.5
Our tips:
Cleansing: water, earth, clay
Recharging: crystal geode, moonlight
We invite you to discover our exclusive selection of natural Boulder Opal Pendants.
We offer to transform our cut gemstones into custom-made jewelry (rings, pendants, earrings, sets…), in gold or silver, according to your budget and preferences.
Data sheet
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