Jasper is an opaque variety of microcrystalline silica. Silica includes all compounds of SIO2 with different amounts of water and is therefore considered a variety of quartz. The three main varieties of silica are opal, jasper and chalcedony.
Jasper is recognized by its granular microcrystalline structure and by the eye by its opaque appearance and conchoidal fracture.
Because there are various origins, since they are associated with very different rocks, each one will show a characteristic pattern. Regarding the colors, the varieties are infinite due to the small impurities mainly of iron and manganese, and also of other elements.
Jaspers were highly appreciated by man already in prehistory where they were used to create arrowheads thanks to their tenacity. Today they are still highly appreciated by lapidaries for their excellent polishing which allows the creation not only of magnificent ornamental objects but also pieces for jewelry such as cabochons and beads and beautiful collection specimens.
The only genetic classification of jaspers that exists today has been carried out by Marco Campos Venuti, graduate in Geology and PhD in Volcanology, widely explained in his book “Genesis and Classification of Agates and Jaspers: a new theory“, for sale on this website.
This classification organizes the types of Jaspers into four large groups based on their origins:
- Oceanic Jaspers (organogenic sedimentation): flints, abyssal jaspers and banded Iron Formation (BIF).
- Volcanic Jaspers (silicification of volcanic rocks): stratified jaspers, massive blocky jaspers and rhyolitic jaspers.
- Pseudomorphic jaspers on fossil (silicification of fossils).
- Chemical Jaspers (chemical precipitation): orbed jaspers, brecciated jaspers and jasp-agates.
Bruneau jasper is without a doubt the king of jaspers. It is characterised by its wonderful natural patterns and chocolate-brown colours. Its superbly polished finish means that it is also called “porcelain jasper”.
Due to its pattern it is in the family of Orbed Jaspers. From a genetic point of view it has been formed by transformation of an Opal nodule.
Mined since longtime in the Bruneau Canyon, Western Idaho, USA. Today the mining is closed because all the area is now in a wildlife reserve and no more digging is allowed. All the rough on the market is from old collections or stock.
Features of this piece:
- Guaranteed authenticity: 100% natural Bruneau jasper of guaranteed origin.
- Color and appearance: Beautiful pattern and typical colors.
- Hardness: 6.5 – 7 on the Mohs scale.
- Cut: Rectangular cushion-shaped cut cabochon. Cut in Brazil.
Energy properties:
Jasper is considered a stone of protection, stability and vitality:
• It strengthens resistance and mental focus, favoring decision making.
• It promotes connection with the Earth, balancing the body and mind.
• It is known as a stone of support in difficult times, providing security and confidence.
Discover the magic of natural gemstones
Our natural gems have been meticulously selected for their quality, beauty and authenticity. Each piece has unique characteristics, making them perfect for collectors, artisan jewelers, stone lovers, and those seeking spiritual balance.
Details that make the difference
• 100% natural gemstones of guaranteed origin. We control the entire process, from the purchase of the rough by expert mineralogists, geologists and gemologists, to its cutting in our trusted lapidary.
• Ideal for jewelers: enhances the exclusivity of your designs.
• Attractive for collectors: unique pieces with exceptional details.
• Perfect for therapies: they channel energy and balance.
Why choose us
We offer pieces that combine aesthetics, energy and quality and that have been carefully selected so that you can enjoy the best in natural gemstones.
