Natural Precious Opal Stones
Natural precious opal stones display a shifting rainbow of spectral colors that dance across their polished cabochon surfaces with every movement. Sourced directly from Australia’s famous outback mining fields, our collection features solid black, boulder, crystal, and light white opals. Every polished loose stone is guaranteed natural and untreated.
Filters
20.75ct Crystal Boulder Opal
AU$1,711
2.7ct Black Opal Green Blue Fire
AU$1,568
Boulder Opal Multicolor Fire 2.1ct
AU$1,497Choosing and Valuing Natural Precious Opal Stones
To evaluate and choose a loose precious opal, buyers must understand the primary value factors. The background darkness, or body tone, is the foundation, with darker body tones (such as black and dark opals) making colors appear more intense and command higher prices. The play of color brightness is equally critical; a brilliant stone displays intense fire even in dim, indoor lighting conditions.
The spectral color range also dictates value, with red being the rarest and most expensive hue, followed by orange, green, and blue. To find comprehensive tips, please consult our how to buy Australian opals technical guide to learn about patterns and body tone scales. Whether sourcing for custom jewelry or building a long term collector portfolio, our ethically sourced, hand selected loose stones offer exceptional quality and value.
Frequently Asked Questions
What defines a precious opal stone?
Precious opal is defined by its ability to diffract light into a vibrant play of color, which common opal lacks.
Where are your precious stones mined?
Our stones are sourced directly from premier Australian fields including Lightning Ridge, Winton, and Coober Pedy.
What shapes are these stones cut into?
We offer classic oval cabochons alongside organic freeform shapes that preserve natural carat weight.
Are these loose stones calibrated?
We offer both standardized calibrated stones for standard mounts and unique freeform pieces.
Can I request custom video clips of these stones?
No, our professional 4K videos already show each stone under optimized neutral light conditions.