Where is Chrysoprase found?
SiO2 (with nickel inclusions)
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Open the appChrysoprase occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Chrysoprase
Marlborough, Queensland, Australia
One of the most significant and historically important sources, known for producing high-quality, vibrant apple-green chrysoprase.
Silesia, Poland
Historically a major source, particularly from the Szklary deposit, known for its good quality material.
Brazil
Various localities produce chrysoprase, often associated with lateritic nickel deposits.
California, USA
Deposits found in areas with serpentinite bodies, such as the Visalia area.
Tanzania
Emerging source of chrysoprase, often with good color saturation.
Kazakhstan
Known for some chrysoprase occurrences.
Collecting tips
- Geological Context. Focus your search in areas known for ultramafic rocks (serpentinites) that have undergone significant weathering and lateritization. Look for nickel-rich environments.
- Associated Minerals. Chrysoprase often occurs with other secondary minerals like goethite (iron oxides), magnesite, and sometimes opal. These can be indicators of its presence.
- Color and Luster. Look for distinctive apple-green to yellowish-green material with a waxy luster. Freshly broken surfaces may show a conchoidal fracture.
- Veins and Nodules. Chrysoprase commonly forms in veins, seams, or as nodules within the weathered host rock. Examine rock outcrops and stream beds for these forms.
- Hardness Test. As a variety of quartz, chrysoprase will scratch glass (Mohs hardness 7). This helps distinguish it from softer green minerals.
Quick Check
- Color:
- Apple-green to yellowish-green
- Luster:
- Waxy to dull
- Streak:
- White
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