Opal, green; Java, Indonesia; 10 kg
Our raw stones are partially not cleaned. Possible impurities such as dust or dirt can be easily and quickly removed with water. This has no impact on the product quality.
Green Opal from Java, Indonesia. 10 kg
This 10 kg lot contains rough pieces of green opal in varying sizes and shapes. The specimens display a deep green coloration, partly with brownish matrix inclusions and lighter zones. The material is natural, showing fresh fracture surfaces, and is suitable for cutting and polishing as well as for decorative collector’s use.
Geology & Origin
Green opal from the Indonesian island of Java forms in association with volcanic processes. Opal is an amorphous, hydrous silica that develops through the deposition of silica gels in rock cavities. In the deposits of Central Java, these occurrences are often related to basaltic host rocks. The distinctive green color is caused by mineral inclusions, most commonly nickel or iron. Indonesian opal is internationally valued for its wide color spectrum and versatility in lapidary work.
Picture shows sample! Item may differ in size, shape and colour from the sample images.
To see the colors better the stones are wetted for some pictures.
Usage Instructions
This product is ideal as a collector's item, decorative element, teaching material, or for scientific and exhibition purposes.
Legal Notices
Safety
We accept no liability for damages resulting from improper and/or non-recommended use. Please carefully assess the suitability of the product before any alternative use.
Responsible Provider
Mikon Mineralienkontor GmbH
Steinslieth 11
D-37130 Gleichen OT Klein Lengden
Email: info@mikon-online.com
| shipment-weight, NOT netto weight (kg) | 10.100000 |
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