| Weight | 0,1 kg |
|---|---|
| Sales Unit | |
| Minimum order | 500 gr |
| Type | |
| Dimensions (±) | 4 - 6 cm |
| Number | 15 pieces per kg |
| Form | |
| Origin | |
| SKU | 6534 |
Black Opal Handstones
Sales unit: Per 100 gr
Minimum order: 500 gr
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Black Opal Handstones from Madagascar
Opal
Opal is an amorphous form of silica with variable water content. Within opals, a distinction is made between precious opal, which is known for its play of colours (opalescence), and ordinary opal, which does not show this effect. Common opal occurs in various colours such as white, pink, blue, green or brown, usually with a waxy to glassy luster.
Major deposits include Australia, Peru, Mexico, Brazil and the United States. Its chemical formula is SiOâ‚‚-nHâ‚‚O. Common opal often forms in volcanic or sedimentary environments. Its hardness is between 5.5 and 6.5 on the Mohs scale.
Well-known varieties include pink Peruvian opal, green opal, Black opal and dendritic opal, which are distinguished by their unique colour and inclusions.
Sources:
Mindat.org, Gemdat.org, Wikipedia - Opal
Hand stones
Hand stones are our largest, tumbled and smoothly polished (precious) stones that often sit very well in the hand, which immediately explains the name. Drummed, this size is also called a palm stone or jumbo stone. Often these stones are extra polished or ground after tumbling for a beautiful end result. Despite this consistency, it remains a natural product, so variations in shape, colour and pattern can always occur. This can vary from one type of stone to another.
Generally, handstones have a size between 4 × 3 × 2 cm and 6 × 5 × 3 cm. Almost all our handstones come from Madagascar, where they are carefully selected and processed. The product photos give a good impression of what to expect. Hand stones are sold per 100 gr (1x), with a minimum order of 500 gr (5x).
