|The Very Highest Quality Haematite Information...|
Because of its red streak, it is sometimes known in German as blutstein (bloodstone), but this term is better avoided because of confusion with bloodstone, a variety of chalcedony.
Gem quality haematite is black, although some describe it as blue-black.
One of the main sources is Cleator Moor in Cumbria, England, but it is also found in Elba, the Swiss alps, Germany, Scandinavia, and the USA.
It is carved or polished in Idar Oberstein, but much is now processed in places with lower labour costs.
Haematite is sometimes used as beads to imitate black pearls. There are also imitations of haematite, at least one of which produces a red streak.
Haematite in Jewellery
Haematite is often carved as a cameo or sealstone, and is very commonly seen in gent's rings with a crude intaglio carving of a helmeted warrior's head. It is also used as a facetted stone when it resembles black diamond. Because it is opaque, only the top of the stone is facetted, the bottom of the stone is usually left flat.
|Chemical Composition and Name||Fe2O3 - Iron Oxide|
|Hardness||5.5 - 6.5|
|Refractive Index||2.94 - 3.22|
|Specific Gravity||4.9 to 5.3|
|Crystalline System||Hexagonal or Trigonal|
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