Pyrite and quartz - Madan, Bulgaria | Ref. 59

Pyrite and quartz from the Madan mine in Bulgaria, year 1997. 

This piece displays a well-developed association of pyrite and quartz, centred around a prominent pyrite crystal rising from the upper part of the specimen. Its broad, highly reflective metallic faces are marked by clearly visible parallel striations.

Numerous smaller pyrite crystals surround the main crystal and interlock with one another, creating a dense and strongly three-dimensional structure. Several of them also show well-defined geometric faces with pronounced striations.

Quartz is abundant, with colourless to whitish crystals emerging between the pyrite crystals and around the edges of the piece. Several points are well exposed and directed outwards. The contrast between the transparent or slightly milky quartz and the metallic lustre of the pyrite is one of the main visual features of this association.

Crystallisation remains visible across several sides, allowing the piece to be appreciated from different angles, while the large upper pyrite crystal remains the main focal point.

Dimensions of the stone: L: 70mm x W: 50mm x H : 45mm.

Weight with acrylic base: 295g.

Pyrite is composed of iron disulphide (FeS2). It has a hardness of 6 to 6.5 and a density of around 5 (+or- 0.5), i.e. it weighs 5 times its equivalent volume of water.

Legend and history of pyrite :

 Known as "fool's gold" because of its resemblance to gold, pyrite has fooled many inexperienced gold seekers throughout history. The ancient Greeks used pyrite to light fires thanks to the sparks it produced when struck with steel.

Cleaning pyrite:

Clean pyrite with a soft, dry cloth to avoid damaging its metallic surface. If necessary, use slightly soapy distilled water, then dry immediately to prevent oxidation.