ROCK CRYSTAL BLOCK QUARTZ PRISM 5.5 KG NATURAL MADAGASCAR M1195 This block is exceptional, in fact, it weighs a significant weight of 5.5 kg. It could be transformed into a lamp base or kept like this, it is a real sculpture. He is from Madagascar. Rock crystal is a chemically pure, monocrystalline variety of quartz. The most coveted quality of rock crystal is that which will be colorless, clean, without inclusions. Rock crystal may contain a very wide variety of mineral inclusions but also fluid or gaseous inclusions. Rock crystal is quite common since quartz is the most present component in the earth's crust (about 10 to 13%). As such, Brazil and Madagascar are the largest producers of this type of quartz in its finest quality. For the condition, we report rubbing and scratches from use, lacks and chips on the crystals in various places (visible in the photos), however it remains a beautiful object of collection or decoration. For the state thank you for detailing the photos. Feel free to zoom. The photos are an integral part of the description. Dimension: Height: 12 cm Width: 34 cm Depth: 20 cm S: 7DH1Z2VH I remain at your disposal for any questions.