3.1" Smoky, Yellow Quartz Crystal Cluster (Heat Treated) - Madagascar

This is a smoky, yellow quartz crystal cluster that was collected from Ansirabe, Madagascar.

Madagascar produces some beautiful quartz crystal specimens, some of which come from the Ambolo quartz mine in Antsirabe. Smoky quartz and citrine quartz have also been collected from this area, however the supply of natural citrine is extremely limited.

This specimen has the trademark yellow "citrine" coloration although it is not natural. It acquired its color through heat treatment of smoky quartz. The yellow "citrine" quartz coming out of Madagascar is heat treated, even though it's being listed by dealers as "natural". Natural citrine is quite rare and the cost will typically reflect this. If the price of a quartz specimen that's listed as natural seems too good to be true, it likely is.

Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.

Quartz var. Smoky
Antsirabe, Vakinankaratra, Madagascar
3.1 x 2.3"