My theme today is #howmuch
It's difficult sometimes to determine the value of something that you see as beautiful, necessary or just simply because you have to have it.
This is Proustite A fine richly intergrown crystal specimen of the Ruby Silver Proustite, with a finger of Proustite standing to 2.7cm with micro-crystals of Sphalerite coated by metallic yellow Chalcopyrite from the fairly recent find at the Imiter Mine, Morocco.
Now this crystal no bigger than an average finger is valued at £2000
So what is it?
Proustite is a sulfosalt mineral consisting of; silver sulfarsenide, Ag3AsS3, known also as light red silver or ruby silver ore, and an important source of the metal. It is closely allied to the corresponding sulfantimonide, pyrargyrite, from which it was distinguished by the chemical analyses of Joseph L. Proust (1754–1826) in 1804, after whom the mineral received its name.
The colour is scarlet-vermilion and the luster adamantine; crystals are transparent and very brilliant, but on exposure to light they soon become dull black and opaque. The streak is scarlet, the hardness 2.5, and the specific gravity 5.57.
Proustite crystals have magnificent red colours and good brilliance. Although facetable, they're too soft for jewelry use but highly desired as collector's gems.
So you'd pretty much need to be an ardent collector of crystals and have access to plenty spondoolies to want this. #darkens #inbrightestday #expensive #composition #collectible #crystals #mainattraction