Star regulus of antimony. Modern reconstruction of early modern process
Star regulus of antimony. Modern reconstruction of early modern process
Curatorial Notes:
This alchemical product is made by first heating stibnite (antimony ore) with iron and saltpeter to extract and purify the metal. The molten antimony cools slowly beneath a layer of slag, creating this dramatic, crystalline structure. George Starkey and Isaac Newton were among those who reproduced this effect.