The Bitterfeld crystal-growing company in Germany has been closed for many years, making their material increasingly rare to find. We were fortunate to secure this batch from a European collector and were particularly excited by the smoky hue. This distinctive color is unlike anything produced by the Swiss company Djeva in their more recent offerings. We only managed to acquire a small amount of this vintage material, making it a special and scarce addition.

This description was send to the seller from the a Bitterfeld museum about the different materials that Bitterfeld produced: I can give you the following information: Spinels - blanks Spinel colorless = colorless spinel Spinel pink = rose-colored spinel Spinel yellow = yellow spinel Spinel light green = zircon-colored spinel Spinel dark green, = tourmaline-colored spinel Spinel blue = sapphire-colored spinel (in all color depths) Corundum - blanks colorless corundum – white or leukosapphire, Ruby in all color depths Sapphire in all color depths Padparadscha (orange) yellow sapphire green sapphire alexandrite colored sapphire Misproductions Amethyst Spinel / Aquamarine Spinel Chrysolite rosé / Chrysolite green Violet corundum / rosé kunzite Smoky topaz-colored spinel / colorless corundum or white or leucosapphire]