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especially the green colors
which gives it a red fluorescence with strengh varying based on cobalt concentration and codopant types
likely from nano-sized bubbles or exsolved crystals
The kit was designed initially with the Vevor KD-8801 faceting machine in mind
This is an Ahura FirstDefender portable handheld raman spectrometer which we have retrofit for gemological usage
Rough Orange Sapphire, Flame Fusion Crystals flux especially the green colorsThese are pieces of labmade orange sapphire grown by the now defunct Swiss Djeva corporation. These were grown with the flame fusion method, the oldest technique for growing large sapphire crystals, invented by the Auguste Verneuil in 1883. As typical for flame fusion sapphires, these pieces are all split to reduce internal stresses. With a hardness of 9 sapphire is ideal for use in all kinds of jewelry.
US$ 1534.50
US$ 1262.00
US$ 1272.50