Rough Purple Sapphire, Color Change Flame Fusion Crystals Rough Piece:Semicircle Tail, 19.8×15.3×10.1mm, 7.74g but upgrades can only take

but upgrades can only take you so far

with a high RI of 2

or maybe just square rods)

a standard ER-11 collet for holding dops

see purchasing links below)

Rough Purple Sapphire, Color Change Flame Fusion Crystals Rough Piece:Semicircle Tail, 19.8×15.3×10.1mm, 7.74g but upgrades can only takeThese are pieces of labmade purple color change sapphire grown by the now defunct Swiss Djeva corporation. These have some nice color changes depending on lighting, and when cut will show flashes of multiple colors under mixed lighting. Some have more or less of a color change, the photos show them under different lighting conditions in order to try to capture the colors. Color change sapphire is an all time classic. The color change aspect comes from