Slicing ruby like butter

Had some success cutting synthetic Ruby rods using very thin (0.15mm) diamong cutting disk. These rods were once made for high-power pulse lasers (they were eventually made completely obsolete by much more efficient Neodimoum lasers). Chipping at the very last moment of the cut is still not completely solved.

Photo cannot show incredible fluorescence of Ruby at 692nm - longest red wavelength, almost infrared... Deepest and most intense red that human eye can see...


Ruby rod has to be glued to glass holder with expoxy/UV glue: