Select Dice Facet Rough carved It has low Moh's hardness

It has low Moh's hardness (rank 4 on the scale)

The second stone is cut is samarium-doped YAG with a strong orange glow under UV light

which when split will have mini 'geodes' filled with microcrystals

As you would expect for this requires a very high standard of chemical purity and structural perfection--when energizing a crystal imperfections tend to heat up and explode

Select Dice Facet Rough carved It has low Moh's hardnessThese are select pieces of rough hand picked to make incredible dice. They are large blocky pieces of some of our best materials! Cutting dice takes a lot of time and effort you might as well start with something special. I have also added two options for smaller 'starter' dice rough: White IRCM sapphire cylinders These are approximately 20 mm long slices from longer sapphire rods which were intended to go into infrared countermeasures against