This isn't an easy stone to have polished in this matrix form

and qualities available

Blue Kyanite Egg Shaped Stone

Finishes of the stone can be pitted depending on the piece

Knightia Fossil Fish Rainbow Moonstone This isn't an easy stoneKnightia is an Eocene aged schooling, ray finned fish which is related to herrings and sardines. It's the most common type of fossil fish found in the Green River Formation of Wyoming. These are shaped discs similar to coasters though they are not sealed or protected. A small plate stand would be suitable for display. 33. 8 55. 8 million years old Great to display! Extinct fish species Use ruler for size reference