Perhaps if I used different dye / pigment it might have stayed, but I opted to paint the exterior instead since I think it looks more accurate and creates a really beautiful effect. And when i say this thing got hot I mean HOT. I wish I had a temperature gun while making this, because these things would burn my hands even with thick gloves on.
I might have 2 or 3 left over after giving to close friends, but honestly I recommend springing for RestauraJones or Azuma's Sankara stones.
Unless I move to a studio or find a solid replacement for the extremely expensive Matrix Clear we used to coat them - I don't think I will be taking these on again. It was incredibly toxic, expensive and unpredicatble. I threw away A LOT.
But thank you for asking!! Go with Restaurajones or DM Azuma on Indygear if you can afford it!