Zoisite Tumbles #1A measure approximately 11/16" to 13/16". (17.5mm to 20.1mm) and weigh approximtely .4 to.5 ounces (5.9 to 12.2 grams). There is no Ruby showing on the surface of each of these tumbles, but all of these tumbles carry the energy of Ruby. It is more than possible that you could see some Ruby if you broke open this tumble (something I don't recommend that you do). This Zoisite and the variety of Hornblende that you see "grew" with Ruby, so, regardless,the energy of Ruby is in every piece. The black in this crystal is a variety of Hornblende. Please let me pick one for you. These are $2.00 USD each.
(Healing Crystal)
Hardness (Ruby): 9.0
Hardness (Zoisite): 6.0 - 7.0