Women's Prayer Beads, Zirconia, Orange Ball Cut Glass, White TasselLimited to one item! The brilliance of diamonds! You won't find a rosary like this anywhere else. Zirconia is an artificial diamond. Diamonds are made from carbon over hundreds of millions of years under pressure from the heat inside the earth, but zirconia is artificially made and is also called imitation diamond. However, its refractive index is quite close to that of diamond, and its hardness is inferior to that of diamond, coming in second only to