Is a Calcium, Boron, Hidroxide, Orthosilicates with formula: CaBSiO4(OH) .
Is popular among minerals collectors ,but not so much as facet gem. It can be found in white, yellow and green colors.. Hardness is 5-5.5.
This stone comes from Passo della Futa , on the border of Tuscany,Italy and has very small inclusions.
Size: 5.5x4.2x2.7 mm.