Spinel has a hardness of 8 on the Mohs scale. This beautiful piece of Spinel from Tunduru, Tanzania weighs 2.20 cts and measures 8x7x5mm.l.TUNDURU SPINEL 2.20 CTS 8X7X5MM $65.00 Regular Price$19.50Sale PriceQuantityOut of StockNotify When Available