Gray Cushion Cut Spinel Loose GemstoneSparkly natural gray cushion cut spinel gemstone. This loose faceted cushion cut Spinel is available for a custom built ring by Nodeform Jewelry. Choose this gemstone in your preferred size, then select a ring setting that fits the shape and size of the selected stone. Add both to your cart and we'll create your ring! SPINEL SPECS: Size: 6 x 6 mm 1. 0ct or 7 x 7 mm 1. 3ct color Medium gray (slight blue or purple undertones possible) Treatment: none