Beautiful Sphene with excellent cut - Octagon shape is the best shape in Semi-precious stones ICA Certificate No. TH26G112212 Natural Sphene - 2.53 Ct 7.97 x 6.65 x 5.28 mm - Octagonal Step Cut Transparent stone Basically Sphene does not have any treatment - 100% Natutal Shipping to all over the world via express courier and on-time tracking. The photos are taken under white light. So it is representing 10% more color than natural color.