Here is an unmounted 86.26Ct Ruby Zoisite Oval Cabochon Gemstone. This was examined at the Gem Lab and called natural Ruby Zoisite. If you collect Gems or Love to design your own Jewelry you won't want to miss this 86.26Ct Ruby Zoisite. This has an auction estimate of $500-$1,000 and it will be auctioned to the highest bidder with an opening bid of $1 with No Reserve.