Extremely rare blue Spinel Crystals in Matrix

here you get a absolute true rarity. The collector’s item, which has been found 20 years ago. The calcite matrix, is hosting to intact transparent blue spinel crystals one very big crystal and additionally to smaller crystal with fine transparency but sadly lateral damages. Those matrix specimens have mean found four years in Sri Lanka. The dealer told me the spinel might contain cobalt but under the Chelsea filter, the crystals showed only slightly reddish coloration. nevertheless you get the extremely rare specimen is specially if you consider that nearly all gems from Sri Lanka are found in alluvial deposits.