Beautiful transparent semi-precious yellow aragonite cabochon stone. Yellow aragonite stone, semi-precious stone, focal stone. Measuring 18 x 13mm. So reasonably priced, too....with semi precious stones there is substance and you can really build value into your work by using them. We cull our stones for quality to make sure of no cracks or chips and that the over-all appearance of the stone is very pleasing. You should expect variations in all natural, semi precious stones. No two stone are exactly alike. Sold by piece.