<https://gotstonedjewelry.com/da/products/apatite-cabochons-apatite-wing-blue-apatite-apatite-natural-blue-stone-blue-crystals-crystals-stone-cabochons-loose-cabochons#product>
<http://schema.org/description>
"These blue Apatite cabochons are hand carved by me, they originate from Madagascar, and they both have some sparkle in them which is very pretty when moved around. This listing is for 1 of them, please chose which number you would like upon checkout. I will do my best in measuring and describing below. All measurements in mm and are approx. as some of them have a lot of dimensions... 1 - Wing shape - 36.80 x 18.75 x 4.60mm . 5.16 grams. 2 - Clam shape - 27.65 x 23.50 x 8.40mm . 8.36 grams.  They are one of a kind, crafted on a lapidary machine. Cabochons shown in the picture are the ones you will receive."
<https://gotstonedjewelry.com/da/products/apatite-cabochons-apatite-wing-blue-apatite-apatite-natural-blue-stone-blue-crystals-crystals-stone-cabochons-loose-cabochons>