Stone of the month for June: The Pearl
We meet again today about the stone of the month of June: the Pearl. Characteristic of white pearl It is made up of calcium carbonate and organic compounds. It has an estimated hardness of 3. A little history The first pearl was sewn onto a garment accompanied by shells. It was discovered during excavations on tombs dating from the Paleolithic, in Dordogne, Italy and even in Russia. One of the graves found contained two children and an adult. It was completely covered with thousands of...
