Worry Stones also known as Palm Stones are smooth, highly polished gemstones, round to oval in shape with a thumb indention. Worry Stones originated in Ancient Greece and are still used today to lessen ones stress and worry and when rubbed bring about a sense of calmness. There are many great uses for these stones, hold while meditating, use as healing stones, to be carried in ones pocket or purse and also make wonderful gifts. In History: The name Onyx has it's roots in Roman history meaning fingernails, it was named such as they thought the stone looked similar to the luster of polished nails and in Hebrew the word signifies "shining or gleaming stones" In more modern times the stone metaphysically is reported to increase vigor, reduce tension and nervousness. In color therapy the color blue brings about a calming effect. A deeper strong sky blue is the most tranquilizing color of all, slowing the pulse rate, deepends the breathing and eliminates the fight or flight repsonse. It is fondly known as the color of heavenly consciousness. Approx Size: 1" Supplied in a velveteen pouch