From our planet, from creation, gemstone guitar picks are a privilege to use. Besides what was just described they will not absorb any vibration and it forces the acoustic guitar top to resonate longer. Electric guitar players love them for perhaps using a thinner pick for lead and picking and bass players use the thicker triangle picks for clarity and … a different voice. Different gems and different thicknesses give many different voicing. Every genre uses them. They are exciting to use on all stringed instruments and with the bevel on our picks they slide off the strings much quicker. Come to our website and visit the World’s Largest Selection of pictured and individually itemized picks. There are 7,900 to choose from. Come visit soon. www.solidrockproducts.com Made in the USA.