Green Moss Agate of the highest quality gemstone picks are a truly beautiful musical accessory offering more than beauty, it offers you a beautiful tone to both the acoustic and electric guitars. These picks force the vibration normally absorbed by plastic picks and the fingers back to the surface of the acoustic or the pick-ups on an electric. The standard thickness is 1.5mm to 2.00mm. You'll experience brighter highs and mids. The thicker picks will give the acoustic deeper lows and some real volume. Come visit the World's Largest Inventory and Selection of gemstone guitar picks. Made in the USA.