Using our guitar picks are both effective plus very pleasant to look at. This agate pick will not absorb vibration so it forces the guitar top to resonate longer. There's nothing like picking or strumming with a very solid pick. Thinner picks usually mean brighter highs and heavier picks mean more volume and deeper lows. The most popular thickness based upon our sales is from approximately 1.5mm to 2.5mm. Many people have their own thickness that suits them better. It's like picking out a guitar for someone, that job is really an individual preference. Come visit our site, the World's Largest Inventory...you'll be glad you did.