You can't bash rocks and not have a hand lense to analyse them with, so we have made a great combo consisting of the Estwing E3-22P Rock Pick Hammer + Belomo™ 10x Triplet Hand Lens + Lanyard.  The specific product details are available at each products specific pages: Estwing E3-22P Rock Pick Hammer, BELOMO™ 10x Triplet, Hand Lens and Belomo™ Hand Lens Lanyard

If you are after another hammer with this combo, let us know and we will make a product page for you to order.