Featured in this lot is this sterling silver Montana agate necklace from Navajo artist Calvin Tom. The necklace features a wonderfully and professionally crafted sterling silver and Montana agate construction. The pendant is marked with a 'CT' for the hallmark and is stamped 'sterling' underneath the hallmark. The condition of this necklace is good with no obvious signs of damage and shows good overall condition. The measurements of this necklace from clasp to clasp is 21" and the pendant measures 2 3/8" x 1 1/2". The collective weight of this necklace is 28.6g.