VTG 1960s Agate Slice Semi Precious Gemstone Necklace Natural MCM silver Collar Measures end to end 34 in L pendant 3 in L by 2.25 in W MCM stands for Mid-century Modern, a design movement that was popular from the 1940s to the 1970s. MCM jewelry is known for its geometric designs, silver craftsmanship, and asymmetry No missing pieces Rare one of a kind handmade necklace secure clasp LETS MAKE A DEAL SEND US AN OFFER questions welcomed Combine shipping available