Details Judy Geib 18k yellow gold & Herkimer diamond quartz crystal Echo necklace. The bezel-set stone measures approximately 1/2" x 3/8" & hangs from Judy's handmade Echo chain. The total length of the necklace measures 18 1/4". - Herkimer diamond quartz crystal - 18k yellow gold - sterling silver details - 18 1/4" total length