Amy Kahn Russell Vintage Turquoise Pin

This is one of the first pieces I ever bought from Amy about 35 years ago.  I love the incredible pattern in this pure turquoise donut pin set in sterling silver. It's a pin although a chain could be slipped through the hole to make it a pendant.  I've kept 3 Amy pins that I thought I'd never part with but since I mostly wear my own jewelry I've decided to let this go to one lucky person,  2" circumference.