It measures approximately 18 inches around. The quartz briolette is about 11 mm x 8 mm.
See some coordinating earrings here: http://www.etsy.com/listing/58382612/sea-green-quartz-handmade-earrings
And more jewelry in my shop here: http://aubepine.etsy.com/
I offer Paypal, credit cards, and Google Checkout as payment options. If you'd like to use Google Checkout, please select "Other" and I will email you an invoice.