Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/207979747/opal-necklace-opal-ball-gold-necklace
Silver Solitaire Necklace CZ Diamond Necklace Simple by miniLALI
Tiny Silver Dot Necklace / Small Circle Necklace/ Simple Silver Necklace. $24.00, via Etsy.
My mom bought two of these necklaces from this lady, at a store in carpinteria that carrys her jewlery. One for her & one for me. Beautifully simple. I wear it almost every day! (http://www.etsy.com/people/islamoon)