Black Onyx Natural Gemstone Graduated Roundel Silk knotted Handmade Necklace 20"

Black Natural Onyx Gemstone Graduated sizes 4mm x 6mm, 5mm x 8mm, 6mm x 10mm, 8mm x 12mm, 10mm x 15mm and 12mm x 16mm Roundel hand tied with silk knotted Necklace with .925 Sterling Silver Spring Ring clasp

Necklace Measures 20" long