Center faceted 15 mm x 20mm Black Agate (15 mm x 20mm) in bead caps and small oval shaped copper and black Czech Glass beads. Four black biconne Swarovski Crystals (8mm) added to the design of the necklace. Hand-knotted and 19″ (plus a 2″ copper chain extender). This is a unique piece that will surely compliment the right outfit. One of a kind.