Red Jasper Gemstone Brick Red Disco Faceted Round Beaded Simple Collar Necklace This necklace features 10mm faceted red jasper gemstones beads finished with a silver tone lobster clasp and extender chain. This necklace measures approximately 17.5", the extender chain adding about 1.75". This necklace shows hardly any wear at all - a beautiful jasper necklace! Feel free to make me an offer :)