Scream Pretty Black Spike Necklace with Slider Clasp - SilverSilver. Inject a hint of jet-black to your outfit with this stunning black spike necklace with slider clasp. The glossy jet-black bullet shaped pendant features a sterling silver jump ring attachment that allows it to hang delicately from an adjustable chain. The perfect accessory to add a mix of boho and gothic to your outfit day or night this pendant necklace features a gorgeous imitation black onyx style spike that will set your look off beautifully. Our slider clasps have been especially imported from Italy, and consists of a small bead lined with silicon that is attached a lobster clasp, the silica grips the chain and stays in place once the chain is adjusted to length. You can choose to wear this necklace long, mid-length or short like a choker, with our slider clasp chains it means you can change the length to suit your style - offering maximum versatility.