Fun and flirty, this festive multicolor Sea Sediment Jasper necklace is adjustable in length with Lobster Claw Clasp! Beautiful green, orange and blue hues throughout! Sea Sediment Jasper, also known as Impression Jasper, is a composite made by fusing stone fragments using heat, pressure and a stabilizing agent or resin. The stone fragments remain clearly visible, creating fascinating patterns. The stone used to create composite beads is usually the remnants from cutting, making them a great way to incorporate upcycled elements in designs.