A lapis lazuli with lava stone bracelet and with 8 MM Byzantine Box Chain Bracelet would be a striking and dynamic combination. The deep blue of lapis lazuli with its golden flecks would contrast beautifully against the textured, matte black lava stones. The lava stones could also be used for aromatherapy, as they are porous and can hold essential oils.
The bracelet could feature alternating beads of lapis lazuli and lava stone, or one type of stone could dominate, with the other as an accent. A metal element like a silver or stainless steel charm or spacer could further elevate the design.