Hermès Black Box Calfskin Constance 18 with Aventurine ClaspThe Aventurine H clasp is what sets this limited edition Herms Black Box Calfskin Constance 18 apart! In gleaming Box leather, its paired with a combination of black aventurine, a glittery form of quartz, and palladium hardware. The magnetic H clasp opens by lifting the center bar to reveal a black leather interior divided into two sections with one slide pocket in each compartment. The flat leather strap can be doubled to a 10 inch drop or worn