Ten-millimeter trillion blue composite turquoise with 6mm round spiny oyster shell sterling silver drop earrings measuring approximately 1.60 inches long by 0.37 inches wide with push-back backings - the Southwest earring where the trillion cut turquoise and round spiny oyster shell create a two-material, two-shape dangle with genuine presence. The trillion cut's triangular form gives the turquoise a directional energy that oval and round stones cannot replicate. Composite turquoise. Natural spiny oyster. Push-back backings.