Plum Metallic Black Spinel Heart Briolettes measure approximately 8x6- 9.5x7mm in size, these beads show a highly metallic luster due to the titanium coating in an asparagus golden green hue, these Black Spinel beads exhibit no external characteristics of matrix stone on their smooth polish, beads show a symmetrical heart shape with good faceting, and these Black Spinel beads are opaque with an extremely high brilliance in a golden green tone.