4.5-6mm Grandidierite plain round beads 18.5 inch 93 beads AA grade

One of the rarest gemstones on Earth, Grandidierite is a sea-like blue hue with a hint of green on the translucent body with a vitreous luster, good polish, symmetrical round shape, and a shaded dark to light saturation with 1mm drill holes. AA Grade for this gem strand's depth of color, matching tonal quality, well-crafted shape, and overall rarity.