7mm Rare Grandidierite faceted rondelles 1mm drill hole 15.5 inch 80 beads

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 faceting, symmetrical shape, and a shaded dark to medium saturation with 1mm drill holes. A Grade for this faceted rondelle bead strand's depth of color, fair matching tonal quality, and some surface irregularities.