At 4 cm, this is one of the largest, complete spherical aggregates of olmiite found, in good condition. It is pristine and complete ALL around, and has the best sparkling glassy luster, and nearly top color. This is a significant piece for a rare species, but more than that it is a beautiful mineral specimen, a 4-cm floater ball of color, that is just amazing to see in person. I understand that very few of this quality AND completeness were found, from my sources. Such pieces are thus valued highly to those who desire absolute perfection and geometry in the specimen.