Rose Quartz Angels and Gemstones Suppliers Rose Quartz Agate Stone, a silicon dioxide crystal, is one of the most frequent varieties of the Quartz family. Its name is derived from its soft rose color, which ranges from very pale pink to deep reddish-pink. It regularly occurs in massive form, though it sometimes grows in clusters of small prismatic crystals. It varies in clearness from solid to transparent to a hazy transparency. Some specimens contain traces of Rutile within the stone which creates 6 rayed stars when polished into cabochons or spheres.