Ruby calibration gemstones are precision-cut rubies in standard millimeter sizes used widely in jewelry manufacturing. These gemstones are cut in calibrated dimensions so they fit perfectly into jewelry settings such as rings, pendants, earrings, and bracelets.
Calibrated rubies are available in various shapes including oval, round, cushion, pear, and marquise. Popular sizes range from small melee stones to larger center stones used in designer jewelry.
