For Stone Sizes 7x5mm – 12x10mm. Sizes 10x8mm – 12x10mm have a DOUBLE (Split Shank) Cathedral. Sizes 7x5mm – 9x7mm have a SINGLE Cathedral. Solid Sterling Silver Oval Wire Ring Setting. Important: Any Gem, with a variation in size, length or width, greater or less than (.1mm) of the stated size, will not fit into this setting.