Emerald is the birthstone for the month of May, so look no further if you're looking to surprise a lucky lady on her birthday! The 4mm emerald cz crystal hangs on a 1mm belcher chain, which is available in a variety of lengths - just choose from the dropbox. The pendant itself measures 7mm high and 4mm wide, with a depth of 3mm. This gold plated sterling silver necklace is complete with a 925 metal mark.