A stunning genuine Pearl necklace, measuring 17 1/2" or 43 cm long. Each Pearl measures 7 mm.  The fishhook clasp has three almost perfect Pearls set into the 10K white gold. The clasp is stamped 10K and beside that is a stylised M.  Research led me all over the internet to many marks but I couldn't identify one and be telling the truth if I said I know what it is. It's heavy in the hand and cool, almost cold to the touch until it warms up. Pearl necklaces differ slightly in length. This would likely have been an 18"  but because pearls differ in size so does the length.