I have a beautiful little necklace that is gold tone with a gold rose with a blue stone in the center. I don’t see any maker marks or gold content marks so I don’t know what the metal actually is. I’m assuming the stone isn’t real. The chain is 16 1/2 inches long and has another 3 1/2 inches in an extender that could be removed (together 20 inches). The rose is just over 1/2 inch across. See my other ads for jewelry, artwork, home decor and more.