Lazarus Jewelers 14K yellow gold Rose brooch pin with diamond 11.2g Vintage
The maker is Lazarus Jewelers. The mark is an LJ with a little star over the J. It is marked 14K and tests with acid and on my machine as 14K. It weighs 11.2 grams. It is about 1 and 7/8" tall. In the center of those rose is a round diamond.