This is a wonderful ring. It would work well as a cocktail, dinner, every day, anniversary or even an engagement ring. There is a large 3.5 carat pear shaped genuine natural opal that just pops with color. It is really a distinctive piece without being overstated. The ring is marked "Hollands" on the inside of the band. This ring is genuine 10 K yellow gold polished to a mirror shine. It has that warm glow and luster that only real gold has. The band is marked 10 K and the piece weighs about 3.0 g.