Massive Sterling Silver Blue Topaz & Champagne Citrine Ring Size 7 1/2

Massive sterling silver ring in size 7 1/2. It is set with a faceted blue cubic zirconia that is is the color of a blue topaz. The smaller stones that are set on front of the ring as well as around the entire band are genuine. They are blue topaz and quartz stones in the citrine color spectrum. The stones on the band are accented with raindrops that appear to be gold or have a gold plating. 

Face of the ring measures almost 1 1/2" by 7/8". It has a hallmark inside with an M inside of a heart and the right base of the M is an arrow. I am sure that this is a high end piece that was most likely sold at an upscale department store, but I do not follow such brands and do not know whose mark this is. 

Weight: 21 grams. Some tarnish. Very well made.