Olive Quartz stone sits regally on a classic .925 silver band, surrounded by glowing 18k gold halo. A unique 6.54 carat olive quartz center stone, this is the larger stone not the small one. Jeweler verified 10.5, took picture with ruler to show it is about a little bigger than 20mm across center. Comes with a blue Tacori box. Metal: Silver and 18kt yellow gold. Appropriate carats as pictured: 6.54cts Dia Size: 0.53"W X 0.53"L