14K Gold And 925 Sterling Silver Pendant With Natural Blue Aquamarine (?)

Unique and beautiful two tone pendant with sparkly natural blue gemstone that looks like, possibly, aquamarine. Exotic Gothic, or possibly Celtic, style. 925 sterling silver with solid 14 karat gold rim around the bezel set gemstone. I don't know enough to confirm that the stone is, indeed, aquamarine. It also looks similar to a good quality blue topaz. Please see closeup pictures for details.