Oval London blue topaz claw set in 14k solid gold with sapphire and diamonds studs. 

London blue topaz: 7x5mm 

Sapphire and diamond and ruby measures: 1.5-2mm each 

Or

Oval Green Tourmaline claw set in 14k solid yellow gold with round brilliant sapphire and diamonds.

Handcrafted at Mabels San Francisco atelier.