13.25 CT LONDON BLUE TOPAZ RING: 14K yellow gold ring with a solitaire 13.15 Ct oval shaped mix cut blue topaz, approx. 18mm x 13mm. Rated VVS in clarity. Prong set. Size 7. Weight 7 grams. Sold with current Atlanta Gemological Lab. GIA graduates appraisal for $1,250.