1920'S 18K GOLD DIAMOND FILIGREE RING: 18K white gold ring centers an old European round cut diamond, approx. .53 ct, rated VS1 in clarity and J in color. The 4 round single cut accent diamonds weigh approx. .06 Ct. All stones are prong set. Signed Barth. Size 6.5. Weight 2.9 grams. Sold with current Atlanta Gemological GIA graduates appraisal for $2,450.