This vintage designer ring by Lagos features their medium size brown topaz set in sterling silver.  This rectangular-cut stone is set in sterling silver with 18kt gold accents.  This signed estate designer ring has the Caviar hallmark.

Gemstone: Medium gemstone measuring appx 11.86 x 9.87 x 6.25mm
Hallmarks: Caviar, 925, 750
Measures: 3/8" above finger, 1 3/8" left to right design, 1/2" north to south
Size: 6.5
Weight: 10.1 Grams
Retails: $500