- Agate color: reddish-brown (photo 7 is closest to the actual color) - Design: Oval - Style: Vintage - Ring size: Fits my left middle finger, size 13, almost perfectly. - Agate size: Approximately 2 cm long, 1.4 cm wide I received this from my aunt about 40 years ago. There is no certificate of authenticity, but I remember it being agate. The metal parts have aged and discolored, giving it a vintage look. Please refrain from purchasing if you are looking for perfection, as this is a used item that has been stored for a long time by a private individual. Please consider purchasing only if you understand this.