Cashmere, in ring form. The band is wide, and she is 18k, so the yellow runs deeper and warmer than the 14k most vintage rings come in.
We bought her for the hug. A wide band spreads its weight across the finger instead of biting in one spot, which is why a cigar band tends to become the ring you wear every day. The emerald set into the centre gives her all of her character. Vintage cigar bands with a stone set this well do not come around often.