Warm yellow against cool white, held in a single line so the two metals read as one idea rather than two decisions. Hera was the goddess who presided over marriage, which makes a band that joins two colours a reasonable place to borrow her name. Soft contrast, for anyone who likes their luxury understated.
The Hera ring is a slim band in 14k yellow and white gold, pavé set with natural white diamonds.
Sits flat against other rings, so it stacks without argument.