This is a gorgeous 18k solid gold ring with a deep red ruby. The design is based on a traditional Balinese styles with intricate granulation on the setting but note the extra details of the twisted wire band.
The ruby comes from the Winza mine in Tanzania and is completely natural (unheated). It has deep red color and is bright even in subdued light. There are minor imperfections (most visible only under magnification) which is common for natural untreated ruby.
The ring at its widest point is just over 1/2” wide (at the front) and the band is approx. 1/8” wide at the back.
Learn more about sapphire/ruby at this link.