This is a beautiful 3-stone 18k solid gold ring. The design is an interpretation of Balinese work with detailed granulation and ornamentation.
The center stone is yellow Mali garnet. This is a particular type of garnet that comes from Mali, Africa and is known for its high refractive index which gives it a lot of flash. This piece is a medium-to-light yellow. It is a bright stone but has a one or two flaws or inclusions mostly veils below the surface.
The accent stones are nice green Tsavorites that are clean/clear and were selected because they go well with the Mali garnet.
The ring at its widest point is approx. 9/16” wide (at the front) and the band tapers to approx. ¼” at the back. This is considered a wide-band ring so you might consider sizing based on rings you wear that are comparable.