One small genuine brown Onyx carved monkey. This carving is vintage and is imported. This item ships in 1-2 days. There is a difference between Onyx and Sardonyx. The layers in these stones range from translucent to opaque for sardonyx. The stones vary in color, too. They may be white or gray, ranging to many colorful varieties. Sardonyx stones usually contain flat-banded, white and brownish-red bands. Onyx is striped, semiprecious variety of the silica mineral agate with white and black, brown or red alternating bands. Its properties are the same as those of Quartz.