Pendant agate grenadilla sterling silver

The almost black wood is African Blackwood (grenadill); Diameter 44mm, thickness approx. 7mm.
An agate is worked in eccentrically, slightly concave on both sides, with a diameter of 23mm.
The stone is not glued in, it is securely held in place by three brass pins distributed around the circumference.
A pendant eyelet and a snake chain made of 925 Stewrling silver complete the subtle, meaningful piece of jewelry.