This is a simple modern style sterling silver framed agate stone disc pendant with natural druzy inclusion suspended from a sterling necklace chain. The pendant setting is unmarked but tests positive for silver content of sterling grade. The 18" box chain that I matched to it is marked 925 Italy near the clasp.
The total weight of both chain and pendant is 14.8 gr. The chain is 18" long. The pendant measures 1.25" in diameter, excluding the bail.
Condition is good.
If you are a fan of natural druzy stones, this simple pendant is a classic.