For your consideration is this nice, petite pendant. While the only mark is 925 I feel safe in saying this is a South American Peruvian piece. Also, while the Incan design is too small to test, mots of these pieces are 18kt gold and I do believe this is also from examination and studying these pieces. Collectible Sterling Jewelry talks about this aspect of value. It is a well made piece with a nice cut out design and green stone. It is marked 925 and has something on the bail but I can't make it out.
It is small measuring 1 and 1/4 inch by 3/4 inches.
Excellent condition with an uneven patina. Color variation in stone is natural.