Your bracelet may be a design of David Andersen. The time period and markings you described are consistent with his work, though we would need pictures of the piece to be certain. If you do decide to post additional information, please make sure photo's are as clear and as close-up as possible. The stamps (makers markings) will be important too as this will help us in identifying your piece.
your bracelet sounds very exotic with the crescent moons and green stones! Do you know if the green stones are real emerald gemstones or green paste stones? This will help an appraiser understand if the piece is costume jewelry or high end fine jewelry and also make a big difference in the price.
Costume jewelry can still reach very high values. Some people think that "costume" jewelry isn't worth much, this is not true in many cases. I would get it appraised either way, if it were mine.
