The Earring Curator has dated these Art Deco Amethyst Earrings to the 1940s.

At time of writing I also have a matching ring, see photos, drop me a line if you're interested :)
• Condition: Excellent vintage condition.
• Fixing: Large nine-carat gold butterfly scrolls.
• Hallmarks/stamps: None found. The metal tests as at least nine-carat (375) gold.
• Era: Estimated late Art Deco, c.1930-40s.
• Size: 3.9 x 1.6cm, the amethysts are approximately 9 x 11mm.
• Weight: 12.2g.
The Earring Curator has dated these Art Deco Amethyst Earrings to the 1940s.
All things earrings
You can view the stock and full dealer information on the The Earring Curator Profile Page