A nicely designed lapis lazuli and diamond ring made by Luth Bijoux and likely dating to the 1970s. In 18K yellow gold.
Lapis Lazuli, Approx. 0.05ctw Brilliant Cut Diamonds, 18K Yellow Gold
US Size 7-1/4 (could be resized in the 5 to 8.5 range for $75)
North to South Width: 12mm