This antique platinum ring has a royal blue Ceylon sapphire. This lovely ring has a classic ribbon-bow motif . This ring is from the early 1900s.  This dark blue Ceylon sapphire enhances the beauty of this classic design. This round blue sapphire is embellished by two side diamonds.

Blue Sapphire: One round blue sapphire, measuring appx 0.35 carat weight, 4.3mm diameter, color: dark blue, This blue sapphire is not original to this ring.
Two single-cut old diamonds measuring appx 0.03 total carat weight
Measures: 1/2 inch from side to side, 1/4 inch north to south
Platinum tested, not marked
Size: 7.5, may be resized
Weight: 3.0 Grams
Circa: 1900