Mid-Century Marianne Ostier Emerald Cut Diamond Ring, 7.23 carat G/VS1, in Platinum signed-designer The 18k yellow gold vertically

The 18k yellow gold vertically fluted top set above the horizontally fluted steel band

In 18k white gold

The fins of the fish are beautifully enameled in blue and the body is bedecked in seed pearls

With pendant bail

all set in platinum

Mid-Century Marianne Ostier Emerald Cut Diamond Ring, 7.23 carat G/VS1, in Platinum signed-designer The 18k yellow gold verticallyCentering upon a 7. 23 carat emerald cut diamond, accentuated by a halo of alternating pear and round brilliant cut diamonds, with tapered baguette diamond shoulders, set in platinum. With Marianne Ostier hallmark. Accompanied by a GIA (Gemological Institute of America) report stating the 7. 23 carat diamond is G color, VS1 clarity, with excellent polish, very good symmetry, and faint fluorescence.