1930's Platinum 18.56 CT Natural Star Sapphire .18 CTW French Cut Diamond Ring Tiffany earrings The clasps on the ends

The clasps on the ends are yellow gold while the bars and links in between are alternating white and rose gold

Inside the locket is a little dirty

The piece is signed 925 and the John Hardy makers mark

The pearl is complimented by approximately

Approximate  Measurements for Blue Star Sapphire:

1930's Platinum 18.56 CT Natural Star Sapphire .18 CTW French Cut Diamond Ring Tiffany earrings The clasps on the endsEra: 1930's Hallmarks: 10%IRID PLAT,DV, W. P. M. to L. P. Composition: Platinum Primary Stone: Natural No Heat Star Sapphire Stone Carat: Approximately 18. 56 carats Shape: Oval Cabochon Accent Stone: French Cut Diamonds Color Clarity: G H VS2 SI1 Total Diamond Weight: Approximately . 18 carats Ring Width: 15. 38mm Rise Above Finger: 9. 02mm Ring Size: 7. 75 Ring Weight: 8 grams Ring Condition: Excellent Estate Condition, Abrasions on Diamonds