Edwardian Natural Pearl Double Surround Diamond Target Ring

Engagement ring in platinum (hallmark: dog's head), adorned in its center with a natural light golden button pearl (diameter: approx. 6.2 mm) in a double surround of 8x8 and old-cut diamonds. Total weight of diamonds estimated at approximately 0.50 Ct.
Pearl accompanied by a certificate from the LFG (French Gemmology Laboratory) specifying natural seawater pearl without indication of treatment.

French work, Circa 1910.
Gross weight: 2.76g
Height of the pattern: 1.30 cm
Finger size: 51 1/2 (diameter 16.40 / US 5.80).

Condition: very light micro scratches on the setting, slight wear on the setting, and light micro scratches on the natural pearl, see photos.