EARLY 20TH CENTURY COLOURED NATURAL PEARL AND DIAMOND RING

EARLY 20TH CENTURY COLOURED NATURAL PEARL AND DIAMOND RING
Bouton-shaped grey-black natural pearl of 9.3-9.4 x 8.0-9.0 mm, old-cut diamonds, circa 1900

Gem & Pearl Laboratory, 2018, report no. 16297: natural pearl (saltwater), no evidence of treatment

Size/Dimensions: UK ring size H
Gross Weight: 4.0 grams