IMPORTANT ANTIQUE NATURAL PEARL AND DIAMOND BROOCH, The brooch of openwork scrolling and guirland design, set with a central natural button shaped pearl of 15.72 ct. further set with 4 larger old cut diamonds and smaller diamonds, totalling approx. 10.50 ct. W. 6 cm. 22.7 grams. Accompanied by The Gem Testing Laboratory of Great Britain report no, 0127965 stating that the 15.41 - 15.60 x 11.00 mm. pearl is natural Button Shaped. With fitted case