Suspending a baroque conch pearl measuring approximately 17.0 x 12.7 x 12.8 and 18.2 x 12.2 x 13.2 mm, to the triangular-shaped and brilliant-cut diamond cap, enhanced by a line of two triangular-shaped diamond pentagonal surmounts each centering upon an ovoid conch pearl, mounted in white gold, 4.8 cm long