Belle Époque brooch/pendant with aquamarine, pearl and diamond

Platinum necklace with pendant, can also be worn as a brooch, set with a large natural aquamarine, framed with a platinum edge set with old-cut diamonds and pearls. The aquamarine is 22 carats, with certificate from the gemstone laboratory. Comes with an original tool to disassemble the brooch.

France, Belle Époque (around 1900)