this are the only information i have
the big pearls(CHINA CLAM PEARL) measurement is 19.71 x 10.67 x 15.21mm and weight is 39.69 karats
the small pearl (CONCH PEARL) measurement 7mm and weight is unknown or N/A
I have a number of friends who have numerous natural pearls in different shapes and sizes. Where would they start to beguin to auction their finds? I don't know I'm just a good collector. But i Have been thinking about auctioning too.