Hi Antz,
I would have to agree that sorting your pearls will be in your best interest. This will give any interested party the ability to accurately determine the parcels value.
I would have to disagree with the idea that Pearls from Haliotis iris are any more rare or valuable then pearls found from any other variety of Haliotis. The fact is that all Gem quality abalone pearls hold strong value no matter from which species they are found. A true Gem quality pearl is determined by size, shape, color and luster. In our industry an ideal abalone pearl would weigh over 10 cts, be of symmetrical shape (round, drop or oval) and have a mirror like luster. Color is subjective and the value of a color changes with each client. I have clients from Asia who are most interested in pearls that are white to pink (as found in some pearls from Haliotis corrugata) Other clients in America and abroad are attracted to strong blues and greens and are willing to pay more for pearls exhibiting these colors.
I wish you the best in the sale of your collection.
Jeremy