First, start your own thread here and post lots of photos of them.
Second, I am not sure if you can get the best prices if you don't put them in small lots. I couldn't tell if you wanted to sell them all at once. Easier, if you find a buyer, but the entire lot will go for far, far less than selling in singles matching pairs and small lots of 4-5 similar pearls.
Ebay is perfect for this kind of sale. Then you can post the listing as a signature in your thread and we can goover there if we wants to buy.
Antz, who started this thread would be a good person to look at his eBay website. He is patient and is developing a good market atmosphere over there for ab pearls. The more pix you post here the more publicity. We don't actually buy and sell here, but there is a lot of window shopping and people click through if they like an item. You just need to be sure there is a safe way for people who to and EBay is a very reliable way to do it. Go to eBay and search for abalone pearls. You should get a good idea of the going prices. To see what has actually sold, scroll down the left side of the page until you get to 'completed sales' and click on that. The sold pieces tell you what is really the going market price.
Good luck. We will help you as much as we can with advice and by having the images up on this site.