Seaglass from the Straits of Malacca

I have never noticed seaglass at the beach until I saw the jewellery from Tracy of Sea Find Designs on Etsy. A few weeks ago, we were at the beach in Port Dickson, Malaysia and we spent about a half hour or so and found all these pieces of seaglass. They are mostly flat pieces but still beautiful. I wonder what we'll find from the beach here in Singapore.