Saikaew Beach, Hat Sai Kaew or Diamond beach is the longest and one of the most popular beaches on Koh Samet. the water is very clear and shallow, so it is suitable for swimming. Saikaew Beach is quite crowed. It contains more than 10 resorts. There are many restaurants, and souvenir shop, Many activitis waiting for you at this beach.

It is located in the North-East and it is about 780 meters long. This is the beach You should choose if you like to have a little people and activities around you, but at the same time live next to a almost paradise-like beach. The sand is almost snow-white and the water is invitingly green-blue.