My wife and I were in Washington state visiting family. I bought a copy of Gem Trails Of Washington. We were staying in Kingston, so I looked for nearby places to find some good rocks. The nearest places were some of the beaches along the Strait of Juan De Fuca. The first beach we visited was Crescent Beach.
We parked in a parking area at GPS coordinates 48°09.66948′, -123°42.20334′. There is another smaller parking area nearby that is even closer to the beach. There was a small restroom here which was convenient.
This place is beautiful, with cliffs and a small island out in the water. The tide was out, so we just walked along the beach looking for and picking up small agates lying in the wet sand. I also found a couple small pieces of petrified wood. All the stones were smooth and rounded from the ocean. Tumbling them was a snap since most of the work was already done.