I love working with real stones, and pearls. They have a wonderful feel to them, and seem to interact with personal energy even as I work. The chatoyant pale stones are moonstone, and the blue central stone is amazonite, thus Moon River is a sort of play on their names. Freshwater pearls unite the themes-- the moonlight-like gleam of white pearl, and freshwater for the river. Silver seemed the natural choice of metals to go with, being associated with moon and water in magic.
Design is a great pleasure; if one has enough materials to choose from, it is possible to layer a wealth of meaning in one simple item.
Here's a poem I wrote with a watery theme, although not fresh water. ..
Sing me the love song
That the waves sing to the beach
Embrace me like the tide.
Where we touch,
Reshaping one another
In the landscape of life.