Download Close up Sand Dune Desert Wallpaper Wallpapers.com How Do Sand Dunes Form? Dunes Are Ridges Of Sand Formed By Waves. The Importance of Sand Dunes Beaufort.com ocean, beach, coast, black sand, iceland 4K HD Nature Wallpapers HD. This addition to Maggie Lee's Coastal Collection is an original hand carved sand dollar. It is a lovely solid design, finished with contrasting textures to convey the natural, elegant feel of the treasures of the sea. Consider choosing one with a bright diamond that shimmers like the ocean. White or sea green diamonds add a beautiful accent. Available in sterling silver, 14K, or 18K yellow, white, or rose gold. The pendant measures 11 16" in diameter. Available as charm, pendant or complete necklace on an 18" chain.