Description: Gemma gemma, amethyst gemclam, 4mm. York River, Goodwin Island, York County, VA - 06/04/13. Photo by Natalia Agudelo, Smithsonian National Museum of Natural History. Date: 6 June 2013, 00:07. Source: Gemma_gemma_(I0435). Author: Smithsonian Environmental Research Center.
Description: Gemma gemma, Amethyst Gem Clam, 3 mm. Sand Point, Rhode River, Anne Arundel County, Deal Quad - 08/10/17. Photo by Robert Aguilar, Smithsonian Environmental Research Center. Date: 22 August 2017, 07:52. Source: Gemma gemma_(I1573)_0502. Author: Smithsonian Environmental Research Center.
