Thanks to individuals at the United States Geological Survey, an R/V Argo Maine cruise brought me samples from Penobscot Bay (dark brown) and a submerged carbonate beach at Muscongus Bay (lightish green mottled). 15" x 4" Sea glass center framed by Earth crust slurry from Kane Fracture Zone on mid-Atlantic Ridge framed by Penobscot Bay sediment, which is the brown glaze area on interior and exterior of bowl. Lip has a copper green glaze assembled from refined materials. Availability: Usually ships in 2-3 business days. BLPB3US$450.00 5" x 3.5" Brown exterior glaze from Penobscot Bay has a grittiness to it that's unlike the smooth shiny brown interior. Seaglass in the thumbwell. Availability: Usually ships in 2-3 business days. PB-43US$70.00 6" wide x 4" high Center of sea glass on translucent porcelain with Penobscot Bay on exterior and interior of Muscongus Bay (a submerged carbonate beach) in the Gulf of Maine. Rim and foot of glaze assembled from refined materials. Availability: Usually ships in 2-3 business days. GM-7US$150.00 5" x 2" Porcelain and seaglass center. Interior is submerged carbonate beach from Muscongus Bay and exterior is Penobscot Bay. Rim is glaze assembled from refined materials. Availability: Usually ships in 2-3 business days. ME-81US$75.00 11" wide Rim of Muscongus Bay, foram speckled interior from Ceara Rise and exterior of Gulf off Mexico. Click for larger image and read more about places. Availability: Usually ships in 2-3 business days. GM-5Price: US$160.00 US$140.00 5.75" x 2.25 Porcelain Muscongus Bay was labeled "submerged carbonate beach" on the speardsheet that came from the U.S.G.S. cruise by R/V Argo Maine. It has lots of shells in the mud. Exterior is Penobscot Bay. Rim and foot are glaze assembled from refined materials. Center of sea glass. Availability: Usually ships in 2-3 business days. ME-79US$195.00 13" x 7" Interior Bermuda Rise, rim of Penobscot Bay. Availability: Usually ships in 2-3 business days. AT-082US$260.00 5.25" x 2" Porcelain & seaglass. Muscongus Bay interior was called a "submerged carbonate beach" on the spreadsheet from R/V Argo Maine cruise. Exterior brown is Penobscot Bay. Rim and foot are glaze assembled from refined materials. Availability: Usually ships in 2-3 business days. ME-80US$150.00 5.5" x 2.5" Porcelain and seaglass center. Muscongus Bay in, Penobscot Bay out. Celadon glaze on rim and foot were assembled from refined materials. Availability: Usually ships in 2-3 business days. ME-83US$95.00