37ct freeform Cotham marble designer cabochon - Brighton Gemstones
37ct freeform Cotham marble designer cabochon - Brighton Gemstones
37ct freeform Cotham marble designer cabochon - Brighton Gemstones

37ct freeform Cotham marble designer cabochon

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Cotham Marble or Landscape Marble is a variety of Rhaetian (uppermost Triassic) stromatolitic limestone from the Penarth Group, found in south Wales and southwestern England in the area around Bristol, possibly extending to the south coast in east Devon. It is named after Cotham House in Cotham, Bristol.