jade berg n. an iceberg made of highly compressed greenish ice. Editorial Note: Great photos of jade bergs can be found here, here, and here. (source: Double-Tongued Dictionary)
Further reading
Diamond dust, tapioca snow, and sugar icebergs — a 1955 glossary of arctic and subarctic terms describes the environment in ways that sound poetic. And a mom says her son is dating someone who’s non-binary. She supports their relationship, but...
The 1955 Glossary of Arctic and Subarctic Terms is a collection of scientific and indigenous terminology that’s dated, but often poetic, which describes the features of an extremely cold landscape. Among those terms are diamond dust, also...