Microphotgraphy using polarized light yields beautiful art. It also is very helpful in learning more about a gem.
Small Herkimer diamonds are usually the best ones, but it’s enormously satisfying to watch someone extract this huge, faceted crystal from the surrounding rock.
Tolkien fans, assemble! There is an ambiguous line in his 1933 poem Errantry: Of crystal was his habergeon I’m not sure what a habergeon