Beautiful yellow golden fluorescent Calcite and shiny Dolomite crystals on sligthly iridescent Chalcopyrite matrix from Fletcher Mine, West Fork, Reynolds County, Missouri, USA. This striking specimen features lustrous, gemmy yellow-golden calcite crystals elegantly perched among sparkling dolomite clusters, all resting on a metallic chalcopyrite matrix showing subtle natural iridescence. Under UV light, the calcite displays a vivid fluorescence red/pink colour, adding an extra layer of visual allure. The combination of vivid colour contrast and sharp crystal form make this piece a true showcase example from the classic Fletcher Mine in West Fork, Reynolds County, Missouri. The interplay between the golden calcite and the shimmering chalcopyrite base gives the specimen exceptional aesthetic balance, while the dolomite adds a delicate white accent and textural variety. A fine collector’s piece displaying superb crystallization and locality character from one of Missouri’s most famous lead-zinc-copper mines. Aesthetic balance, sharp crystal definition, and a rich colour interplay make this specimen a fine addition to any display of classic American minerals.