安特羅山
Colorado, USA
美國科羅拉多州的安特羅山是北美海拔最高的寶石產地之一,以海藍寶石與稀有的矽鈹石聞名。
What it is known for
Miarolitic cavities in the Mount Antero granite yield blue aquamarine, phenakite, fluorite, and smoky quartz at high altitude.
What collectors look for
Gem aquamarine and the rarer phenakite, well-terminated on matrix, are the most sought-after.