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Condor agate : ウィキペディア英語版 | Condor agate
Condor agate was discovered and named by Luis de los Santos in 1993. It is found in the mountains near San Rafael, in Mendoza Province, Argentina. This agate exhibits vibrantly colorful bands and patterns, and has become a popular stone among collectors and jewelry designers. == Mining ==
In the early days of Condor agate collecting, a typical month of effort would yield 1 ton of good agates. Currently, excavation is require to find the agates, so an extra effort is needed to supply the ever growing demand for these superb gems. Initially, the agates were found scattered loose over the landscape and were readily harvested in quantity. Today, surface collecting is no longer prolific, so these agates are collected from shallow diggings in the cold agate fields in Mendoza province, Argentina.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Condor agate」の詳細全文を読む
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