If so, those specimens probably have baked-in dirt, grime, desert varnish, or encrustations from moss and lichens. Scrub as much as you may with a toothbrush and pick away with a dental pick, yet grime remains lodged within cracks and crevices of mineral and crystal structures. What to do?
この記事は Rock&Gem Magazine の January 2021 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です ? サインイン
この記事は Rock&Gem Magazine の January 2021 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
This News is for the Birds
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Black Range Amethyst
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