ページの作成:「Copper will tarnish like silver in presence of moisture and sulfur. To all of the cases, however, a lacquer is baked on to prevent the jewelry from tarnishing. To clean c…」
(ページの作成:「Copper will tarnish like silver in presence of moisture and sulfur. To all of the cases, however, a lacquer is baked on to prevent the jewelry from tarnishing. To clean c…」)