Apa Saja Sifat Utama dan Metode Perawatan Bahan Perhiasan Populer?
Learn how to care for gold, silver, platinum, diamonds, jadeite, ruby, sapphire, pearls, and amber. Discover cleaning methods, proper storage to avoid scratches and oxidation, and tips to maintain brilliance. Essential knowledge for jewelry sellers, designers, and retailers to protect your products’ value and beauty.