Conservation
Montblanc Pen Gemstones: Identification and Care
A prudent guide to preserving malachite, quartz, onyx, mother-of-pearl, and other decorative materials.
5 min de leitura
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Context and Design
Color and luster do not reliably identify natural, synthetic, or composite materials used in the editions.
Research and Preservation
Avoid ultrasonic cleaning, steam, acids, and polishers; always respect the most sensitive material in the set.
Editorial and educational content. For authentication, evaluation or repair, consult a professional.