• Material: Aluminium metal;
• Purity: 99.99%
• Size: diameter1.5inch×3.5mm thickness;
• Surface quality: two sides and cylinder fine ground;
• Theoretic weight: 10.77grams;
• Actual weight: 10.9grams(0.35troy oz);
• On the front side: engraved HANS CHRISTIAN ØRSTED, the discoverer's picture, atomic number, standard atomic weight, density, melting point, boiling point and net weight.
• On the back side: engraved electron configuration per shell, HANS CHRISTIAN ØRSTED's name and the year of discovery;
• Main uses: element collection, education, gift and so on.

Thank you.