Vickers Hardness Test
2:33
YouTubeMaterialsScience2000
Vickers Hardness Test
Basic principle and practical procedure of the Vickers hardness test - Testing machine, test piece, diamond pyramid indenter - Basic principle, hardness definition and practical procedure Responsible for this video: Prof. Dr.-Ing. Rainer Schwab, Hochschule Karlsruhe (Karlsruhe University of Applied Sciences), Germany
471K viewsJan 26, 2013
Mohs Scale Explained
What is the Mohs Hardness Scale?
What is the Mohs Hardness Scale?
gemstones.com
Jul 18, 2022
6.1K views · 186 reactions | THE MOHS SCALE EXPLAINED ⚖️ | Saltshack | Facebook
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6.1K views · 186 reactions | THE MOHS SCALE EXPLAINED ⚖️ | Saltshack | Facebook
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HEMATITE EXPLAINED ⬇️ Hematite is an iron oxide mineral with the chemical formula Fe₂O₃. It is one of the most abundant and economically significant iron ores, known for its metallic lustre and earthy red streak. Hematite can occur in a variety of forms, including botryoidal, fibrous, tabular, and massive. Physical Properties: Colour: Metallic steel-grey to black (crystalline forms) and earthy red to brown (massive forms). Streak: Red to reddish-brown. Lustre: Metallic to earthy. Hardness: 5.5–6
0:43
HEMATITE EXPLAINED ⬇️ Hematite is an iron oxide mineral with the chemical formula Fe₂O₃. It is one of the most abundant and economically significant iron ores, known for its metallic lustre and earthy red streak. Hematite can occur in a variety of forms, including botryoidal, fibrous, tabular, and massive. Physical Properties: Colour: Metallic steel-grey to black (crystalline forms) and earthy red to brown (massive forms). Streak: Red to reddish-brown. Lustre: Metallic to earthy. Hardness: 5.5–6
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Tanzanite ranks between 6.5 and 7 on the Mohs hardness scale, which means it is a slightly soft gemstone. Tanzanite also exhibits perfect cleavage, which indicates the gem’s tendency to break from a strong blow. Tanzanite repairs are quite common in our workshop and we always advise setters to be extra careful when working with tanzanites. DM / E-Mail or Drop In 📍 for inquiries. - info@crystalmyths.co.uk www.crystalmyths.co.uk - @crystal.myths _ #gemstone #gemstones #jewelry #jewellery #sapphir
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