Ultraviolet light, UV torches and UV flashlights, fluorescence in minerals are new to many people. So we get asked a lot of questions about UV lights and mineral prospecting. Here are some answers.
• What kind of UV torch do I need to look for opal, ruby and sapphire?
• Should I get a Short Wave UV torch or a Long Wave UV torch?
• Long Wave or Short Wave UV torch? A recommended You Tube Video. Watch it!
• Are UV torches safe to use? Do I need goggles?
• Why do UV torches need a filter?
• Which is better: a UV torch with removable batteries or one with a built-in battery?
• What are 18650, 21700 and 26650 batteries? What are protected batteries?
• How can I tell if a UV torch battery is fake?
• Which is better: A wide beam UV torch or a narrow beam UV torch?
• How do Geologists use UV torches when searching for critical minerals?