Scratch Testing Gold - stock video
Scratch testing involves the use of needles verified as having certain levels of gold and low-grade acid solutions corresponding to each karat level. By treating the pieces with acid and comparing scratches from the needles, the tester can confirm what kind of gold is contained in the piece.
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Credit:
Creative #:
639359922
Licence type:
Collection:
Creatas Video
Max file size:
1920 x 1080 px - 295 MB
Clip length:
00:00:39:02
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No release required
Mastered to:
QuickTime 8-bit Photo-JPEG HD 1920x1080 29.97p
Categories:
- Bracelet,
- Close-Up,
- Craft,
- Creativity,
- Equipment,
- Examining,
- Expertise,
- Extreme Close Up,
- Film - Moving Image,
- Gemstone,
- Gold - Metal,
- Gold Coloured,
- HD Format,
- Horizontal,
- Human Body Part,
- Human Finger,
- Human Hand,
- Jeweller,
- Jewellery,
- Macrophotography,
- Making,
- Manual Worker,
- Manufacturing,
- Metal,
- Non US Film Location,
- Occupation,
- Personal Accessory,
- Professional Occupation,
- Serbia and Montenegro,
- Work Tool,
- Working,