National Geographic Polished Gemstone Marble
National Geographic · Modern (2024)
Identification summary
This is a modern stone marble distributed by National Geographic, likely as part of a science kit, rock tumbler refill, or gemstone collection. Unlike glass marbles, these are fashioned from natural minerals.
Visible record
- Maker candidate
- National Geographic
- Era
- Modern (2024)
- Pattern
- Natural Stone / Solid
- Rarity assessment
- Common
- Condition assessment
- Mint
- Size
- 1/2 inch (approx. 12.7mm)
- Material
- Natural Stone (likely Jasper, Chert, or Agate)