| A | B |
|---|
| Fracture | property of minerals that break with jagged surfaces. |
| crystal-structure | Atoms arranged in a regular geometric pattern. |
| Veins | Mineral-filled cracks in rocks. |
| Mica | Mineral with perfect cleavage. |
| Gem | A valuable, highly priced mineral. |
| Saturated | Containing the maximum amount of solid. |
| Facet | Tiny, polished side of the gemstone. |
| Corundum | The mineral source of rubies and sapphires. |
| Luster | Way in which a mineral reflects light. |
| Cleavage | Property of minerals that break along smoth flat surfaces. |
| Quartz | Good example of a mineral with fracture. |
| Hardness | Measure of how easily a mineral is scrached |
| Magnetite | Mineral that is naturallly magnetic. |
| Streak | Color of mineral that is broken and powered. |
| Sulfur | Mineral that has a distinctive yellow color. |
