| what makes a mineral a gemstone | 1.2 | 0.2 | 2594 | 31 | 99 |
| what makes a mineral a mineral | 0.96 | 0.8 | 9172 | 30 | 14 |
| what makes a mineral a crystal | 1.9 | 0.1 | 6755 | 30 | 67 |
| what makes something a mineral | 0.5 | 1 | 7669 | 30 | 40 |
| minerals that form rocks and gemstones | 0.76 | 0.7 | 1096 | 38 | 39 |
| can all minerals be gemstones explain | 1.14 | 0.6 | 330 | 37 | 42 |
| why are some minerals classified as gems | 0.56 | 0.9 | 3941 | 40 | 23 |
| is a gem a mineral | 1.29 | 0.5 | 7872 | 18 | 72 |
| difference between a gem and a mineral | 0.52 | 0.8 | 9066 | 38 | 95 |
| difference between minerals and gemstones | 1.79 | 0.5 | 7415 | 41 | 46 |
| minerals gems and stones | 1.62 | 0.4 | 4490 | 24 | 34 |
| are gemstones minerals or rocks | 1.12 | 0.3 | 960 | 31 | 39 |
| rocks minerals and gemstones | 0.03 | 0.8 | 357 | 28 | 93 |
| can all minerals be gemstones | 0.33 | 0.1 | 7583 | 29 | 26 |
| difference between minerals and gems | 0.06 | 0.9 | 9042 | 36 | 19 |
| how are gemstones mined | 0.08 | 0.9 | 8357 | 23 | 15 |
| rocks minerals and gems | 0.29 | 1 | 7306 | 23 | 76 |
| gemstones crystals and minerals | 1.05 | 0.2 | 9508 | 31 | 19 |
| how gemstones are formed | 1.19 | 0.1 | 5033 | 24 | 64 |
| gems minerals and crystals | 1.63 | 0.8 | 517 | 26 | 48 |
| how do gemstones form | 0.4 | 0.7 | 9651 | 21 | 67 |
| minerals that make gems when melted | 1.45 | 0.5 | 608 | 35 | 68 |
