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Hardness (or Mohs Hardness) : 8
RI (Refractive Index) : 1,718 à 1,730
SG (Specific Gravity) : 3,61 to 3,67
| Dimensions in mm | Carat |
| 2,0 | 0,03 |
| 2,5 | 0,07 |
| 3,0 | 0,12 |
| 3,5 | 0,22 |
| 4,0 | 0,31 |
| 4,5 | 0,40 |
| 5,0 | 0,56 |
| 5,5 | 0,77 |
| 6,0 | 0,98 |
| 7,0 | 1,40 |
| Dimensions in mm | Carat |
| 4x3 | 0,20 |
| 5x3 | 0,28 |
| 6x4 | 0,53 |
| 7x5 | 0,82 |
| 8x6 | 1,33 |
| 9x7 | 2,01 |
| 10x8 | 2,66 |
| 11x9 | 4,03 |
| 12x10 | 5,22 |
| 14x10 | 6,52 |
| Dimensions in mm | Carat |
| 4x2 | 0,10 |
| 5x2,5 | 0,15 |
| 6x3 | 0,28 |
| 8x4 | 0,63 |
| 10x5 | 1,12 |
| 12x6 | 1,99 |
| 15x7 | 4,40 |
| 16x8 | 5,24 |
| 18x9 | 7,84 |
| 20x10 | 10,64 |
| Dimensions in mm | Carat |
| 3,0 | 0,17 |
| 4,0 | 0,39 |
| 4,5 | 0,50 |
| 5,0 | 0,61 |
| 5,5 | 0,86 |
| 6,0 | 1,17 |
| 7,0 | 1,48 |
| 8,0 | 1,89 |
| 9,0 | 2,59 |
| 10,0 | 3,97 |
| Dimensions in mm | Carat |
| 4x3 | 0,24 |
| 5x3 | 0,31 |
| 6x4 | 0,63 |
| 7x5 | 1,17 |
| 8x6 | 1,76 |
| 9x7 | 2,46 |
| 10x8 | 4,02 |
| 11x9 | 5,21 |
| 12x10 | 7,33 |
| 14x10 | 7,70 |
| Dimensions in mm | Carat |
| 5x3 | 0,24 |
| 6x4 | 0,43 |
| 7x5 | 0,77 |
| 8x5 | 1,17 |
| 9x6 | 1,87 |
| 10x7 | 2,53 |
| 12x8 | 3,50 |
| 14x9 | 5,72 |
| 15x10 | 6,10 |
| 16x12 | 10,22 |
| Dimensions in mm | Carat |
| 2,0 | 0,07 |
| 2,5 | 0,11 |
| 3,0 | 0,18 |
| 3,5 | 0,35 |
| 4,0 | 0,42 |
| 4,5 | 0,70 |
| 5,0 | 0,82 |
| 5,5 | 1,00 |
| 6,0 | 1,26 |
| 7,0 | 2,04 |
Spinel's major deposits are in Sri Lanka, Myanmar, Tanzanie and Pakistan.
Spinels are rarely treated.
Spinel has an excellent durability.
However, ultrasound and steam jets should be used very carefully.
Clean with warm soapy water and dry with a soft cloth.