Aquamarine
- Hardness
- 7.5 to 8
- Refractive index
- 1.577 to 1.583 with birefringence from 0.005 to 0.009
- Specific gravity
- 2.67 to 2.84
Nomenclature
Indicative weight
– carats
| Dimensions (mm) | Weight (ct) |
|---|
All shapes side by side
| Dimensions (mm) | Weight (ct) |
|---|---|
| 2.00 | 0.03 |
| 2.50 | 0.06 |
| 3.00 | 0.10 |
| 3.50 | 0.16 |
| 4.00 | 0.24 |
| 4.50 | 0.31 |
| 5.00 | 0.45 |
| 5.50 | 0.60 |
| 6.00 | 0.77 |
| 7.00 | 1.10 |
| Dimensions (mm) | Weight (ct) |
|---|---|
| 4 × 3 | 0.16 |
| 5 × 3 | 0.22 |
| 6 × 4 | 0.42 |
| 7 × 5 | 0.65 |
| 8 × 6 | 1.06 |
| 9 × 7 | 1.58 |
| 10 × 8 | 2.09 |
| 11 × 9 | 3.15 |
| Dimensions (mm) | Weight (ct) |
|---|---|
| 4 × 2 | 0.08 |
| 5 × 2.5 | 0.12 |
| 6 × 3 | 0.22 |
| 8 × 4 | 0.49 |
| 10 × 5 | 0.88 |
| Dimensions (mm) | Weight (ct) |
|---|---|
| 3.0 | 0.13 |
| 4.0 | 0.31 |
| 4.5 | 0.33 |
| 5.0 | 0.43 |
| 5.5 | 0.56 |
| 6.0 | 0.92 |
| 7.0 | 1.16 |
| 8.0 | 1.48 |
| 9.0 | 2.1 |
| Dimensions (mm) | Weight (ct) |
|---|---|
| 4 × 3 | 0.18 |
| 5 × 3 | 0.25 |
| 6 × 4 | 0.50 |
| 7 × 5 | 0.92 |
| 8 × 6 | 1.38 |
| 9 × 7 | 1.93 |
| 10 × 8 | 3.16 |
| 11 × 9 | 4.09 |
| Dimensions (mm) | Weight (ct) |
|---|---|
| 2.0 | 0.06 |
| 2.5 | 0.09 |
| 3.0 | 0.14 |
| 3.5 | 0.28 |
| 4.00 | 0.33 |
| 4.5 | 0.46 |
| 5.0 | 0.61 |
| 5.5 | 0.65 |
| 6.0 | 0.99 |
| 7.0 | 1.59 |
Sources
The main deposits are in Brazil,
but aquamarines can also be found in other countries
such as Nigeria, Madagascar, Mozambique, Afghanistan and Pakistan.
Common treatments
Aquamarines are usually heated to remove any greyish or yellowish hues.
This treatment is stable.
Care and cleaning
Handle with care and store separately to avoid any risk of abrasion.
Clean with warm soapy water and dry with a soft cloth