Tsavorite garnet

Tsavorite garnet

Hardness
7.25
Refractive index
1.730 to 1.750
Specific gravity
3.40 to 3.80

Nomenclature

Shape

Indicative weight

– carats

Dimensions (mm)Weight (ct)

A calibrated series, to scale

All shapes side by side
Round
Dimensions (mm)Weight (ct)
2.00.05
2.50.09
3.00.16
3.50.22
4.00.39
4.50.47
5.00.68
5.50.87
6.01.13
7.02.18
Oval
Dimensions (mm)Weight (ct)
4 × 30.20
5 × 30.31
6 × 40.64
7 × 51.09
8 × 61.62
9 × 72.44
10 × 83.42
11 × 94.79
12 × 105.97
14 × 107.17
Marquise
Dimensions (mm)Weight (ct)
4 × 20.12
5 × 2.50.23
6 × 30.36
8 × 40.79
10 × 51.52
12 × 62.30
15 × 74.40
16 × 85.24
18 × 97.84
20 × 1011.38
Heart
Dimensions (mm)Weight (ct)
3.00.12
4.00.28
4.50.50
5.00.61
5.50.86
6.01.01
7.01.63
8.02.32
9.03.19
10.04.74
Octagon
Dimensions (mm)Weight (ct)
4 × 30.28
5 × 30.37
6 × 40.47
7 × 51.55
8 × 62.29
9 × 73.31
10 × 85.07
11 × 96.92
12 × 108.55
14 × 108.80
Pear
Dimensions (mm)Weight (ct)
5 × 30.26
6 × 40.53
7 × 50.92
8 × 51.17
9 × 61.87
10 × 72.53
12 × 84.07
14 × 95.72
15 × 107.46
16 × 1211.00
Square
Dimensions (mm)Weight (ct)
2.00.06
2.50.11
3.00.22
3.50.30
4.00.45
4.50.70
5.00.82
5.51.00
6.01.48
7.02.41

Sources

The name of this garnet comes from the Tsavo Park in Kenya where it was discovered.

However, new deposits have been found in Nigeria, Tanzania, Zambia, Madagascar and Pakistan.

Common treatments

Garnet’s medium hardness makes this stone quite easy to scratch.

Handle with care and store separately to avoid any risk of abrasion.

Care and cleaning

Keep the tsavorite garnet away from heat, thermal shocks, ultrasound and blowtorch as it might cause cracks.