GIA Gem Project
Various Gems
(Taaffeite - Zoisite)

Taaffeite
Photo by Robert Weldon/GIA, courtesy Dr. E. J. Gübelin Collection
GIA Collection 34186
Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities. Documents, like the ones below, present information on gemstones that range from occasional use in jewelry to those that are quite rare and seldom faceted because of the lack of suitable starting material.


34665
6.23 ct Taaffeite from Myanmar
6.23 ct Taaffeite
Myanmar (PDF)

 
34186
1.23 ct Taaffeite from Sri Lanka
1.23 ct Taaffeite
Sri Lanka (PDF)

 
34188
2.26 ct Taaffeite from Sri Lanka
2.26 ct Taaffeite
Sri Lanka (PDF)

 
34196
3.23 ct Taaffeite from Sri Lanka
3.23 ct Taaffeite
Sri Lanka (PDF)

 
34933

5.32 ct Taaffeite
Sri Lanka (PDF)

 
34183
11.23 ct Taaffeite from Sri Lanka
11.23 ct Taaffeite
Sri Lanka (PDF)

 
34931

11.23 ct Taaffeite
Sri Lanka (PDF)

 
34298
4.18 Titanite – Sphene from Brazil
4.18 ct Titanite
Brazil (PDF)

 
34021
2.86 Titanite – Sphene from India
2.86 ct Titanite
India (PDF)

 
34219

3.26 ct Titanite
India (PDF)

 
34332
20.86 Titanite – Sphene from India
20.86 ct Titanite
India (PDF)

 
34376
5.83 ct Titanite from Kenya
5.83 ct Titanite
Kenya (PDF)

 
34430

7.87 ct Titanite
Madagascar (PDF)

 
34431
13.00 Titanite – Sphene from Madagascar
13.00 ct Titanite
Madagascar (PDF)

 
35538
0.84 ct Titanite from Mexico
0.84 ct Titanite
Mexico (PDF)

 
35535
1.26 Titanite – Sphene from Mexico
1.26 ct Titanite
Mexico (PDF)

 
34208

4.13 ct Titanite
Mexico (PDF)

 
34228

6.96 ct Titanite
Mexico (PDF)

 
34216
7.85 ct Titanite from Mexico
7.85 ct Titanite
Mexico (PDF)

 
34206
8.18 ct Titanite from Mexico
8.18 ct Titanite
Mexico (PDF)

 
34221

10.00 ct Titanite
Mexico (PDF)

 
34226
3.11 ct Titanite from Pakistan
3.11 ct Titanite
Pakistan (PDF)

 
34980
2.61 ct Titanite from Switzerland
2.61 ct Titanite
Switzerland (PDF)

 
33580

5.11 ct Topaz
Brazil (PDF)

 
33566

7.50 ct Topaz
Brazil (PDF)

 
33563

9.36 ct Topaz
Brazil (PDF)

 
33568

13.00 ct Topaz
Brazil (PDF)

 
33572

14.33 ct Topaz
Brazil (PDF)

 
34304

14.48 ct Topaz
Brazil (PDF)

 
34303

17.07 ct Topaz
Brazil (PDF)

 
33551

19.84 ct Topaz
Brazil (PDF)

 
33584
18.41 ct Topaz from Pakistan
18.41 ct Topaz
Pakistan (PDF)

 
33552
14.32 ct Topaz from Russia
14.32 ct Topaz
Russia (PDF)

 
34944
21.02 ct Topaz from Sri Lanka
21.02 ct Topaz
Sri Lanka (PDF)

 
33547

21.84 ct Topaz
Sri Lanka (PDF)

 
35244

8.71 ct Willemite
The United States (PDF)

 
33556

20.66 ct Topaz
The United States (PDF)

 
35250

25.04 ct Topaz
Zimbabwe (PDF)

 
35258
25.67 Topaz from Zimbabwe
25.67 ct Topaz
Zimbabwe (PDF)

 
35465

22.14 ct Ulexite
The United States (PDF)

 
35543
3.17 ct Vesuvianite – Idocrase from Kenya
3.17 ct Vesuvianite
Kenya (PDF)

 
34383

3.61 ct Vesuvianite
Tanzania (PDF)

 
34385
4.38 ct Vesuvianite from Tanzania
4.38 ct Vesuvianite
Tanzania (PDF)

 
34384

4.92 ct Vesuvianite
Tanzania (PDF)

 
34386
8.23 ct Vesuvianite from Tanzania
8.23 ct Vesuvianite
Tanzania (PDF)

 
35242
0.82 Vivianite from United States
0.82 ct Vivianite
The United States (PDF)

 
34732

4.41 ct Willemite
Namibia (PDF)

 
35547

2.42 ct Willemite
The United States (PDF)

 
35546
9.54 ct Willemite from the United States
9.54 ct Willemite
The United States (PDF)

 
34123
10.15 ct Willemite from the United States
10.15 ct Willemite
The United States (PDF)

 
35548

18.35 ct Witherite
The United Kingdom (PDF)

 
35518

4.67 ct Wollastonite
Canada (PDF)

 
34733

6.40 ct Wulfenite
Namibia (PDF)

 
35554
2.03 ct Wulfenite from the United States
2.03 ct Wulfenite
The United States (PDF)

 
35247
5.41 ct Wulfenite from the United States
5.41 ct Wulfenite
The United States (PDF)

 
35520
16.05 ct Zincite from Poland
16.05 ct Zincite
Poland (PDF)

 
35204
7.36 ct Zincite from the United States
7.36 ct Zincite
The United States (PDF)

 
34127

12.20 ct Zoisite
Locality not stated (PDF)

 
35075

2.96 ct Zoisite
Tanzania (PDF)

 
35072

3.20 ct Zoisite
Tanzania (PDF)

 
35620

5.00 ct Zoisite
Tanzania (PDF)

 
35522
6.11 ct Zoisite from Tanzania
6.11 ct Zoisite
Tanzania (PDF)

 
34134

7.10 ct Zoisite
Tanzania (PDF)

 
34129

8.85 ct Zoisite - Tanzanite
Tanzania (PDF)

 
35038

11.18 ct Zoisite - Tanzanite
Tanzania (PDF)

 
34128
11.98 ct Zoisite from Tanzania
11.98 ct Zoisite - Tanzanite
Tanzania (PDF)

GIA Gem Project

GIA has studied more than 400 important gemstones in the Edward J. Gübelin Gem Collection and is committed to sharing this repository of gemological information.

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Corundum

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Beryl

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Garnet

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Spinel

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Tourmaline

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Zircon

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