GIA Gem Project
Various Gems (Barite - Cuprite)


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Brazilianite
Photo by Robert Weldon/GIA, courtesy Dr E. J. Gübelin Collection
GIA Collection 33942
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 jewellery to those that are quite rare and seldom faceted because of the lack of suitable starting material.

35345

7.25 ct Barite from France (PDF)


34335
13.59 ct Barite from Kenya
13.59 ct Barite from Kenya (PDF)


34691

11.91 ct Barite from Namibia (PDF)


35344
6.99 ct Barite from the United Kingdom
6.99 ct Barite from the United Kingdom (PDF)


35167

7.55 ct Barite from the United States (PDF)


35337
2.60 ct Bastnasite from Pakistan
2.60 ct Bastnäsite from Pakistan (PDF)


33928
3.36 ct Benitoite from the United States
3.36 ct Benitoite from the United States (PDF)


35170
3.48 ct Benitoite from the United States
3.48 ct Benitoite from the United States (PDF)


33927
3.77 ct Benitoite from the United States
3.77 ct Benitoite from the United States (PDF)


33936
5.68 ct Beryllonite from the United States
5.68 ct Beryllonite from the United States (PDF)


35350
7.82 ct Beryllonite from the United States
7.82 ct Beryllonite from the United States (PDF)


33939
8.12 ct Beryllonite from the United States
8.12 ct Beryllonite from the United States (PDF)


35173

13.80 ct Beryllonite from the United States (PDF)


33942
11.91 ct Brazilianite from Brazil
11.91 ct Brazilianite from Brazil (PDF)


33948
14.39 ct Brazilianite from Brazil
14.39 ct Brazilianite from Brazil (PDF)


34271
17.33 ct Brazilianite from Brazil
17.33 ct Brazilianite from Brazil (PDF)


35353
1.32 ct Burbankite from Canada
1.32 ct Burbankite from Canada (PDF)


35308
33.52 ct Aragonite from Czech Republic
33.52 ct Calcite from the Czech Republic (PDF)


35416

18.59 ct Calcite from Mexico (PDF)


35415
23.58 ct Calcite from Mexico
23.58 ct Calcite from Mexico (PDF)


34439

27.90 ct Calcite from Mexico (PDF)


35429
6.21 ct Calcite from Spain
6.21 ct Calcite from Spain (PDF)


34788

4.07 ct Cassiterite from Sri Lanka (PDF)


35366
1.97 ct Catapleiite from Canada
1.97 ct Catapleiite from Canada (PDF)


35361
16.34 ct Celestite from Madagascar
16.34 ct Celestite from Madagascar (PDF)


35176

11.52 ct Celestite from the United States (PDF)


35368
1.34 ct Childrenite from Brazil
1.34 ct Childrenite from Brazil (PDF)


33800
5.13 ct Chrysoberyl
5.13 ct Chrysoberyl, locality not stated (PDF)


34797
5.25 ct Chrysoberyl from Sri Lanka
5.25 ct Chrysoberyl from Sri Lanka (PDF)


34792
10.15 ct Chrysoberyl from Sri Lanka
10.15 ct Chrysoberyl from Sri Lanka (PDF)


34800
16.02 ct Chrysoberyl from Sri Lanka
16.02 ct Chrysoberyl from Sri Lanka (PDF)


34313
2.68 ct Chrysoberyl – Alexandrite from Brazil
2.68 ct Chrysoberyl – Alexandrite from Brazil (PDF)


33805
3.43 ct Chrysoberyl – Alexandrite
3.43 ct Chrysoberyl – Alexandrite, locality not stated (PDF)


35557

7.97 ct Cinnabar from China (PDF)


35514
19.87 ct Cinnabar from China
19.87 ct Cinnabar from China (PDF)


35521
20.52 ct Cinnabar from China
20.52 ct Cinnabar from China (PDF)


35433
1.52 ct Clinohumite from Tajikistan
1.52 ct Clinohumite from Tajikistan (PDF)


35516

5.42 ct Cobaltian Calcite from the Democratic Republic of Congo (PDF)


35428
7.93 ct Cobaltocalcite from Spain
7.93 ct Cobaltocalcite from Spain (PDF)


34351
7.78 ct Colemanite from Kenya
7.78 ct Colemanite from Kenya (PDF)


34405
2.69 ct Cordierite (Iolite) from Madagascar
2.69 ct Cordierite – Iolite from Madagascar (PDF)


34555
10.14 ct Cordierite (Iolite) from Myanmar
10.14 ct Cordierite – Iolite from Myanmar (PDF)


34802

8.77 ct Cordierite – Iolite from Sri Lanka (PDF)


35440
4.73 ct Crocoite from Australia
4.73 ct Crocoite from Australia (PDF)


35441
5.40 ct Crocoite from Australia
5.40 ct Crocoite from Australia (PDF)


34705

16.64 ct Cuprite from Namibia (PDF)