GIA Gem Project
Various gems
(Kornerupine - Natrolite)


Kornerupine
Photo by Robert Weldon/GIA, courtesy Dr E. J. Gübelin Collection
GIA Collection 34365
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.

34365
1.64 ct Kornerupine from Kenya
1.64 ct Kornerupine from Kenya (PDF)


34366
1.80 ct Kornerupine from Kenya
1.80 ct Kornerupine from Kenya (PDF)


34368

5.54 ct Kornerupine from Kenya (PDF)


34067
3.96 ct Kornerupine from Sri Lanka
3.96 ct Kornerupine from Sri Lanka (PDF)


34848

4.90 ct Kornerupine from Sri Lanka (PDF)


34069
7.11 ct Kornerupine from Sri Lanka
7.11 ct Kornerupine from Sri Lanka (PDF)


34851

7.43 ct Kornerupine from Sri Lanka (PDF)


34850

7.86 ct Kornerupine from Sri Lanka (PDF)


34063
11.19 ct Kornerupine from Sri Lanka
11.19 ct Kornerupine from Sri Lanka (PDF)


35016
4.39 ct Kornerupine from Tanzania
4.39 ct Kornerupine from Tanzania (PDF)


34274
6.10 ct Kyanite from Brazil
6.10 ct Kyanite from Brazil (PDF)


34276

7.81 ct Kyanite from Brazil (PDF)


33854
8.37 ct Kyanite from Brazil
8.37 ct Kyanite from Brazil (PDF)


33849

18.43 ct Kyanite from Brazil (PDF)


34352

4.44 ct Kyanite from Kenya (PDF)


33835
2.77 ct Kyanite from Madagascar
2.77 ct Kyanite from Madagascar (PDF)


35630

15.30 ct Kyanite from Myanmar (PDF)


33839

3.68 ct Kyanite from Nepal (PDF)


34742
5.78 ct Kyanite from Nepal
5.78 ct Kyanite from Nepal (PDF)


34964

3.85 ct Kyanite from Switzerland (PDF)


34993
15.81 ct Kyanite from Tanzania
15.81 ct Kyanite from Tanzania (PDF)


35283
3.55 ct Kyanite from Zimbabwe
3.55 ct Kyanite from Zimbabwe (PDF)


35287

5.05 ct Kyanite from Zimbabwe (PDF)


35579
3.51 ct Leadhillite from Namibia
3.51 ct Leadhillite from Namibia (PDF)


35442

1.52 ct Leucite from Italy (PDF)


35411
12.93 ct Magnesite from Brazil
12.93 ct Magnesite from Brazil (PDF)


34483

3.51 ct Manganotantalite from Mexico (PDF)


35448
5.51 ct Manganotantalite from Mozambique
5.51 ct Manganotantalite from Mozambique (PDF)


35449
9.90 ct Manganotantalite from Pakistan
9.90 ct Manganotantalite from Pakistan (PDF)


35453
4.46 ct Mimetite from Namibia
4.46 ct Mimetite from Namibia (PDF)


35456
1.34 ct Montebrasite from Brazil
1.34 ct Montebrasite from Brazil (PDF)


35836
3.58 ct Musgravite (Magnesiotaaffeite) (Locality not stated)
3.58 ct Musgravite (Magnesiotaaffeite), locality not stated (PDF)


35190

4.54 ct Natrolite from the United States (PDF)