GIA Gem Project
Various gems
(Olivine - Rutile)


Peridot
Photo by Robert Weldon/GIA, courtesy Dr E. J. Gübelin Collection
GIA Collection 33884
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.

33884

18.72 ct Olivine (Forsterite) – Peridot from Egypt (PDF)


33885
MF - 19.46 ct Peridot from Egypt
19.46 ct Olivine (Forsterite) – Peridot from Egypt (PDF)


33879

28.99 ct Olivine (Forsterite) – Peridot from Myanmar (PDF)


35195

5.92 ct Olivine (Forsterite) – Peridot from the United States (PDF)


35196

15.94 ct Periclase from the United States (PDF)


35474
11.14 ct Petalite from Brazil
11.14 ct Petalite from Brazil (PDF)


34291
16.48 ct Petalite from Brazil
16.48 ct Petalite from Brazil (PDF)


35463

41.12 ct Petalite from Brazil (PDF)


35461
17.60 ct Petalite (Locality not stated)
17.60 ct Petalite, locality not stated (PDF)


35633

2.92 ct Pezzottaite from Madagascar (PDF)


35636
4.15 ct Pezzottaite from Madagascar
4.15 ct Pezzottaite from Madagascar (PDF)


34089
33.15 ct Phenakite from Brazil
33.15 ct Phenakite from Brazil (PDF)


34094
15.53 ct Phenakite from Russia
15.53 ct Phenakite from Russia (PDF)


34861

5.81 ct Phenakite from Sri Lanka (PDF)


35478

16.48 ct Phosgenite from Morocco (PDF)


35466
25.56 ct Phosgenite from Morocco
25.56 ct Phosgenite from Morocco (PDF)


35481
5.12 ct Phosphophyllite from Bolivia
5.12 ct Phosphophyllite from Bolivia (PDF)


35623
31.53 ct Powellite from India
31.53 ct Powellite from India (PDF)


35486

8.56 ct Prehnite from Australia (PDF)


35485
10.55 ct Prehnite from Australia
10.55 ct Prehnite from Australia (PDF)


35468
13.61 ct Prehnite (Locality not stated)
13.61 ct Prehnite, locality not stated (PDF)


35208

11.10 ct Prehnite from the United States (PDF)


35469
12.07 ct Proustite from Chile
12.07 ct Proustite from Chile (PDF)


34414

4.52 ct Pyroxene (Diopside) from Madagascar (PDF)


34560

8.34 ct Pyroxene (Diopside) from Myanmar (PDF)


34565
14.19 ct Kornerupine from Myanmar
14.19 ct Pyroxene (Diopside) from Myanmar (PDF)


34847

13.55 ct Pyroxene (Diopside) from Sri Lanka (PDF)


35381

3.70 ct Pyroxene (Diopside) from the United States (PDF)


35385

0.91 ct Pyroxene (Diopside) - Chrome Diopside from Kenya (PDF)


34413
9.15 ct Pyroxene (Enstatite) from Madagascar
9.15 ct Pyroxene (Enstatite) from Madagascar (PDF)


34561
1.50 ct Pyroxene (Enstatite) from Myanmar
1.50 ct Pyroxene (Enstatite) from Myanmar


34846

2.90 ct Pyroxene (Enstatite) from Sri Lanka (PDF)


34826

6.32 ct Pyroxene (Enstatite) from Sri Lanka (PDF)


34819

9.98 ct Pyroxene (Enstatite) from Sri Lanka (PDF)


34827

12.05 ct Pyroxene (Enstatite) from Sri Lanka (PDF)


34820

16.31 ct Pyroxene (Enstatite) from Sri Lanka (PDF)


35004
13.38 ct Pyroxene (Enstatite) from Tanzania
13.38 ct Pyroxene (Enstatite) from Tanzania (PDF)


34034
6.47 ct Hypersthene from India
6.47 ct Pyroxene (Hypersthene) from India (PDF)


35584
8.54 ct Pyroxmangite from Brazil
8.54 ct Pyroxmangite from Brazil (PDF)


34442

30.23 ct Quartz from Mexico (PDF)


33422
56.19 ct Quartz
56.19 ct Quartz, locality not stated (PDF)


33388
3.76 ct Quartz (Amethyst) from Brazil
23.76 ct Quartz – Amethyst from Brazil (PDF)


35264

10.95 ct Quartz – Amethyst from Zimbabwe (PDF)


35001
4.94 ct Quartz - Chalcedony (Chrysoprase) from Tanzania
4.94 ct Quartz – Chalcedony (Chrysoprase) from Tanzania (PDF)


33423
26.57 ct Quartz (Citrine) (Locality not stated)
26.57 ct Quartz – Citrine, locality not stated (PDF)


35299

8.10 ct Quartz – Citrine from Zimbabwe (PDF)


35257

11.11 ct Quartz – Citrine from Zimbabwe (PDF)


33385
29.04 ct Quartz (Rose Quartz)
29.04 ct Quartz – Rose Quartz, locality not stated (PDF)


35019
5.21 ct Rhodochrosite from South Africa
5.21 ct Rhodochrosite from South Africa (PDF)


34709

11.32 ct Rhodochrosite from South Africa (PDF)


34679

17.77 ct Rhodochrosite from South Africa (PDF)


35491
4.62 ct Rhodochrosite from the United States
4.62 ct Rhodochrosite from the United States (PDF)


35209

9.06 ct Rhodochrosite from the United States (PDF)


35212

10.50 ct Rhodochrosite from the United States (PDF)


35496
2.09 ct Rhodonite from Australia
2.09 ct Rhodonite from Australia (PDF)


34855

5.64 ct Rutile from Sri Lanka (PDF)