1988 – 1299

​

Lapis lazuli - gem

A rock, not a mineral, formed from more than one mineral

1973 – 558

​

1973 – 559

1973 – 560

1973– 561

Chrysoprase

Agate

Opal

Rhodonite

1974– 580

1995– 1429

1995– 1430 

Opal

SiO₂·nH₂O

​

Light Opal

Black Opal

​

Y&T - 4422

Y&T - 4423

Rhodonite

CaF₂

1978 – 31

​Semi-precious stones

​

1977 - 1538

1537-1539

​

 1977 - 1539

 1989 - 2198

2 val

 1989 - 2199

​

Topaz

Al₂SiO₄(F,OH)₂

​

​

Beryl - Aquamarine

Al₂Be₃(Si₆O₁₈)

​Tourmaline

Na(Li,Al)₃(Al)₆

[(OH)₄/(BO₃)₃/Si₆O₁₈]

​

Quartz - Amethist

SiO₂

1998 - 2660

3 val

​

 1998 - 2661 

Chrysoberyl

Alexandrite

BeAl₂O₄

 Chrysoberyl

Alexandrite - Cat-eye

BeAl₂O₄

Tourmaline - Indicolite

Na(Li,Al)₃(Al)₆

[(OH)₄/(BO₃

​

 2000 - 2743 - Multi

Diamond + various minerals and gems

Brasilianite 

NaAl₃(PO₄(OH)₄

Topaz

Al₂SiO₄(F,OH)₂

 2001-2828 a

2001-2828 b

Various minerals and gems

​

Topaz 

Al₂SiO₄(F,OH)₂

X₃Y₂(SiO₄)₃

 2009 - 3067 - BF

​

​

World Social Forum

Various gems

​

1998 - 1775

1775-1780

​

 1998 - 1776 

 1998 - 1777 

 1998 - 1778  

​

Beryl - Acquamarine

Be₃Al₂Si₆O₁₈

​

Quartz Cat's eye

SiO₂

Rough

Malachite

Cu₂CO₃(OH)₂

Rough

Turquoise

CuAl₆(PO₄)₄(OH)₈·4H₂O

Rough

1436-1440

​

  1992 - 1440 

Sodalite

Na₈Al₆Si₆O₂₄Cl₂

Slab

​

Garnet - Grossular

Ca₃Al₂(SiO₄)₃

Xls

​

1996 – 1179 b

1179 a - d 

​

​

Lapis lazuli - gem

A rock, not a mineral, formed from more than one mineral

​

1998 – 930 d

930 a-i

​

 1998 – 930 f 

Euclase

BeAlSiO₄(OH)

Rough - Xls

Crysoberyl

BeAl₂O₄

Rough

Tourmaline  Indicolite

Na(Li,Al)₃Al₆Si₆O₁₈

(BO₃)₃(OH)₄

Rough

1974 – 1605

1604-1609

​

 1974 – 1606

Quartz - Smokey

SiO₂

Topaz

Al₂SiO₄(F,OH)₂

Beryl Aquamarine

Be₃Al₂(Si₆O₁₈)

2020 - n.c.

Y&T - 5149

​

​

Jet

Mineraloid

​

2003 – 1647

1647-1650

​

2003 – 1648

2003 – 1649

2003 – 1650 

White Opal

SiO₂·nH₂O

Brown Precious Opal

SiO₂·nH₂O

Fire Opal

SiO₂·nH₂O

Yellow Precious Opal

SiO₂·nH₂O 

2003 – 2782 - Multi

2003 -  2782 c

2782 a- f

2003 -  2782 e

Various minerals and gems

Black Opal

SiO₂·nH₂O

Lapis lazuli - gem

A rock, not a mineral, formed from more than one mineral

2002 – 3216

2002 – 3217

​

Gemstones of the months

​

Gemstones of the months

​

2002 – 3216 a

​

 2002 – 3217 b

Garnet

General formula

X₃Y₂(SiO₄)₃

Quartz - Amethist

Beryl Aquamarine

Be₃Al₂(Si₆O₁₈)

Sardonix

2002 – 3217 d

​

Opal

SiO₂·nH₂O

Topaz

Al₂SiO₄(F,OH)₂

Turquoise

CuAl₆(PO₄)₄(OH)₈·4H₂O

​

​

 2002 – 3218d  

2002 – 3218e

Variuos minerals and gems

Opal

SiO₂·nH₂O

Turquoise

CuAl₆(PO₄)₄(OH)₈·4H₂O

Rough

2012 - Multi

2012 -  n.c.

​

Diamond and Topaz

​

1997 - 1706

1706-1708 

​

 1997 - 1707

1997  - 1708

Jasper

Chrysocolla

(Cu,Al)₂H₂Si₂O₅(OH)₄

·n(H₂O)

Agate - Geode

SiO₂

1997 - 1709 - BF

​

Banded Agate

​

Agate

​

Banded Agate

3 years to go

​

Agate

1999 - Multi

​

Various gems

​

1848-1850

1999 - 1849

1999 – 1851

Chrysoprase - SiO₂

1 years to go

Smoky quartz

Blu Opal

SiO₂·nH₂O

Javan Jade

 2000 - 1888

1888-1891 

​

2000 - 1890 

Prehenite

Ca₂Al₂Si₃O₁₀(OH)₂

Chalcedony

SiO₂

Obsidian

Glass

​

Jasperized Limestone

​

2001 - Multi + label

​

Various gems

​

2001 - 1970

1970-1973 

​

2001 - 1971

2001 - 1972

 2001 - label

Rose quartz

SiO₂

Brecciated Jasper

Malachite

Cu₂(CO₃)(OH)₂

Gems

1981 - 795

795-797

Chrysocolle

of Eilat

(Cu,Al)₂H₂Si₂O₅(OH)₄

·n(H₂O)

​

2012 - n.c

Y&T - 2176-2179

​

2012 - n.c.

2012 - n.c.

​

2012 - n.c.

​

Carnelian

SiO₂

Topaz

​

Tourquoise

CuAl₆(PO₄)₄(OH)₈·4H₂O

​

2012 - n.c

2012 - n.c.

2012 - n.c.

2012 - n.c.

Lazurite - Lapislazuli

Quartz

Zircon

Quartz Amethist

SiO₂

​

2012 - n.c

​

2012 - n.c.

2012 - n.c.

2012 - n.c.

Agate

Beryl Aquamarine

Be₃Al₂(Si₆O₁₈)

Jasper

​

2013 - n.c - 5val

Y&T - 3372

​

Onix​

Cameo Brooch with
Venus Marina

1977 - 105

105 -112 

​

1977 - 106

1977 - 107

1977 - 108

Quartz  Amethyst

SiO₂

Agate

SiO₂

Tourmaline

(Ca,K,Na,[])

(Al,Fe,Li,Mg,M)₃

(Al,Cr, Fe,V)₆(BO₃)₃
(Si,Al,B)₆O₁₈(OH,F)₄

Beryl  Acquamarine

Be₃Al₂(Si₆O₁₈)

1977 - 109

1977 - 110

1977 - 111

1977 - 112

​

Garnet – Rodolite

Garnet - Grossularite

Tsavorite

Ca₃Al₂Si₃O₁₂

 2013 - n.c. - Multi

Y&T - 5188-5190

2013 - n.c. - Multi

Y&T -5218 - 5220

​

​

​

2013 - n.c.

2013 - n.c. 

 2013 - n.c.

Beryl v. Aquamarine

Euclase​

Rainbow garnet​

General formula

X₃Y₂(SiO₄)₃

2013 - n.c.

Y&T -5218 - 5220

​

2013 - n.c.

Y&T -5219

​

2013 - n.c.

Y&T -5220

​

Rhodochrosite

Zoisite Tanzanite

Y&T - BF631

​

 2013 - BF

 2013 - BF

Agate

Agate​

​

Agate​

​

1980 – 370

 370-37

​

 1980 – 371

1980 – 372

1980 – 373

Agate

SiO₂ 

Sunstone

(Ca,Na)((AI,Si)₂Si₂O₈)

Quartz Smokey

SiO₂

Kyanite

Al₂SiO₅

2016 – n.c

Y&T - BF 620

​

​

Lapis lazuli - gem

A rock, not a mineral, formed from more than one mineral

​

​

2001 - Z469 

1 val 

​

Jewel

Quartz - Amethist

SiO₂

2003 - 1021 k

20 val

2012 – n.c

Y&T - 1328-1331

​

Gems

&

Jewellery

Olivine Peridot 

(Mg,Fe)₂SiO₄ 

1978 – 394

394-398

​

1978 – 396 

Beryl Morganite

Quartz Amethist

SiO₂

Garnet

General formula

X₃Y₂(SiO₄)₃

1978 – 397 

​

 1978 – 398 ​

​

​Quartz Citrine

SiO₂ 

Topaz  Blue

Al₂SiO₄(F,OH)₂ 

​

1971- 3920

3783-90

​

Jewel

Quartz - Amethist

SiO₂

​

2017 - n.c.

Y&T  - 7881

​

Jewel

Tourmaline

​

​

1997 - n.c

Y&T - 585-588

​

Gems-Jewel

Arabian tales

2009 - C96 a-d -

Multi PA

 Y&T - BF 119

​

​

Suglite  Jasper  Garnet Rodochrosite

​

1961 – 278

 14 val

1961 – 279

1961 – 280

Topaz

Al₂SiO₄(F,OH)₂

Tourmaline

Beryl Heliodor

Be₃Al₂Si₆O₁₈

1979 – 433

1979 – 434

1979 – 435

1979 – 436

Silver Topaz

Al₂SiO₄(F,OH)₂

Beryl Aquamarine

Be₃Al₂Si₆O₁₈

Malachite

Cu₂(CO₃)(OH)

Quartz  Amethyst

SiO₂

1976 - 510a - BF

507 - 510

​

Various gems

​

Chrysoberyl Cats-eye

BeAl₂O₄

​

2021– nc.

 Y&T - 2297

2021– nc.

 Y&T - 2298

​

2021– nc.

 Y&T - 2999

2021– nc

Spinel

MgAl
₂O
₄

Beryl Aquamarine

Be₃Al₂Si₆O₁₈

Zircon

Sinhalite

2021– nc.

Y&T - 2301

2021– nc.

Y&T - 2302 

2021– nc.

 Y&T - 2303

2021– nc.

 Y&T - 2304

Silver Topaz

​

Taaffeite

Chrysoberyl

v. Alexandrite

Andalusite

​

Y&T - 2305

​

​

Moonstone

​

​

1986 - 312

311-314

​

Zoisite Tanzanite

(Ca₂Al₃(SiO₄)(Si₂O₇)

O(OH)

 2004 – 2328 a - Multi

2004 – 2327

​

Mining gemstones in Tanzania

​

Semi processed Gemstones

2004 – 2329 - BF

2004 – 2329

​

 Chrysoberyl Alexandrite

BeAl₂O₄

​

Zoisite Tanzanite

(Ca₂Al₃(SiO₄)(Si₂O₇)

O(OH)

Mining in Tanzania

​

Unprocessed gemstones

​

2011 - 443b

​

2012 - n.c. 

2014 - n.c. 

Y&T - 687

 2015- n.c. 

Y&T - 727 

Zircon

ZrSiO₄

Diopside Cut

CaF₂

​

Beryl Cut

​

​

2016- n.c

Y&T - 762 

​

2017 - n.c.

Y&T - 796

 Y&T - 846

2019 - n.c.

Y&T  - 885

Titanite

Sphene

discredited name

​

​

​

2020- n.c.

Y&T - 920

​

 Y&T - 974

​

​

​

Amethist

​

​

 1972 - 626

624-627

​

Zircon

ZrSiO₄

2015 - n.c. 

Y&T - 3736

​

2015 - n.c. 

2019 - n.c. 

 2019 - n.c.

Sepiolite

​Mg₄Si₆O₁₅(OH)₂ · 6H₂O

​

Agate

​SiO₂

​

Chalcedony

2008 – 864-871

Y&T - 292-299

​

2008 – 865 

2008 – 866 

2008 – 867 

​

Onix

​

Onix

Onix

Onix

2008 – 868 

2008 – 869

2008 –870 

 2008 – 871

​

Onix

​

Onix

Onix

Onix 

2008 – 872 - BF

Y&T - BF 51

​

​

Onix

​

***

1980 – 414

414-428

​

 1980 - 415

 1980 - 416

 1980 - 417

​

Beryl  Morganite

Be₃Al₂(Si₆O₁₈)

​

​

Quartz Amethist

SiO₂

Garnet

​

Quartz Citrine

SiO₂

 1980 - 418

***

2000 - 909

909 - 912

​

Topaz  Blue

Al₂SiO₄(F,OH)₂

​

Agate

SiO₂

Beryl  Acquamarine

Be₃Al₂(Si₆O₁₈)