A look at a unique matching set of emerald and brown matrix cabochons from the Muzo mine in Colombia.
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Examination of a Pinctada maculata pearl reveals an interesting columnar calcite surface structure.
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Examination of natural pearls from Kuwait reveals one with a suspected metal oxide at the core.
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A report from GIA’s Bangkok laboratory on freshwater bead cultured pearls with saltwater bead nuclei.
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A close look at inclusions in a variety of “rabbit hair” quartz samples.
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An overview of the treatment process of ruby and pink sapphire from Greenland and its effect on inclusion scenes and chemistry.
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A newly developed treatment creates a phantom structure in opal visually similar to natural phantom opal.
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After a slow start, the spring 2023 auction season ends with multiple broken records.
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GIA president and CEO Susan Jacques receives the American Gem Society’s highest honor.
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past gems & gemology issues
Summer 2023
Volume 59, Issue 2
Spring 2023
Volume 59, Issue 1
Winter 2022
Volume 58, Issue 4
Fall 2022
Volume 58, Issue 3
Summer 2022
Volume 58, Issue 2
Spring 2022
Volume 58, Issue 1
Winter 2021
Volume 57, Issue 4
Fall 2021
Volume 57, Issue 3
Summer 2021
Volume 57, Issue 2
Spring 2021
Volume 57, Issue 1
Winter 2020
Volume 56, Issue 4
Fall 2020
Volume 56, Issue 3
Summer 2020
Volume 56, Issue 2
Spring 2020
Volume 56, Issue 1
Winter 2019
Volume 55, Issue 4
Fall 2019
Volume 55, Issue 3
Summer 2019
Volume 55, Issue 2
Spring 2019
Volume 55, Issue 1
Winter 2018
Volume 54, Issue 4
Fall 2018
Volume 54, Issue 3
Summer 2018
Volume 54, Issue 2
Spring 2018
Volume 54, Issue 1
Winter 2017
Volume 53, Issue 4
Fall 2017
Volume 53, Issue 3
Summer 2017
Volume 53, Issue 2
Spring 2017
Volume 53, Issue 1
Winter 2016
Volume 52, Issue 4
Fall 2016
Volume 52, Issue 3
Summer 2016
Volume 52, Issue 2
Spring 2016
Volume 52, Issue 1
Winter 2015
Volume 51, Issue 4
Fall 2015
Volume 51, Issue 3
Summer 2015
Volume 51, Issue 2
Spring 2015
Volume 51, Issue 1
Winter 2014
Volume 50, Issue 4
Fall 2014
Volume 50, Issue 3
Summer 2014
Volume 50, Issue 2
Spring 2014
Volume 50, Issue 1
Winter 2013
Volume 49, Issue 4
Fall 2013
Volume 49, Issue 3
Summer 2013
Volume 49, Issue 2
Spring 2013
Vol. 49, No. 1
Winter 2012
Volume 48, Issue 4
Fall 2012
Volume 48, Issue 3
Summer 2012
Volume 48, Issue 2
Spring 2012
Volume 48, Issue 1
Winter 2011
Volume 47, Issue 4
Fall 2011
Volume 47, Issue 3
Summer 2011
Volume 47, Issue 2
Spring 2011
Volume 47, Issue 1
Winter 2010
Volume 46, Issue 4
Fall 2010
Volume 46, Issue 3
Summer 2010
Volume 46, Issue 2
Spring 2010
Volume 46, Issue 1
Winter 2009
Volume 45, Issue 4
Fall 2009
Volume 45, Issue 3
Summer 2009
Volume 45, Issue 2
Spring 2009
Volume 45, Issue 1
Winter 2008
Volume 44, Issue 4
Fall 2008
Volume 44, Issue 3
Summer 2008
Volume 44, Issue 2
Spring 2008
Volume 44, Issue 1
Winter 2007
Volume 43, Issue 4
Fall 2007
Volume 43, Issue 3
Summer 2007
Volume 43, Issue 2
Spring 2007
Volume 43, Issue 1
Winter 2006
Volume 42, Issue 4
Fall 2006
Volume 42, Issue 3
Summer 2006
Volume 42, Issue 2
Spring 2006
Volume 42, Issue 1
Winter 2005
Volume 41, Issue 4
Fall 2005
Volume 41, Issue 3
Summer 2005
Volume 41, Issue 2
Spring 2005
Volume 41, Issue 1
Winter 2004
Volume 40, Issue 4
Fall 2004
Volume 40, Issue 3
Summer 2004
Volume 40, Issue 2
Spring 2004
Volume 40, Issue 1
Winter 2003
Volume 39, Issue 4
Fall 2003
Volume 39, Issue 3
Summer 2003
Volume 39, Issue 2
Spring 2003
Volume 39, Issue 1
Winter 2002
Volume 38, Issue 4
Fall 2002
Volume 38, Issue 3
Summer 2002
Volume 38, Issue 2
Spring 2002
Volume 38, Issue 1
Winter 2001
Volume 37, Issue 4
Fall 2001
Volume 37, Issue 3
Summer 2001
Volume 37, Issue 2
Spring 2001
Volume 37, Issue 1
Winter 2000
Volume 36, Issue 4
Fall 2000
Volume 36, Issue 3
Summer 2000
Volume 36, Issue 2
Spring 2000
Volume 36, Issue 1
Winter 1999
Volume 35, Issue 4
Fall 1999
Volume 35, Issue 3
Summer 1999
Volume 35, Issue 2
Spring 1999
Volume 35, Issue 1
Winter 1998
Volume 34, Issue 4
Fall 1998
Volume 34, Issue 3
Summer 1998
Volume 34, Issue 2
Spring 1998
Volume 34, Issue 1
Winter 1997
Volume 33, Issue 4
Fall 1997
Volume 33, Issue 3
Summer 1997
Volume 33, Issue 2
Spring 1997
Volume 33, Issue 1
Winter 1996
Volume 32, Issue 4
Fall 1996
Volume 32, Issue 3
Summer 1996
Volume 32, Issue 2
Spring 1996
Volume 32, Issue 1
Winter 1995
Volume 31, Issue 4
Fall 1995
Volume 31, Issue 3
Summer 1995
Volume 31, Issue 2
Spring 1995
Volume 31, Issue 1
Winter 1994
Volume 30, Issue 4
Fall 1994
Volume 30, Issue 3
Summer 1994
Volume 30, Issue 2
Spring 1994
Volume 30, Issue 1
Winter 1993
Volume 29, Issue 4
Fall 1993
Volume 29, Issue 3
Summer 1993
Volume 29, Issue 2
Spring 1993
Volume 29, Issue 1
Winter 1992
Volume 28, Issue 4
Fall 1992
Volume 28, Issue 3
Summer 1992
Volume 28, Issue 2
Spring 1992
Volume 28, Issue 1
Winter 1991
Volume 27, Issue 4
Fall 1991
Volume 27, Issue 3
Summer 1991
Volume 27, Issue 2
Spring 1991
Volume 27, Issue 1
Winter 1990
Volume 26, Issue 4
Fall 1990
Volume 26, Issue 3
Summer 1990
Volume 26, Issue 2
Spring 1990
Volume 26, Issue 1
Winter 1989
Volume 25, Issue 4
Fall 1989
Volume 25, Issue 3
Summer 1989
Volume 25, Issue 2
Spring 1989
Volume 25, Issue 1
Winter 1988
Volume 24, Issue 4
Fall 1988
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Summer 1988
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Spring 1988
Volume 24, Issue 1
Winter 1987
Volume 23, Issue 4
Fall 1987
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Summer 1987
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Winter 1986
Volume 22, Issue 4
Fall 1986
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Summer 1986
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Volume 22, Issue 1
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Volume 20, Issue 4
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Winter 1983
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Fall 1983
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Summer 1983
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Volume 19, Issue 1
Winter 1982
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Fall 1982
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Summer 1982
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Spring 1982
Volume 18, Issue 1
Winter 1981
Volume 17, Issue 4
Fall 1981
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Summer 1981
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Volume 17, Issue 1
Winter 1980
Volume 16, Issue 12
Fall 1980
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Summer 1980
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Winter 1979
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Fall 1979
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Summer 1979
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Winter 1978
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Fall 1978
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Summer 1978
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Winter 1977
Volume 15, Issue 12
Fall 1977
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Summer 1977
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Winter 1976
Volume 15, Issue 8
Fall 1976
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Summer 1976
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Winter 1975
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Fall 1975
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Summer 1975
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Winter 1974
Volume 14, Issue 12
Fall 1974
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Summer 1974
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Spring 1974
Volume 14, Issue 9
Winter 1973
Volume 14, Issue 8
Fall 1973
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Summer 1973
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Winter 1972
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Fall 1972
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Summer 1972
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Spring 1972
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Winter 1971
Volume 13, Issue 12
Fall 1971
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Summer 1971
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Spring 1971
Volume 13, Issue 9
Winter 1970
Volume 13, Issue 8
Fall 1970
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Summer 1970
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Spring 1970
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Winter 1969
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Fall 1969
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Summer 1969
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Spring 1969
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Winter 1968
Volume 12, Issue 12
Fall 1968
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Summer 1968
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Winter 1967
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Fall 1967
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Summer 1967
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Winter 1966
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Fall 1966
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Summer 1966
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Winter 1965
Volume 11, Issue 12
Fall 1965
Volume 11, Issue 11
Summer 1965
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Volume 11, Issue 9
Winter 1964
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Fall 1964
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Summer 1964
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Volume 10, Issue 12
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Winter 1959
Volume 9, Issue 12
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Volume 9, Issue 9
Winter 1958
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Fall 1958
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Summer 1958
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Winter 1957
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Winter 1956
Volume 8, Issue 12
Fall 1956
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Summer 1956
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Spring 1956
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Winter 1955
Volume 8, Issue 8
Fall 1955
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Summer 1955
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Spring 1955
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Winter 1954
Volumt 8, Issue 4
Fall 1954
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Summer 1954
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Spring 1954
Volume 8, Issue 1
Winter 1953
Volume 7, Issue 12
Fall 1953
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Summer 1953
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Spring 1953
Volume 7, Issue 9
Winter 1952
Volume 7, Issue 8
Fall 1952
Volume 7, Issue 7
Summer 1952
Volume 7, Issue 6
Spring 1952
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Winter 1951
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Fall 1951
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Summer 1951
Volumt 7, Issue 2
Spring 1951
Volume 7, Number 1
Winter 1950
Volume 6, Issue 12
Fall 1950
Volume 6, Issue 11
Summer 1950
Volume 6, Issue 10
Spring 1950
Volume 6, Issue 9
Winter 1949
Volume 6, Issue 6
Fall 1949
Volume 6, Issue 7
Summer 1949
Volume 6, Issue 6
Spring 1949
Volume 6, Issue 5
Winter 1948
Volume 6, Issue 4
Fall 1948
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Summer 1948
Volume 6, Issue 2
Spring 1948
Volume 6, Issue 1
Winter 1947
Volume 5, Issue 12
Fall 1947
Volume 5, Issue 11
Summer 1947
Volume 5, Issue 10
Spring 1947
Volume 5, Issue 9
Winter 1946
Volume 5, Issue 8
Fall 1946
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Summer 1946
Volume 5, Issue 6
Spring 1946
Volume 5, Issue 5
Winter 1945
Volume 5, Issue 4
Fall 1945
Volume 5, Issue 3
Summer 1945
Volume 5, Issue 2
Spring 1945
Volume 5, Issue 1
Winter 1944
Volume 4, Number 12
Fall 1944
Volume 4, Issue 11
Summer 1944
Volume 4, Issue 10
Spring 1944
Volume 4, Issue 9
Winter 1943
Volume 4, Issue 8
Fall 1943
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Summer 1943
Volume 4, Issue 6
Spring 1943
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Winter 1942
Volume 4, Issue 4
Fall 1942
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Summer 1942
Volume 4, Issue 2
Spring 1942
Volume 4, Issue 1
Winter 1941
Volume 3, Issue 12
Fall 1941
Volume 3, Issue 11
Summer 1941
Volume 3, Issue 10
Spring 1941
Volume 3, Issue 9
Winter 1940
Volume 3, Issue 8
Fall 1940
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Summer 1940
Volume 3, Issue 6
Spring 1940
Volume 3, Issue 5
Winter 1939
Volume 3, Issue 4
Fall 1939
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Summer 1939
Volume 3, Issue 2
Spring 1939
Volume 3, Issue 1
Winter 1938
Volume 2, Issue 12
Fall 1938
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Summer 1938
Volume 2, Issue 10
Spring 1938
Volume 2, Issue 9
Winter 1937
Volume 2, Issue 8
Fall 1937
Volume 2, Issue 7
Summer 1937
Volume 2, Issue 6
Spring 1937
Voume 2, Issue 5
Winter 1936
Volume 2, Issue 4
Fall 1936
Volume 2, Issue 3
Summer 1936
Volume 2, Issue 2
Spring 1936
Volume 2, Issue 1
Winter 1935
(November-December)
Volume 1, Issue 12
Fall 1935
(September-October)
Volume 1, Issue 11
Summer 1935
(July-August)
Volume 1, Issue 10
Summer 1935
(May-June)
Volume 1, Issue 9
Spring 1935
(March-April)
Volume 1, Issue 8
Winter 1935
(January-February)
Volume 1, Issue 7
Winter 1934
(November-December)
Volume 1, Issue 6
Fall 1934
(September-October)
Volume 1, Issue 5
Summer 1934
(July-August)
Volume 1, Issue 4
Summer 1934
(May-June)
Volume 1, Issue 3
Spring 1934
(March-April)
Volume 1, Issue 2
Winter 1934
(January)
Volume 1, Issue 1
