Visualization of the internal structure of freshwater cultured pearls by computerized x-ray microtomography

U. Wehrmeister; H. Goetz; D. E. Jacob; A. Soldati; W. Xu; H. Duschner; W Hofmeister

doi:10.15506/JoG.2008.31.1.15

Visualization of the internal structure of freshwater cultured pearls by computerized x-ray microtomography

U. Wehrmeister, H. Goetz, D. E. Jacob, A. Soldati, W. Xu, H. Duschner, W Hofmeister

Research output: Contribution to journal › Article › peer-review

Abstract

Computerized three-dimensional X-ray microtomography is capable of revealing the internal structure and some of the material properties of pearls at high resolution, and is thus a more useful tool in pearl testing than conventional X-ray radiography. Differences in transparency to X-rays (radiodensities) can be detected and speed up the process of locating different CaC0₃-polymorphs in the pearl. When combined with micro-Raman spectroscopy, vaterite-containing areas can be identified.

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Journal of Gemmology
Volume	31
Issue number	1/2
DOIs	https://doi.org/10.15506/JoG.2008.31.1.15
Publication status	Published - 2008
Externally published	Yes

Keywords

aragonite
cultured pearls
microtomography
pearl testing
Raman spectroscopy
vaterite

Access to Document

10.15506/JoG.2008.31.1.15

Cite this

@article{0aa8712b8b6b4fb798952c8bb532ed61,

title = "Visualization of the internal structure of freshwater cultured pearls by computerized x-ray microtomography",

abstract = "Computerized three-dimensional X-ray microtomography is capable of revealing the internal structure and some of the material properties of pearls at high resolution, and is thus a more useful tool in pearl testing than conventional X-ray radiography. Differences in transparency to X-rays (radiodensities) can be detected and speed up the process of locating different CaC0₃-polymorphs in the pearl. When combined with micro-Raman spectroscopy, vaterite-containing areas can be identified.",

keywords = "aragonite, cultured pearls, microtomography, pearl testing, Raman spectroscopy, vaterite",

author = "U. Wehrmeister and H. Goetz and Jacob, \{D. E.\} and A. Soldati and W. Xu and H. Duschner and W Hofmeister",

year = "2008",

doi = "10.15506/JoG.2008.31.1.15",

language = "English",

volume = "31",

pages = "15--21",

journal = "Journal of Gemmology",

issn = "1355-4565",

publisher = "Gem-A, The Gemmological Association of Great Britain",

number = "1/2",

}

TY - JOUR

T1 - Visualization of the internal structure of freshwater cultured pearls by computerized x-ray microtomography

AU - Wehrmeister, U.

AU - Goetz, H.

AU - Jacob, D. E.

AU - Soldati, A.

AU - Xu, W.

AU - Duschner, H.

AU - Hofmeister, W

PY - 2008

Y1 - 2008

N2 - Computerized three-dimensional X-ray microtomography is capable of revealing the internal structure and some of the material properties of pearls at high resolution, and is thus a more useful tool in pearl testing than conventional X-ray radiography. Differences in transparency to X-rays (radiodensities) can be detected and speed up the process of locating different CaC0₃-polymorphs in the pearl. When combined with micro-Raman spectroscopy, vaterite-containing areas can be identified.

AB - Computerized three-dimensional X-ray microtomography is capable of revealing the internal structure and some of the material properties of pearls at high resolution, and is thus a more useful tool in pearl testing than conventional X-ray radiography. Differences in transparency to X-rays (radiodensities) can be detected and speed up the process of locating different CaC0₃-polymorphs in the pearl. When combined with micro-Raman spectroscopy, vaterite-containing areas can be identified.

KW - aragonite

KW - cultured pearls

KW - microtomography

KW - pearl testing

KW - Raman spectroscopy

KW - vaterite

U2 - 10.15506/JoG.2008.31.1.15

DO - 10.15506/JoG.2008.31.1.15

M3 - Article

SN - 1355-4565

VL - 31

SP - 15

EP - 21

JO - Journal of Gemmology

JF - Journal of Gemmology

IS - 1/2

ER -

Visualization of the internal structure of freshwater cultured pearls by computerized x-ray microtomography

Abstract

Keywords

Access to Document

Fingerprint

Cite this