Gems & Gemology Winter 2017, Vol. 53, No. 4

Data Supplement


The published versions of the authors’ microradiographs are shown here, with the original versions below them.

Microradiographs produced with an FPD (left) and an II (right)


Microradiographs produced with an FPD and an II Microradiographs produced with an FPD and an II

Figure S3. Microradiographs of sample 8, a bead-cultured saltwater pearl from Pinctada
fucata
, produced with an FPD (top) and an II (bottom). The diameter of the bead is
about 4.5 mm.




Microradiographs produced with an FPD and an II Microradiographs produced with an FPD and an II
Figure S4. Microradiographs of the center of sample 19 (a non-bead-cultured saltwater
pearl from Pinctada maxima), produced with an FPD (top) and an II (bottom); fields of
view approximately 7 mm.

Microradiographs produced with an FPD (left) and an II (right)


Microradiographs produced with an FPD and an II Microradiographs produced with an FPD and an II
Figure S5. Microradio­graphs of sample 1 (a natural saltwater pearl from Pinctada
radiata
), produced with an FPD (top) and an II (bottom); fields of view approximately
3.5 mm.

Microradiographs produced with an FPD (left) and an II (right)


Microradiographs produced with an FPD and an II Microradiographs produced with an FPD and an II
Figure S6. Microradiographs of sample 21 (a non-bead-cultured freshwater pearl from
Hyriopsis species), produced with an FPD (top) and an II (bottom); fields of view
approximately 9 mm.