Franz L., Tay Thye Sun, Wirth R., de Capitani C. and Loke Hui Ying, 2016. Violet-to-blue ‘Nuummite’ from Simiuttat, Greenland: Origin of iridescence and conditions of formation. Journal of Gemmology, 35(4), 330–339, http://dx.doi.org/10.15506/JoG.2016.35.4.330.

• Electron microprobe (EPMA) analyses of orthoamphibole and analytical electron microprobe (AEM) analyses of orthoamphibole lamellae in violet-to-blue ‘Nuummite’ from Greenland orthoamphibole and analytical electron microprobe (AEM) analyses of orthoamphibole lamellae in violet-to-blue ‘Nuummite’ from Greenland
• Equilibrium phase diagram
• Mineral reactions for violet-to-blue ‘Nuummite’ from Greenland

Additional plots to accompany Figure 8 of the article:

Wang H.A.O., Krzemnicki M.S., Chalain J.P., Lefèvre P., Zhou W. and Cartier L.E., 2016. Simultaneous high sensitivity trace-element and isotopic analysis of gemstones using laser ablation inductively coupled plasma time-of-flight mass spectrometry. Journal of Gemmology, 35(3), 212–223, http://dx.doi.org/10.15506/JoG.2016.35.3.212.

JoG2016_35_3 Depository Wang

Additional photos to accompany the article:

Bui T.N., Deliousi K., Malik T.K. and De Corte K., 2015. From exsolution to ‘gold sheen’: A new variety of corundum. Journal of Gemmology, 34(8), 678–691, http://dx.doi.org/10.15506/JoG.2015.34.8.678 

JoG2015_34_8 Depository Bui

Fritsch E. and Ivey J., 2018. Bumble Bee Stone: A bright yellow-to-orange and black patterned gem from West Java, Indonesia. Journal of Gemmology, 36(3), 228–238, http://doi.org/10.15506/JoG.2018.36.3.228

Additional examples of EDXRF spectra, to accompany the article:

Herzog F.A., 2015. The potential of a portable EDXRF spectrometer for gemmology. Journal of Gemmology, 34(5), 404–418, http://dx.doi.org/10.15506/jog.2015.34.5.404

JoG2014_34_5 Depository Herzog

(1) Gemmological properties, modal proportions and petrographic names of Myanmar jade samples and (2) electron microbe data, to accompany the article:

Franz L., Tay Thye Sun, Hänni H.A., de Capitani C., Thanasuthipitak T. and Atichat W., 2014. A comparative study of jadeite, omphacite and kosmochlor jades from Myanmar, and suggestions for a practical nomenclature. Journal of Gemmology, 34(3), 210–229, http://dx.doi.org/10.15506/JoG.2014.34.3.210.

JoG2014_34_3 Depository-Franz-Gem Data
JoG2014_34_3 Depository-Franz-EMPA

Video showing the internal structures within a reconstructed three-dimensional model of the Sleeping Lion pearl, to accompany the article:

Zwaan J.C., van der Marel D.M.  and Dommisse H.A., 2014. The “Sleeping Lion” Baroque Pearl: An Update. Journal of Gemmology, 34(3), 248–253, http://dx.doi.org/10.15506/jog.2014.34.3.248

JoG2014_34_3 Depository-Zwaan.avi

Video of an Ethiopian opal showing full diffraction rainbows that project above the surface of the stone, to accompany the article:

Mazzero F. and Muth A., 2014. Gem Notes: The Mirasety Ring: An Ethiopian ‘Rainbow’ Opal Set with a Hologram. Journal of Gemmology, 34(3), 205–206.

JoG2014_34_3 Depository-Mazzero.mov