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Silicified coral with transparent chalcedony filling corallite - Indonesia (359)
The fossilized corals have been quite common in the gemstone market for years. Most of the time, the material is opaque and almost all the structure / anatomy of the calcium carbonate skeletons of...
Green chalcedony with white spherulites drawing orbs - Indonesia (427)
The cabochon presented in the Figure 1 was cabbed from a rough material seen for the first time in Sainte-Marie-aux-Mines Mineral Show in 2023. The white spots on a transparent green background are...
Ajooba jasper known as conglomerate or fruit jasper - Sabalgarh marble (768)
The colorfull gemstone cabochon (Figure 1) shows a particular graphical pattern that looks like pistachio slivers in a cake. Such appearance probably gives the 'fruit jasper' name to this...
Spiderweb 'jasper' - another black and white marble (771)
The black and white spiderweb cabochon (Figure 1) represents a gemstone material which is available as cabochons, tumbled stones or even free-form ornamental gemstones. Compared to other jaspers, with its...
Zebra 'jasper' - a black and white marble (684)
The black and white zebra-striped cabochon (Figure 1) represents a gemstone material which is available as cabochons or tumbled stones. It is quite attractive with its zebra-striped pattern and its...
Apache gold - A black and shiny gold cabochon from Jerome, Arizona, USA (1942)
Apache Gold is the trade name given to an elegant black and shiny metallic gold rock found in the United Verde Mine in Jerome, Arizona, USA. The black host rock is reported to be a chlorite schist...
Spectacular bluish violet orbicular chalcedony from Ethiopia (2975)
End of 2023, three spectacular chalcedony freeform tumbled stones were seen in Paris Mineral & Gems fairs. The color is similar to that of the blue chalcedony found in Turquey and Iran as well as...
Celestine (4.22 ct) from Madagascar (3434)
Initially published as a Gem note in the Journal Of Gemmology of the Gem-A. 2020, 37(4), 344–346. http://doi.org/10.15506/JoG.2020.37.4.344 Celestine (or celestite, coelestite) is named after the...
Crocoite (0.35 ct) from Tasmania, Australia (3299)
Initially published as a Gem note in the Journal Of Gemmology of the Gem-A. 2022, 38(1), 9–11. http://doi.org/10.15506/JoG.2022.38.1.9 Crocoite (PbCrO4) was first found in Russia in 1763, later in a...
Marialite scapolite with red epidote and titanite cabochon from Ica, Peru (2596)
The material described in this report has been widely available in online stores. It has been sold for a while as white marble with red cinnabar inclusions from Mexico. The piece showed in figure 1...
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