Nephrite Bracelet with Filled Cavity
A jade bracelet contains unusual fillers, used to create a smooth surface.
Filled Pearl with Surface Features
A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.
Dyed Yellow Beaded Freshwater Cultured Pearls Imitating South Sea Cultured Pearls
A yellow cultured pearl necklace is compared to the work of a producer specialising in freshwater pearls of all colours.
“Sango Pearl” from Japan
A study of a pink Japanese akoya cultured pearl yields information about the material’s colour origin.
Cultured Pearl Market Update
A report from Tucson on the outlook of the pearl market.
Spectral Characteristics of Pinctada Mazatlanica and Pinctada Margaritifera Pearl Oyster Species
Examination of shells from on P. mazatlanica proves the similarities between that species and P. margaritifera.
Pearl Newsletter: Margaritologia
Margaritologia, a quarterly newsletter on pearls, was recently launched by Elisabeth Strack.
The First Identified Non-Nacreous Beaded Cultured Pearl
A report on what appears to be the first non-nacreous beaded cultured pearl examined by a laboratory.
A Large Baroque Tridacna Gigas (Giant Clam) Pearl
This giant clam pearl was noteworthy for its size and interesting colouration, and its pronounced banding when viewed with transmitted light.
A summary of the findings at Tucson’s 2015 gem shows.