The value of luxury goods, particularly investment-grade gemstones, is influenced by their
origin and authenticity, often resulting in differences worth millions of dollars. Traditional …

Heavy metal contamination in raw materials has spread widely in the United States. The
high increased number of recalls in consumer products and the lack of stricter regulations in …

Thai gem corundums fall into two discrete populations on the basis of their trace element
fingerprinting. Sapphires are rich in Ga (up to 0.101 wt% Ga2O3) and poor in Cr (< 0.053 …

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was applied to
study source identification by using elemental fingerprint analysis combined with the use of …

Tanzanite is the blue to violet‐blue variety of the sorosilicate zoisite; its colour is due to
vanadium substitution of aluminium in the octahedral sites and is proved to appear after …

Knowledge related to photochemistry has been gradually introduced as a part of chemistry
courses at both undergraduate and postgraduate levels. However, due to their complex …

Origin of gemstones is a key aspect not only in gemological field but also in Cultural
Heritage studies, for the correct evaluation of precious artifacts. The studies on gems require …

The rationale of red colour in spinel was studied by an energy dispersive X-ray
microfluorescence apparatus (μ-EDXRF), equipped with the Kumakhov polycapillary …

This annual review of X-ray fluorescence covers developments over the period 2000–2001
in instrumentation and detectors, matrix correction and spectrum analysis software, X-ray …

This disclosure relates to a method for analyzing a sample of material. The method includes
(a) converting a portion of the sample into a plasma multiple times;(b) recording a spectrum …