Gemmology in the service of archaeometry

Riccardi, María Pia; Prosperi, Loredana; Tarantino, Serena C.; Zema, Michele

doi:10.1180/emu-notes.20.9

Cited by 2 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another one is the study of the Iron Crown, kept at the altar of the Teodolinda Chapel in the Cathedral of Monza (Italy). The crown which has uncertain dating [32] sets a total of 22 gemstones [33], identified by Riccardi [33] as corundum (7), garnet (7), quartz (4), and artificial glasses (4). In addition, in this second case, a Sri Lankan origin has been hypothesized by the authors for the corundum gemstones.…”

Section: Cultural Heritage and Gemstonesmentioning

confidence: 99%

The Importance of Multidisciplinary Analytical Strategies to Solve Identification and Characterization Challenges in Gemology: The Example of the “Green Stones”

Musa

2022

Applied Sciences

View full text Add to dashboard Cite

The present review aims to discuss the importance of a multidisciplinary approach in cultural heritage and archaeometry investigations. The analytical methods used to identify and characterize “Green Stones” are discussed as an example. In the present paper, the term Green Stones is applied but not limited to jade materials, which have considerable importance in cultural heritage studies. In fact, archaeological samples made in Green Stones have been discovered worldwide, with many dating back to the Neolithic Age. Moreover, these materials represent an interesting analytical challenge, starting with their nomenclature and, in most cases, the nature of their polycrystalline samples and their heterogeneity. Indeed, after a brief introduction about the advantages of the non-destructive analytical techniques commonly used for gemstones and cultural heritage samples analyses, the limits of the same have been discussed on the basis of Green Stones applicability. Finally, a multidisciplinary methodology for Green Stones identification and full characterization, which considers materials’ heterogeneity and information, has been proposed and based on different references.

show abstract

Section: Cultural Heritage and Gemstonesmentioning

confidence: 99%

The Importance of Multidisciplinary Analytical Strategies to Solve Identification and Characterization Challenges in Gemology: The Example of the “Green Stones”

Musa

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The classical methods used by gemmologists are based on the measurement of the refraction index, of the birefringence or double refraction and of specific gravity [ 1 , 2 ]. Apart from these methods, instrumental techniques are presently available which allow even non-experts to correctly identify gemstones.…”

Section: Introductionmentioning

confidence: 99%

The Use of UV-Visible Diffuse Reflectance Spectrophotometry for a Fast, Preliminary Authentication of Gemstones

et al. 2022

View full text Add to dashboard Cite

The identification of gemstones is an important topic in the field of cultural heritage, given their enormous value. Particularly, the most important precious stones, namely diamond, emerald, ruby and sapphire, are frequently subjected to counterfeit by substitution with objects of lesser value with similar appearance, colour or shape. While a gemmologist is able to recognise a counterfeit in most instances, more generally, it is not easy to do this without resorting to instrumental methods. In this work, the use of UV-visible diffuse reflectance spectrophotometry with optic fibres (FORS) is proposed as a fast and easy method for the preliminary identification of gemstones, alternative to the classical methods used by gemmologists or to Raman spectroscopy, which is by far the instrumental method with the best diagnostic potential, but it cannot be used in situations of problematic geometric hindrance. The possibilities and the limitations given by the FORS technique are critically discussed together with the spectral features of the most important gemstones. Finally, the application of chemometric pattern recognition methods is described for the treatment of large sets of spectral data deriving from gemstones identification.

show abstract

Gemmology in the service of archaeometry

Cited by 2 publications

References 38 publications

The Importance of Multidisciplinary Analytical Strategies to Solve Identification and Characterization Challenges in Gemology: The Example of the “Green Stones”

The Importance of Multidisciplinary Analytical Strategies to Solve Identification and Characterization Challenges in Gemology: The Example of the “Green Stones”

The Use of UV-Visible Diffuse Reflectance Spectrophotometry for a Fast, Preliminary Authentication of Gemstones

Contact Info

Product

Resources

About