J 2023

Characterization of chrysoberyl and its gemmological varieties by Raman spectroscopy

RYBNIKOVA, Olena; Peter BAČÍK; Pavel UHER; Jana FRIDRICHOVÁ; Bronislava LALINSKÁ-VOLEKOVÁ et. al.

Základní údaje

Originální název

Characterization of chrysoberyl and its gemmological varieties by Raman spectroscopy

Autoři

RYBNIKOVA, Olena; Peter BAČÍK; Pavel UHER; Jana FRIDRICHOVÁ; Bronislava LALINSKÁ-VOLEKOVÁ; Monika KUBERNÁTOVÁ a Radek HANUS

Vydání

Journal of Raman Spectroscopy, Wiley, 2023, 0377-0486

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.400

Kód RIV

RIV/00216224:14310/23:00131115

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001011821900001

EID Scopus

2-s2.0-85162712658

Klíčová slova česky

Ramanova spektroskopie; chrysoberyl; alexandrite; gemologie

Klíčová slova anglicky

Raman spectroscopy; chrysoberyl; alexandrite gemology

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 11. 1. 2024 14:59, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Various chrysoberyl varieties (non-phenomenal chrysoberyl, alexandrite and cymophane) are gemstones of high demand; therefore, they are subjected to numerous substitutions by other materials and synthetic analogues. To address this issue, non-destructive methods for studying gemstones are highly sought after. Raman spectroscopy is one of the most suitable non-destructive methods for studying gemstones as it requires no sample preparation and does not leave any price-reducing signs on the gemstone surface. The research is focused on Raman spectroscopy application on chrysoberyl identification, differentiation between its varieties, inclusion analysis, and detection of synthetic analogues and imitations. The alexandrite variety can be identified by its broad luminescence band that ranges from 640 to 790 nm (15 625–12 658 cm−1). Synthetic alexandrite has sharper and more intensive bands on the luminescence spectrum, especially 690 and 696 nm (14 492–14 367 cm−1). Rutile inclusions can be distinguished by a broad band 580–640 cm−1 in the Raman spectrum. Imitations of chrysoberyl represented by corundum and colour-changing spessartine was also identified. The orientation of faceted stones can also be determined by specific bands present in the Raman spectrum.