Results 91 to 100 of about 15,039,014 (169)

Gemological Abstracts

, 1996

core   +3 more sources

Spectroscopy and chromaticity characterization of yellow to light-blue iron-containing beryl. [PDF]

Sci Rep, 2022
Shang Y, Guo Y, Tang J.
europepmc   +1 more source

Comparative Analysis of Guatemalan and Qing Dynasty Jadeite Elemental Signs. [PDF]

Molecules, 2023
Liu X, Zhou Q, Wang Y, Shu J, Pan S, Zhan F.   +5 more
europepmc   +1 more source

Transition-Metal Composition, Optical Absorption, and Channel-Water Characteristics of Natural V-Rich Beryl from the North Muzart River Area, Xinjiang, China. [PDF]

Materials (Basel)
Zhu T, Li G, Schmitz F.
europepmc   +1 more source

Assessing predictive performance of supervised machine learning algorithms for a diamond pricing model. [PDF]

Sci Rep, 2023
Kigo SN, Omondi EO, Omolo BO.
europepmc   +1 more source

Gemological Abstracts

, 1989

core   +2 more sources

Chrysoprase color grading with machine learning: A systematic approach. [PDF]

PLoS One
Jiang Y, Guo Y, Cheung V, Wang P, Westland S.   +4 more
europepmc   +1 more source

Vaterite found in saltwater natural pearls from Pinctada Sp. mollusks. [PDF]

Naturwissenschaften
Zhou C, Jin S, Homkrajae A, Atchalak R, Alalawi A.   +4 more
europepmc   +1 more source

Effect of Diamond Polishing and Thermal Treatment on Carbon Paramagnetic Centers' Nature and Structure. [PDF]

Materials (Basel), 2021
Litvak I, Cahana A, Anker Y, Ruthstein S, Cohen H.   +4 more
europepmc   +1 more source

The impact of trace metal cations and absorbed water on colour transition of turquoise. [PDF]

R Soc Open Sci, 2021
Wang X, Guo Y.
europepmc   +1 more source