QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire

Phase contrast, transmission and birefringence microscopy side/axial

Gemstone Analysis and Authentication

Experimental setup of the femtosecond laser QR Code writing on

Raman spectra measured at the far ends (top and bottom) of a single

Red gemstone characterization by micro‐Raman spectroscopy: the case of rubies and their imitations - Barone - 2016 - Journal of Raman Spectroscopy - Wiley Online Library

Three-dimensional scatter diagram of the five color charts

Ultrafast femtosecond laser micro-marking of single-crystal natural diamond by two-lens focusing system - ScienceDirect

This copper-bearing tourmaline from Mozambique was cut in half, and the

Proton beam irradiation induces invisible modifications under the surface of painted parchment

QR code micro-certified gemstones: femtosecond writing and Raman characterization in Diamond, Ruby and Sapphire

Chemosensors, Free Full-Text

Results of classification discriminant analysis