Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Environmental Adaptation Differences Are Key Factors Determining the Speciation and Future Adaptability of the Five Closely Related Species of the Genus <i>Ophioglossum</i>.

Ecology and evolution·2026
Same author

Two Trichoderma endophytic fungi alleviates drought stress and improves plant growth in Cinnamomum migao seedlings.

Scientific reports·2026
Same author

First Report of Leaf Spot on Cinnamomum migao Caused by Epicoccum latusicollum in China.

Plant disease·2025
Same author

Microbial community disruption and Fusarium solani as the causal agent of root rot in a medicinal crop, Cyclocodon lancifolius.

Pest management science·2025
Same author

The Accumulation of Chemical Components of Volatile Oil in <i>Cinnamomum migao</i> Fruit Is Related to Endophytic Fungi.

Ecology and evolution·2025
Same author

Preliminary study on <i>Cyclocodon lancifolius</i> leaf blight and screening of <i>Bacillus subtilis</i> as a biocontrol agent.

Frontiers in microbiology·2024

Related Experiment Video

Updated: Jun 9, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

[Study on the treatment turquoise using Raman spectroscopy].

Quan-li Chen1, Xin-qiang Yuan, Jing-zhong Chen

  • 1Gemology Institute, China University of Geosciences, Wuhan 430074, China. chenquanli_0302@163.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|September 11, 2010
PubMed
Summary

Laser Raman spectroscopy effectively identifies treated turquoise. This non-destructive method analyzes unique spectral fingerprints, distinguishing natural stones from enhanced ones for gemological authenticity.

More Related Videos

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
07:52

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer

Published on: April 12, 2017

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy
15:04

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy

Published on: May 18, 2011

Related Experiment Videos

Last Updated: Jun 9, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
07:52

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer

Published on: April 12, 2017

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy
15:04

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy

Published on: May 18, 2011

Area of Science:

  • Gemology
  • Materials Science
  • Spectroscopy

Context:

  • Turquoise identification is increasingly challenging due to widespread treatments and enhancements.
  • Distinguishing natural turquoise from treated varieties is crucial for market integrity and consumer trust.

Purpose:

  • To investigate the efficacy of laser Raman spectroscopy for identifying enhanced and treated turquoise.
  • To characterize the Raman spectral features of natural, pressed, and filled turquoise samples.

Summary:

  • Laser Raman spectroscopy provides an effective, non-destructive method for turquoise identification.
  • Analysis of Raman spectra reveals distinct vibrational modes and frequencies related to water, hydroxyl, PO4, and CH2 units in treated turquoise.
  • Characteristic Raman peaks at 2,937, 2,883, and 1,451 cm(-1) associated with CH2 vibrations aid in differentiating treated from natural turquoise.

Impact:

  • Establishes laser Raman spectroscopy as a valuable tool for rapid, accurate, and non-destructive gemological analysis.
  • Offers a new approach for verifying the authenticity of turquoise in the gem market.
  • Contributes to the scientific understanding of turquoise characterization through vibrational spectroscopy.