Gemstones

Gemology

Released Note / Articles

• Application and choice of Raman spectrometer on the gemological identification

• Cause and Analysis of the Inconsistency in Raman Spectra of Gemstones or Minerals —Solutions to Confusion and Puzzles

Diamond

Released Note / Articles

• Novel Method of Diamond Color Grading by Raman Spectroscopy (GIA)

• Novel Method of Diamond Color Grading by Raman Spectroscopy

• Novel and Rapid Identification of Natural and Synthetic CVD Diamonds by Raman & PL Spectroscopy

• Examination and Analysis of HPHT Color-Enhanced Natural B-defect Type IIa Diamonds by Raman and PL Spectroscopy

• Identification Analysis of Natural and Post-Irradiated Green Diamond by Raman Spectrometer

★ Note / Articles (Only for UID Customer Reference)

• Rapid Identification of Argyle Diamond's Origin by Characteristic Raman Spectra

• Identification of diamond and similar gemstones by Raman spectroscopy

• Discrimination between natural and synthetic diamonds by Raman spectroscopy

• The Raman analysis for Identification of irradiation Diamond

• Rapid Identification and Analysis of Synthetic HPHT Diamonds by Raman Spectroscopy

• Case Study : identification of brown Type IIa Diamond treated by HPHT

• Examination and Analysis of HPHT induced C-defect (Ib) of Type IIb Brown Diamonds by Raman and PL Spectroscopy

• Clarification on Enhancement Treated Natural Type IIa Diamonds and Irradiated Colorless Diamonds

• Rapid Raman and PL Spectroscopic Identification and Analysis of Synthetic Pink Diamonds

• Raman and PL Spectroscopic Identification and Analysis on Various Types (kinds) of Black Diamonds

• Raman and PL Spectroscopic Identification and Analysis on Various Types (kinds) of Blue Diamonds

• Raman Identification and Analysis of Color-enhanced GE-POL Type IIa Diamond

• Formation of Nitrogen-Vacancy Defect and Other Relicts of HPHT Synthetic Diamond
  

Jadeite (Jade)

Released Note / Articles

• Raman Spectroscopic Inspection and Analysis on Natural Old Mine Jadeite and Enhancement Treated Jadeite -On the Misinterpretation of Raman Spectroscopic Report

★ Note / Articles (Only for UID Customer Reference)

• General traditional jade identification tools and methods

• Optimized treatment for jadeite and associated albite

• Identification of bleached & polymer-impregnated jadeite by Raman spectroscopy

• Identification of Bleached & polymer-impregnated jadeite by high sensitive portable Raman spectrometer

• Supplement: Identification of Bleached & polymer-impregnated jadeite by high sensitivity portable Raman spectrometer

• The Raman analysis of Dark Jade (Omphacite)

• Identification and discrimination of local jade

• A study for external substances and alteration minerals of jade Identification of cabochon apatiterings - a case study of fake jade

• The Raman analysis of sample jade horse

• The Raman analysis for Identification of Simulate Jade Artifact (Bracelet)

• The Raman analysis for Identification of Simulate jade Artifact (Buddha)

• The Raman analysis of Jades and Their Simulates

• The Raman analysis for Identification of " Dyed" Simulated Jade Artifact (Bracelet)(2)

• Raman analysis for identifying synthetic jade artifact and bracelet(3)

• Identification of Color Wax-Enhanced Jade by Raman and PL Spectroscopy

• Analyses of Chromium Content of Natural Green Jadeite by Raman and PL Spectroscopy—in Comparison with Dye-treated Jades

• Raman Spectroscopic Inspection and Analysis of Marco-molecule Wax (Glue)

• Raman spectroscopic Analysis of Wax-stewed Jade

• Raman Spectroscopic Identification and Analysis of Epoxy-Impregnated Jadeite (B-Jade)

• Qualitative Analysis of the Species of Jade by Raman Spectroscopy

• Raman Identification and Analysis of Dyed Jade (C-Jade)

• Raman Spectroscopic Identification and Analysis of Epoxy and Wax on Jades

• Raman Identification and Analysis of Waxed Jades

• Raman Spectroscopic Investigation and Analysis on Paragenetic Mineral (Albite) and Alteration Mineral (Analcime) in Jade

Nephrite

★ Note / Articles (Only for UID Customer Reference)

• Identification of nephrite’s associated minerals and provenances

• Raman spectroscopy for identifying nephrite and its counterfeits

• The Raman analysis of Han’s White Nephrite (Marble) and Associated Minerals
  

Ruby and Sapphire

Released Note / Articles

• Examination and Analysis of Ti-Diffusion in Sapphire by Raman and PL Spectroscopy

• Raman Spectroscopic Inspection and Analysis of Zircon Inclusion in Corundum

  -Effect of Heat Treatment on Zircon Inclusion

• The Raman analysis of Color-causing factor of sapphire

★ Note / Articles (Only for UID Customer Reference)

• Novel and Rapid Identification of Glass-Filled and Beryllium-Diffused Corundum by Raman Spectroscopy

• Raman spectroscopy for identifying Synthetic and natural ruby

• Raman spectroscopy for identifying glass filled Ruby

• To identify Enhancement Treatment of Ruby by Raman

• Identification of beryllium diffusion treated corundum by Raman spectroscopy

• The Raman analysis of origin -Premium Sapphire-Kashmir Sapphire

• How to distinguish Burma Sapphire by Raman spectroscopy

• How to identify Heat Treatment Sapphire by Raman

• Novel and Rapid Identification of Beryllium-Diffused Corundum by Libs and Raman
  
  

Amber

Released Note / Articles

• Rapid Identification of Amber’s Origin by Characteristic Raman Spectra-Baltic Sea Amber and Dominican Amber

• Rapid Identification of the Imitations and Treated Amber by Raman Spectroscopy

★ Note / Articles (Only for UID Customer Reference)

• How to distinguish Amber and Its Simulates by Raman spectroscopy

• How to distinguish Epoxy Resin of Amber by Raman spectroscopy

• Interpreting and Analysis of the Evolution in the Formation of Amber by Raman Spectroscopy

• Rapid Identification and Application of Amber -Practical Case Analysis By Raman Spectroscopy

• The Effect of Lithification of Amber on the Inspection Requirement of Raman Spectroscopic Analysis

• Raman Inspection of Fushun Amber’s origin by its Spectral Characteristics

• Raman Spectroscopic Identification and Analysis on Amber with Various Extent of Thermal Treatment

• Raman Spectroscopic Identification and Analysis on Amber of Various Colors

• Raman Spectroscopic Analysis of Borneo Ambers

• Raman Spectroscopic Identification and Analysis on Ambers from Myanmar and Locality Characters
  

Emerald

Released Note / Articles

• Raman Spectroscopic Analysis of Natural and Synthetic Emeralds

★ Note / Articles (Only for UID Customer Reference)

• How to distinguish Emerald and Aquamarine by Raman spectroscopy

• Rapid Inspection and Analysis of Oiling Enhancement of Emerald
  

Coral

Released Note / Articles

• Raman identification and analysis of coral and organic dyed corals

• Raman identification and analysis of coral and Inorganic Dyed Corals

• Raman Spectroscopic Identification and Classification of Aka and Momo Red Coral

• Red Color of Natural Coral and Its Analysis of the Linear Relationship with Carotenoid

★ Note / Articles (Only for UID Customer Reference)

• Raman spectroscopy for identifying coral and counterfeits

• Raman Spectroscopic Identification and Analysis of Coral Jades
  

Pearl

★ Note / Articles (Only for UID Customer Reference)

• Rapid Identification and Analysis of Black Pearl by Raman Spectroscopy
  
  

Chalcedony

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of Inclusions in Blue Chalcedony from Taiwan

• Identification of blue chalcedony by Raman spectroscopy

Opal

Released Note / Articles

• Raman Spectroscopic Examination and Analysis on Various Forms of Opal from Different Localities

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of Opal family

• Raman Spectroscopic Analysis and Interpretation of Enhancement Treated Precious Opals : Sugar-Acid and Smoke Treatments

Stone of Seal

★ Note / Articles (Only for UID Customer Reference)

• Application of Raman spectroscopy for identifying stone of seal

• A useful analysis tool for inspecting stone of seal - Raman spectrometer

• Analysis of Raman spectrum for bloodstone

Quartz

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of Microcrystalline Quartz

Tourmaline

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of origin -Premium Tourmaline-Paraiba

Garnet

Released Note / Articles

• Application of Raman Spectroscopy in the Identification of Garnets

Prehnite

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of Prehnite String of Beads

Rhodonite

★ Note / Articles (Only for UID Customer Reference)

• How to distinguish Rhodochrosite and Rhodonite by Raman spectroscopy

Turquoise

Released Note / Articles

• Inspection and Analysis of Natural and Enhanced Turquoise with Raman and PL Spectroscopy

Adventurine

★ Note / Articles (Only for UID Customer Reference)

• The Raman analysis of Aventurine

Carnelian

★ Note / Articles (Only for UID Customer Reference)

• Analysis of Raman spectrum for Carnelian (Jasper)
  

Kosmochlor

★ Note / Articles (Only for UID Customer Reference)

• Examination and Analysis of Skarn (or Kosmochlor) Simulant by Raman and PL Spectroscopy