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Method for rapidly identifying natural ruby and synthetic ruby

A ruby, natural technology, used in measuring devices, material analysis by optical means, instruments, etc., can solve the problem that magnification inspection cannot be accurately and effectively differentiated, etc., to achieve high accuracy, convenient operation, and reduce the effect of misjudgment rate.

Inactive Publication Date: 2020-09-15
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Cut and polished synthetic rubies and natural rubies have the same appearance. When the internal features are not obvious, traditional magnification inspection and fluorescence observation methods cannot accurately and effectively distinguish the two, and most of the synthetic rubies on the market are internal. clean, without any identifying characteristics

Method used

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  • Method for rapidly identifying natural ruby and synthetic ruby
  • Method for rapidly identifying natural ruby and synthetic ruby
  • Method for rapidly identifying natural ruby and synthetic ruby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Get sample 1 and measure according to the above method:

[0032] The UV-visible light absorption spectrum of sample 1 has absorption peaks at 693nm, 668nm, and 659nm, absorption bands centered at 550nm and 410nm, and absorption peaks at 476nm, 475nm, and 468nm, and the absorption cut-off edge is 323nm, such as figure 2 As shown, between 285nm and 370nm. The sample was judged to be a natural ruby.

Embodiment 2

[0034] Get sample 2 and measure according to the above method:

[0035] The UV-visible light absorption spectrum of sample 2 has absorption peaks at 693nm, 668nm, and 659nm, absorption bands centered at 550nm and 410nm, and absorption peaks at 476nm, 475nm, and 468nm, and the absorption cut-off edge is 258nm, such as image 3 As shown, between 240nm and 280nm. The sample was judged to be a synthetic ruby.

Embodiment 3

[0037] Get sample 3 and measure according to the above method:

[0038] The ultraviolet-visible light absorption spectrum of sample 3 has absorption peaks at 693nm, 668nm, and 659nm, absorption bands centered at 550nm and 410nm, and absorption peaks at 476nm, 475nm, and 468nm, and the absorption cut-off edge is 273nm, such as Figure 4 As shown, between 240nm and 280nm. The sample was judged to be a synthetic ruby.

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Abstract

The invention belongs to the technical field of gem detection, and particularly relates to a method for rapidly identifying a natural ruby and a synthetic ruby. The method comprises the steps: determining an ultraviolet-visible light absorption spectrum of a ruby sample, and identifying the ruby sample as the natural ruby if the position of an absorption cut-off edge is between 285 nm and 370 nm;and if the position of the absorption cut-off edge ranges from 240 nm to 280 nm, identifying that ruby is the synthetic ruby. According to the method, the natural ruby and the synthetic ruby can be effectively distinguished, and compared with a traditional amplification inspection and fluorescence observation method, the method provides powerful data support, and can accurately identify the synthetic ruby; and the method is free of limitation, simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of gemstone detection, in particular to a method for rapidly identifying natural rubies and synthetic rubies. Background technique [0002] As one of the five major gemstones in the world, ruby ​​has a brilliant color and is deeply loved by people. However, ruby ​​resources are scarce. The world's rubies are mainly produced in Africa and Asia, and the main producing areas are only Burma and Mozambique. The scarcity of ruby ​​resources makes high-quality rubies even rarer and more expensive. Using artificial methods to synthesize rubies, it can have the high clarity, pigeon blood red and large particles of natural high-end rubies. Now that the synthetic ruby ​​technology is proficient, there are many phenomena in the market that use synthetic rubies to pretend to be natural rubies. Traditional identification methods such as magnification observation and fluorescence observation are difficult to deal with t...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/33
CPCG01N21/314G01N21/33G01N2021/3155
Inventor 王继尧陈永红郭嘉鹏姜莹芦新根孟宪伟葛仲义
Owner CHANGCHUN GOLD RES INST
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