Ass #19-Key Terms & Concepts

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of aperture in a camera?

To protect diamonds during storage

To sort gems by size

To analyze a gem's radiation absorption

To control the amount of light entering the camera (correct)

What does a sieving set accomplish in gemology?

It sorts small gems by size (correct)

It protects diamonds from scratches

It measures a diamond's absorption characteristics

It illuminates defects in diamonds

Which spectroscopy technique is crucial for identifying colored diamonds?

X-ray fluorescence spectroscopy

UV-Vis-NIR absorption spectroscopy (correct)

Photoluminescence Mapping

Fourier-transform infrared (FTIR) spectroscopy

What role does photoluminescence spectroscopy play in gemology?

It detects trace concentrations of defects in diamonds (D) Signup and view all the answers

How does a spectrometer function in gem analysis?

By analyzing a gem's radiation absorption (A) Signup and view all the answers

What is a characteristic of stones without fluorescence under normal UV light?

They will always show fluorescence at ultra-shortwave UV (D) Signup and view all the answers

What is the function of electronic scales in gem analysis?

To provide precise measurements when set up correctly (A) Signup and view all the answers

What determines the type of diamond based on its infrared spectrum?

The presence of absorption caused by boron and nitrogen (A) Signup and view all the answers

What does a matching tray help with in the diamond trade?

Matching sets of stones on grooved white non-reflective tray (B) Signup and view all the answers

The amount of time light has to enter a camera is ...

Exposure (B) Signup and view all the answers

A folded paper that comes in standard sizes used to hold and protect diamonds, as well as organize diamond inventory is .......

Stone Paper (B) Signup and view all the answers

A spectroscopy technique that collects PL data across the entire surface of a diamond, showing subtle distinctions in defect concentrations is ....

Photoluminescence Mapping (A) Signup and view all the answers

The DiamondView imaging microscope operates at a lower wavelength and higher energy ......

than the ultraviolet light typically used for fluorescence observations in routine gemological work. (B) Signup and view all the answers

A UV-Vis-NIR spectrometer measures a diamond’s absorption of visible light .......

and portions of the ultraviolet and infrared regions close to the visible range. (B) Signup and view all the answers

Fourier-transform infrared (FTIR) spectroscopy measures a diamond’s absorption of ......

infrared energy. (A) Signup and view all the answers

Photoluminescence spectroscopy examines light emitted by a diamond after exposure.......

exposure to a high-power laser (B) Signup and view all the answers

The DiamondView is a reliable tool for identifying .......

HPHT and CVD lab-grown diamonds (B) Signup and view all the answers

Advanced testing results require ......

further interpretation by experienced laboratory gemologists. (B) Signup and view all the answers

The information gathered with advanced instrumentation can help ......

conclusively identify a diamond (B) Signup and view all the answers

A small shovel made of thin metal, used for picking up gems.......is ?

Scoop (A) Signup and view all the answers

A pad of white paper for sorting and showing gems.....is?

Sorting pad (A) Signup and view all the answers

A knowledgeable, experienced professional, typically a dealer or manufacturer, in the diamond trade is ...?

Diamantaire (B) Signup and view all the answers

Study Notes

Diamond Key Terms & Concepts

Aperture: Opening where light enters a camera.
Diamantaire: Experienced diamond professional.
Exposure: Time light enters a camera.
Matching Tray: Grooved tray for matching stones.
Photoluminescence Mapping: Spectroscopy technique showing defect concentrations.
Scoop: Metal tool for picking up gems.
Sieve Set: Circular plates with sized holes for sorting.
Sorting Pad: White paper for sorting gems.
Spectrometer: Instrument analyzing gem radiation absorption.
Stone Paper: Folded paper for holding and organizing diamonds.

Diamond Key Concepts

Electronic scales: Very accurate, needing proper setup.
Advanced instrumentation: Crucial for conclusive diamond identification.
Advanced testing: Requires expert interpretation.
UV-Vis-NIR Spectrometer: Measures diamond visible light absorption.
UV-Vis-NIR Spectroscopy: Vital for colored diamond identification.
FTIR Spectroscopy: Measures infrared absorption.
Nitrogen/Boron: Absorption in the infrared spectrum affects diamond type (isolated or aggregated).
Photoluminescence Spectroscopy: Precise defect detection in diamonds.
Laser Excitation: Causes Photoluminescence in diamonds.
Fluorescence in UV: All diamonds show fluorescence, but at different UV wavelengths.
DiamondView Imaging Microscope: Operates at lower UV wavelengths for fluorescence.
HPHT/CVD Diamonds: DiamondView is effective in identifying lab-grown diamonds.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers essential terminology and concepts related to diamonds, including their identification and testing methods. Test your knowledge on tools and techniques used in the diamond industry, such as spectrometry and advanced instrumentation. Perfect for gemologists and diamond enthusiasts.