Assignment 19 - Tools & Instrumentation Flashcards
What tools are used to handle and sort diamonds?
- Stone paper
- Scoop
- Sorting Pad
- Matching tray
- Sieve set
How are diamonds measured and weighted?
- Milimeter gauge
- Electronic scale
What are some considerations when matching diamonds?
Color & face-up appearance
Clarity for included diamonds.
A knowledgable, experienced professional, typically a dealer or manufacturer, in the diamond trade
Diamantaire
A folded paper that comes in standardized sizes used to hold and protect diamonds as well as organize diamond inventory
Stone paper
A small shovel made of thin meta, used for picking gems
Scoop
A pad of white paper for sorting and showing gems
Sorting Pad
A grooved white non-reflective tray used for matching sets of stones
Matching tray
Set of circular plates, each punched with precisely sized holes, used for sorting small, round gems by size
Sieve set
When should a diamond be submitted for advanced testing?
When standard equipment is not enough. Typically for more valuable stones that justify the effort.
What advanced testing techniques are used in gemological laboratories?
Most advanced testing techniques measure a diamond’s response to electromagnetic radiation
What testing techniques are used to determine color origin?
- UV-Vis-Spectrometer
- Infrared Specotometer (FTIR)
What testing techniques are used to distinguish between natural and lab-grown diamonds?
- Photoluminiscence Spectometer
- Photoluminesence mapping
- High-energy UV imaging (DiamondView)
A spectroscopy technique that collects PL data across the entires surface of a diamond, showing subtle distinctions in defect concentration.
Photoluminescence mapping
Opening through which light enters a camera
Aperture
