Podcast
Questions and Answers
What is a doublet in gemstone terminology?
What is a doublet in gemstone terminology?
- A gemstone with a foilback
- A technique for cutting gemstones
- Two pieces of material fused together (correct)
- A type of synthetic diamond
Which of the following accurately describes a diamond simulant?
Which of the following accurately describes a diamond simulant?
- It imitates a diamond's appearance but is not a diamond (correct)
- It can only be produced in small quantities
- It is always made from lab-grown materials
- It must be a natural stone
Which instrument uses thermal conductivity to distinguish diamonds from simulants?
Which instrument uses thermal conductivity to distinguish diamonds from simulants?
- Heft Tester
- Electrical Tester
- Multitester
- Thermal Tester (correct)
What does the term 'foilback' refer to in gemstone terminology?
What does the term 'foilback' refer to in gemstone terminology?
Which one of the following statements about synthetic moissanite is correct?
Which one of the following statements about synthetic moissanite is correct?
What is the primary method used to identify assembled simulants?
What is the primary method used to identify assembled simulants?
What feature makes cubic zirconia (CZ) stand out in the market of diamond simulants?
What feature makes cubic zirconia (CZ) stand out in the market of diamond simulants?
What characteristic is important when examining color coatings on simulants?
What characteristic is important when examining color coatings on simulants?
What does the heft of a diamond typically compare to?
What does the heft of a diamond typically compare to?
Which luster types are the best that simulants can exhibit?
Which luster types are the best that simulants can exhibit?
A measure of how well an electrical current passes through a material is called ?
A measure of how well an electrical current passes through a material is called ?
Heft is defined as ?
Heft is defined as ?
An instrument that measures both thermal and electrical conductivity to test diamonds and simulants is.....
An instrument that measures both thermal and electrical conductivity to test diamonds and simulants is.....
Glass imitation gemstones and diamonds.
Glass imitation gemstones and diamonds.
A trade term used to describe diamond imitations made of glass or plastic, with or without foilback is....
A trade term used to describe diamond imitations made of glass or plastic, with or without foilback is....
Surface appearance with slightly less sharp reflections than adamantine.
Surface appearance with slightly less sharp reflections than adamantine.
Glass-like surface appearance is.......?
Glass-like surface appearance is.......?
Simulants can be .....
Simulants can be .....
Simulants can be produced in nearly any size and quantity and cost .......
Simulants can be produced in nearly any size and quantity and cost .......
Convincing diamond simulants .........
Convincing diamond simulants .........
Diamond simulants have improved over time, but older simulants..............
Diamond simulants have improved over time, but older simulants..............
Synthetic and natural colorless sapphire were popular diamond simulants in the .........
Synthetic and natural colorless sapphire were popular diamond simulants in the .........
Zircon and cubic zirconia are......
Zircon and cubic zirconia are......
What is needed to conclusively identify a stone?
What is needed to conclusively identify a stone?
Diamond has a higher, what, than most simulants?
Diamond has a higher, what, than most simulants?
Moissanite testers use electrical conductivity to separate ........
Moissanite testers use electrical conductivity to separate ........
Make sure to check for doubling in .......
Make sure to check for doubling in .......
The read-through test is only reliable for....
The read-through test is only reliable for....
The heft test only works for.........
The heft test only works for.........
Girdles on simulants can’t be, what, like those on diamonds?
Girdles on simulants can’t be, what, like those on diamonds?
A jewelry professional can help clients or customers ..........
A jewelry professional can help clients or customers ..........
The best defense against false claims about simulants is .....
The best defense against false claims about simulants is .....
Be aware of what for common diamond simulants?
Be aware of what for common diamond simulants?
When it comes to selling diamond simulants you shouldn't sell them unless ......
When it comes to selling diamond simulants you shouldn't sell them unless ......
Flashcards
Doublet
Doublet
Two pieces of material fused to make one stone.
Diamond Simulant
Diamond Simulant
Material that looks like diamond but isn't.
Electrical Conductivity
Electrical Conductivity
How well a material carries electricity.
Foilback
Foilback
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Multi-Testers
Multi-Testers
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Thermal Tester
Thermal Tester
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Diamond vs Simulants
Diamond vs Simulants
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Simulant Properties
Simulant Properties
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Identifying Simulants
Identifying Simulants
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Moissanite Testers
Moissanite Testers
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Study Notes
Diamond Simulants
- Simulants are materials that mimic diamonds, but are not natural or lab-grown diamonds.
- Simulants are used as substitutes for diamonds.
- Simulants can be natural or human-made.
- Simulants are often produced in larger quantities and cost less than natural or lab-grown diamonds.
- Simulants can convincingly mimic many diamond features.
Identifying Simulants
- Simulant identification requires paying close attention to a variety of characteristics.
- Paying attention to the luster differences and the area around the circumference (girdle) is important in identifying assembled simulants.
- Examine facet junctions and reflect characteristics for identifying surface coatings on simulants.
- Comparing thermal conductivity is useful in distinguishing diamonds from some simulants.
- Use a combination of methods to conclusively identify a stone or simulant.
- Diamond has higher thermal conductivity than most simulants.
- Synthetics moissanite can cause a standard diamond tester to indicate diamond.
- Moissanite testers use electrical conductivity to separate synthetic moissanite from diamonds and other simulants.
Diamond Simulant Types
- Doublets are two pieces of material fused together to create a single assembled stone.
- Synthetic and natural colored sapphire were once popular diamond simulants, as were Zircon and Cubic Zirconia.
- Cubic zirconia (CZ) is the most popular diamond simulant on the market.
- Pay special attention to luster differences and areas above and below the girdle when identifying simulants.
Testing and Verification
- Double check for doubling in at least 3 directions, a reliable test using well-proportioned round brilliant cut stones.
- Diamond's have a lower specific gravity compared to most simulants.
- Diamonds have a lower heft.
Other Important Considerations
- Subadamantine and vitreous surface appearances are characteristic of simulants.
- Girdles on simulants are different than those on diamonds.
- Gemstone professionals can help customers feel confident in the purchase of simulants.
- Be aware of trade names and any misnomers used to describe simulants.
- Thorough knowledge and up-to-date skills are important in defending against false claims about simulants.
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Description
This quiz explores the characteristics and identification of diamond simulants. Participants will learn how to distinguish simulants from real diamonds by examining features such as luster, facet junctions, and thermal conductivity. Gain insights into the methods used for accurate identification and the implications of using simulants.
