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ASSIGNMENT 18: SIMULANTS| QUESTIONS & ANSWERS VERIFIED SOLUTIONS 100%|GRADE A+|LATEST 2024/2025

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Diamond simulant - Any material that is not diamond or lab-grown diamond, but which imitates a diamond's appearance and is used in its place. Doublet - Two separate pieces of material fused or cemented together to form a single assembled stone.

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ASSIGNMENT 18: SIMULANTS| QUESTIONS & ANSWERS VERIFIED
SOLUTIONS 100%|GRADE A+|LATEST 2024/2025

Diamond simulant - ✔✔Any material that is

not diamond or lab-grown diamond, but

which imitates a diamond's appearance and

is used in its place.



Doublet - ✔✔Two separate pieces of material

fused or cemented together to form a

single assembled stone.



Foilback - ✔✔Gemstone or simulant with a thin

metallic foil or mirroring film applied to its

pavilion.



Rhinestone - ✔✔A foilbacked, colorless, leadglass

diamond imitation.



Separation - ✔✔Process of distinguishing

natural minerals and gems from each other

as well as from lab-grown gems, simulants,

and treated gems.



Thermal tester - ✔✔An instrument that

measures thermal conductivity to help

separate natural and lab-grown diamonds

from most simulants.

, Diamond simulants

A. are always manmade.

B. only look like diamonds.

C. are the same as lab-grown diamonds.

D. have the same properties as natural diamonds. - ✔✔B



Which of the following is a natural gem?

A. YAG

B. GGG

C. Zircon

D. Strontium titanate - ✔✔C



Which of the following properties is higher in GGG than in diamond?

A. Doubling

B. Dispersion

C. Specific gravity

D. Thermal conductivity - ✔✔C



Which diamond simulant shows noticeable doubling and strong fire?

A. CZ

B. Zircon

C. Synthetic rutile

D. Strontium titanate - ✔✔C



A stone formed by cementing two separate pieces of material together is called a...

A. doublet.

B. lab-grown stone.

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