Which simulant has slightly lower SG than diamond?

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Study for the GIA Graduate Diamonds Test. Refresh your diamond knowledge with multiple choice questions and detailed explanations. Prepare confidently for your exam!

Multiple Choice

Which simulant has slightly lower SG than diamond?

Explanation:
Specific gravity is a measure of density relative to water. Diamond has an SG of about 3.52. Among common simulants, the one with a density slightly lower than diamond is moissanite, whose SG is roughly 3.2. The other options are noticeably heavier: cubic zirconia around 5.6–5.9, YAG about 4.4–4.6, and GGG around 7.0. So moissanite is the simulant with SG just below diamond’s.

Specific gravity is a measure of density relative to water. Diamond has an SG of about 3.52. Among common simulants, the one with a density slightly lower than diamond is moissanite, whose SG is roughly 3.2. The other options are noticeably heavier: cubic zirconia around 5.6–5.9, YAG about 4.4–4.6, and GGG around 7.0. So moissanite is the simulant with SG just below diamond’s.

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