In relation to most simulants, how does diamond's SG and heft compare?

In relation to most simulants, how does diamond's SG and heft compare?

• A. Higher SG and heft
• B. Lower SG and heft
• C. Higher SG but lower heft
• D. Similar SG and heft

Answer: (B)

Density differences are what this question hinges on. Diamond has a specific gravity of about 3.52, which is lower than many common diamond simulants—cubic zirconia, YAG, and similar materials—whose densities are higher (roughly 4–6 for most of the well-known simulants). Because density is a measure of how much mass is packed into a given volume, a gem with lower density will weigh less for the same size. That lighter weight is what we mean by a lower heft. So, relative to most simulants, diamond sits with a lower SG and a lighter heft. (Note: some exceptions exist, like moissanite, which can be near or a bit lighter than diamond in density, but the general trend with the common simulants is that diamond is lighter for its size.)

Density differences are what this question hinges on. Diamond has a specific gravity of about 3.52, which is lower than many common diamond simulants—cubic zirconia, YAG, and similar materials—whose densities are higher (roughly 4–6 for most of the well-known simulants). Because density is a measure of how much mass is packed into a given volume, a gem with lower density will weigh less for the same size. That lighter weight is what we mean by a lower heft. So, relative to most simulants, diamond sits with a lower SG and a lighter heft. (Note: some exceptions exist, like moissanite, which can be near or a bit lighter than diamond in density, but the general trend with the common simulants is that diamond is lighter for its size.)