True or False: No simulant mimics all of a diamond's features.

• A. False
• B. True
• C. Not stated
• D. Sometimes

Answer: (B)

Understanding that simulants cannot reproduce every property of diamond is the core idea here. Each simulant is designed to resemble some aspects—like color, brilliance, or eye-appeal—but none matches all of diamond’s features at once. For example, moissanite can imitate brightness and fire, but it has different refractive index and birefringence than diamond, and cubic zirconia can look very similar colorwise yet is softer and wears differently. Diamond’s combination of hardness, thermal conductivity, refractive index, dispersion, and crystal structure is unique, and no single simulant duplicates all of these. So the statement is true: no simulant mirrors every diamond characteristic.