What were popular diamond simulants in the 1990s?

• A. Diamond cut quartz
• B. Emerald and ruby
• C. Moissanite and quartz
• D. Synthetic and natural colorless sapphire were popular diamond simulants in the 1990s

Answer: (D)

Diamond simulants are stones that mimic the look of diamond at a lower cost. In the 1990s, synthetic and natural colorless sapphire were commonly used as affordable diamond substitutes because they could be produced in colorless form, cut to maximize brilliance, and supplied at lower prices than diamonds while offering high hardness (sapphire is 9 on the Mohs scale) for durability. Their optical properties can resemble the sparkle of a colorless diamond in typical lighting, making them a practical choice for jewelry during that era. Other materials listed don’t fit as well: emerald and ruby have strong color and different optical traits, and moissanite became popular later as a diamond simulant in widespread use. Therefore, colorless sapphire—whether natural or synthetic—was the popular diamond simulant in the 1990s.