What term describes the spots of light that flash as the diamond, the observer, or the light source moves?

What term describes the spots of light that flash as the diamond, the observer, or the light source moves?

• A. Specific gravity (SG)
• B. Sparkle
• C. Subduction
• D. Step cut

Answer: (B)

When light interacts with a diamond, the facets reflect and bend it in many directions. As you or the light source move, different facets catch and release light, creating tiny, bright spots that appear, vanish, and shift. This lively, changing flashes is commonly described as sparkle. It captures the dynamic, twinkling effect you see with movement, which is the essence of how the diamond’s facets play with light. The other terms refer to different ideas: specific gravity is about density, subduction is a geological process, and step cut is a type of facet arrangement—none specifically name the moving, shimmering light spots you observe. So sparkle is the term that best describes those moving light flashes.

When light interacts with a diamond, the facets reflect and bend it in many directions. As you or the light source move, different facets catch and release light, creating tiny, bright spots that appear, vanish, and shift. This lively, changing flashes is commonly described as sparkle. It captures the dynamic, twinkling effect you see with movement, which is the essence of how the diamond’s facets play with light. The other terms refer to different ideas: specific gravity is about density, subduction is a geological process, and step cut is a type of facet arrangement—none specifically name the moving, shimmering light spots you observe. So sparkle is the term that best describes those moving light flashes.