Cubic zirconia are denser and heavier than diamonds of the same size. For example, a 6.5-mm diamond is about 1 carat, while a 6.5-mm cubic zirconia is about 1.7 carats.

Lab-created diamonds cost 30% to 70% less than natural diamonds but are costlier than CZ. They maintain resale value, whereas cubic zirconia has no resale value. Lab-created diamonds are more ...

Reflection test – Diamonds reflect white light, while diamond simulants like moissanite and cubic zirconia give off a distinct rainbow color when exposed to natural or artificial light.

A week after the March 4 theft, staff at the Tiffany store noticed the $225,500 ring had been replaced with cubic zirconia stone, a manufactured gemstone that resembles diamonds, according to the ...

Diamonds aren’t just a luxury item—as one of the hardest ... of Science and Technology in Hefei have achieved a record-breaking diamond storage density of 1.85 terabytes per cubic ...