Cubic Zirconia (Simulated Diamond)

Hardness: 8.0–8.5 (Mohs scale); Color: Colorless (usually); Luster: Adamantine; Crystal Structure: Cubic; Specific Gravity: 5.6–6.0 (much denser than diamond)

Formed through a synthetic laboratory process called the 'skull melt' method, where zirconium oxide powder is heated with stabilizers like yttrium or calcium. While natural baddeleyite exists, gem-quality cubic zirconia is exclusively man-made.

Primary use is as a low-cost diamond alternative in jewelry. Also used in industrial applications for its high melting point and thermal insulation properties.

Cubic zirconia is optically flawless and lacks the natural inclusions found in most diamonds. It has a higher dispersion (fire) than diamond, meaning it reflects more colorful light flashes.

Identify in the field by checking for higher weight than a same-sized diamond, lack of thermal conductivity, and the presença of a 'doubling' effect or orange flashes under specialized lighting. The reported location in Kansas/Missouri does not feature natural gem-quality diamonds or CZ, confirming this is a commercial jewelry item.