This stunning 18-carat Amethyst features a rare and captivating transitioning from a rich royal purple to a subtle blue depending on the light. Set in an elegant trillion cut, the gem's sharp, triangular facets enhance its brilliance and depth. The "Royal" quality suggests an exceptional hue and clarity, making this a truly unique and eye-catching piece. Ideal for collectors or anyone seeking a statement gemstone with a mesmerizing, dynamic color profile.

Royal Trillion Cut: "Trillion" refers to the shape of the gemstone, a triangular cut with rounded corners, often chosen to enhance a stone's brilliance and depth. The term "Royal" could imply a high-quality or especially vivid version of Amethyst.

Amethyst: Amethyst is typically a purple to violet-colored variety of quartz. Under different lighting or depending on specific treatments, it can show variations in its purple hue or even slight bluish undertones.

Purple to Blue: Amethyst usually doesn’t show a pronounced color change like some other gemstones (e.g., alexandrite), but lighting can sometimes make the stone appear more blue or purple. Certain treatment processes (like heat treatment or irradiation) can also alter its natural color slightly.