: Red is the rarest and most expensive, followed by orange, green, and blue.
: The rarest and most valuable; it has a dark body tone (N1–N4) that makes colors appear more intense. buy opal earrings online
: Ensure the jeweler provides a Certificate of Authenticity stating the opal’s origin and any treatments (like smoking or sugar-acid treatments). : Red is the rarest and most expensive,
: The most common and affordable, featuring a milky or light body tone (N7–N9). followed by orange
: Formed within ironstone, often showing dramatic, unique patterns.