What is AB (Aurora Borealis)? The Iridescent Crystal Finish

What is AB (Aurora Borealis)?

Aurora Borealis — abbreviated as AB — is a special iridescent coating applied to gemstones, crystals, and glass beads to create a rainbow effect. The effect resembles the northern lights (hence the name) and makes surfaces light up in a kaleidoscope of colors when they move in the light. AB finish is widely used in jewelry, bridal accessories, and fashion accessories. Check out our crystal jewelry collection for jewelry with special finishes.

History of Aurora Borealis

The Aurora Borealis finish was first introduced by Swarovski in the 1950s, in collaboration with fashion icon Christian Dior. The finish was developed to give crystals an extra dimension of sparkle — essential in the glamorous fashion industry of that era. Since then, the AB finish has become a popular choice in the jewelry industry, especially for evening wear, bridal accessories, and dance and theater costumes. The name is inspired by the northern lights due to its resemblance to the magical colors of that natural phenomenon.

Properties of AB finish

The AB finish is a thin, reflective coating applied to the surface of crystals or glass beads. This coating causes light to reflect at different angles, resulting in a kaleidoscope of colors — from soft pink and purple to bright blue and green. Colors — the rainbow effect varies from warm tones (pink, orange) to cooler colors (blue, green) depending on the incidence of light. Reflection — the main feature: the coating gives crystals a striking brilliance that is much more vibrant than a crystal without AB. Versatility — AB can be applied to glass, crystal, and plastics, making it suitable for various styles and price ranges.

Use of AB in jewelry

AB finish is applied to crystals and glass beads to give jewelry extra sparkle. It is popular in bridal accessories, evening wear, and dance and theater costumes. AB crystals are used in statement earrings that catch light with every movement, in necklaces and bracelets for a glamorous look, and in rings where the rainbow effect stands out with every hand movement.

Tips for buying AB jewelry

Quality of the crystals — ensure that the AB finish is evenly applied for optimal brilliance. Maintenance — choose jewelry that is practical to maintain and store it dry. Combining — combine AB jewelry with plain gemstones or metals for a balanced, elegant look without overwhelming sparkle.

Frequently asked questions about AB (Aurora Borealis)

What is the difference between a regular crystal and an AB crystal?
A regular crystal only has the natural sparkle of the glass or stone. An AB crystal has an additional iridescent coating that creates a rainbow effect — the colors change depending on the light and movement.
Can AB finish wear off or fade?
The AB coating is durable but can wear off over time with frequent use or careless handling. Protect AB jewelry from hard impacts, water, and chemicals to extend the life of the finish.
What is AB most commonly used for?
AB finish is most commonly used in bridal accessories, gala jewelry, and dance and theater costumes. It is also applied in everyday jewelry to add a touch of glamour.
How do I care for jewelry with AB finish?
Clean AB jewelry carefully with a soft, dry cloth. Avoid harsh cleaning agents and chemicals — these can damage the coating. Store in a soft pouch or separate jewelry box to prevent scratches.
Who invented the AB finish?
The Aurora Borealis finish was introduced in the 1950s by Swarovski in collaboration with Christian Dior. It was developed to give crystals an extra dimension of sparkle for the glamorous fashion industry of that era.