20ss Siam Shimmer AB – MAXIMA Hotfix Crystals by Preciosa®

20ss (4.6mm) MAXIMA Hotfix Crystals by Preciosa® in Siam Shimmer AB are a striking combination of deep, ruby red brilliance and a refined shimmer coating. These hotfix rhinestones feature a heat-activated adhesive backing, making them perfect for garments, dancewear, and costumes requiring durable, long-lasting sparkle.

Why You'll Love Them

• Color: Siam – Rich ruby red
• Effect: Shimmer AB – a lighter, more ethereal AB finish
• Size: 20ss (4.6mm) – our most popular size for visibility and versatility
• Heat-activated glue for permanent, secure application
• Precision-cut facets for unmatched brilliance
• Made in the historic Crystal Valley of Bohemia by Preciosa®

Packaging Options

• Best Value: 10 Gross Pack (1,440 pieces)
• Also Available: 1 Gross Pack (144 pieces)

What is Shimmer AB?

The Shimmer AB effect is a refined version of the classic Aurora Borealis finish. Inspired by Swarovski’s Shimmer effect, this delicate AB layer enhances the base crystal color without overpowering it—delivering a glowing, iridescent shine that changes with the light for a dynamic finish.

About MAXIMA Crystal by Preciosa

MAXIMA is Preciosa’s top-tier crystal line, crafted with advanced cutting technology and premium materials. These European-made stones represent the pinnacle of brilliance, durability, and eco-conscious production.

If you're looking for a more budget-conscious option, explore our LUX Austrian Crystal for similar styles at lower prices.

Rhinestones Unlimited is proud to be an Authorized Preciosa Partner. Our mission is to empower creators across costuming, dance, fashion, beauty, and DIY with premium-quality products and unmatched support.

Why Choose MAXIMA Hotfix?

• Meets strict European quality and ecological certifications
• Exceptional sparkle through high-precision faceting
• Reliable hotfix glue for secure, wash-resistant bonding
• Consistent sizing and shine through rigorous quality control
• Trusted by designers and artisans worldwide

Crystal Size Reference Guide

Need help choosing the right size? Refer to our crystal size guide below: