MAXIMA Crystals by Preciosa Hotfix Rhinestones Siam 30ss

These 6.3mm – 6.5mm deep ruby-red hotfix crystals from Preciosa® bring the classic, intense color of Siam to statement accents and high-impact costume designs. MAXIMA is Preciosa's premium rhinestone line, precision-cut in Europe for maximum brilliance and consistency. For comparable non-hotfix, Shop MAXIMA Crystals by Preciosa® Flatback Rhinestones Siam 30ss.

Best for: dance costumes, skating dresses, competition and pageant wear, holiday and Valentine's Day designs, and any project where a bold, true red needs to read with depth and drama under stage lighting.

Why You'll Love Them

• Siam color: A deep, classic ruby red with rich intensity that reads as bold and dramatic under stage and natural lighting
• 30ss (6.3mm – 6.5mm) size ideal for bold statement accents and high-impact designs
• Hotfix backing: Heat-activated adhesive for fast, clean application to fabric
• MAXIMA quality: Preciosa's premium European crystal line, precision-cut for maximum light return
• Consistent stones: Uniform sizing and shape in every pack, so no culling required

Size Reference

30ss rhinestones measure approximately 6.3mm – 6.5mm. This is one of the larger hotfix sizes, well suited for bold accents, costume borders, scattered statement stones, and designs that need to read from a distance under stage lights. To compare sizes, see our rhinestone size chart with ss, mm, and inches.

Packaging Options

• Best Value: 2 gross (288 pieces)

Crystal Size Reference Guide

Frequently Asked Questions

What color is Siam in rhinestones?

Siam is a deep, classic ruby red with rich intensity and cool blue undertones. It reads as bold and dramatic under stage and natural lighting — darker and more jewel-toned than Light Siam, and distinctly cooler and more blue-leaning than Hyacinth or Indian Red. It is a strong choice for designs that call for a true, theatrical red with depth and presence.

What are 30ss rhinestones best for?

30ss rhinestones measure approximately 6.3mm – 6.5mm and are one of the larger hotfix sizes. They are best for bold statement accents, costume borders, scattered large stones, and designs that need to read clearly from a distance under stage lights. A 2 gross pack (288 pieces) suits generous accent areas or multiple costume pieces.

What is the difference between Siam and Light Siam at 30ss?

Siam is a deep, saturated ruby red with strong color intensity. Light Siam is a softer, brighter red-pink that reads as warmer and less jewel-toned. Under stage lighting, Siam reads as dark and dramatic while Light Siam reads as bright and lively. The two pair well in layered red designs where depth and contrast are the goal.

Can I mix Siam 30ss hotfix with smaller sizes for a layered design?

Yes. Pairing 30ss stones as focal accents with 16ss or 20ss fill stones in Siam is a common technique for graduated coverage. Because MAXIMA crystals are sorted to strict size tolerances, Siam at different sizes will match in color and finish throughout the design.

Browse our full Siam color collection or shop all MAXIMA Crystals by Preciosa hotfix rhinestones.