These 10mm Preciosa Ornela fire polished rounds in transparent cobalt are a workhorse bead — deep, saturated blue glass with the crisp faceting that Czech glass is known for, sold in a generous 150-piece count.

Transparent cobalt means light passes straight through the glass, giving each facet a clean, glassy depth — the kind of rich, true blue that reads differently under lamplight than in sunlight.

Specifications

• Size: 10mm
• Color: Transparent Cobalt (transparent)
• Finish: Transparent
• Material: Glass, made in Bohemia, Czechia
• Quantity: 150 Pieces

What to make with them

At 10mm, these rounds are substantial enough to anchor a strung necklace or bracelet on their own, and their faceting catches the light well in bead weaving contexts like right-angle weave or netting where larger focal elements add structure and rhythm.