Hiland Cobalt Blend Fire Glass 1/3" 10 lb – Cobalt Blue, Extreme-Temp Recycled Glass for Propane & Natural Gas

Hiland RGLASS-CB Cobalt Blend is a 10-pound bag of 1/3-inch recycled fire glass designed for propane or natural gas fireplaces and fire pits, offering high heat resistance and a jewel-like cobalt blue finish.

Bring a modern, low-maintenance look to your hearth or outdoor fire feature with this cobalt blue fire glass. Cut from recycled tempered glass and rated for extreme temperatures, Hiland’s RGLASS-CB produces lively, reflective flames that enhance ambiance while covering unsightly burner components. Unlike logs or lava rock, fire glass delivers a clean burn with no ash, soot, or smoke and retains its color and structure through long-term exposure to heat.

How does this fire glass perform with propane and natural gas?

Hiland RGLASS-CB is formulated to handle the high surface temperatures produced by gas burners without melting or degrading. It’s suitable for both indoor fireplaces and outdoor pits when installed over the proper burner system and media bed. Because it’s made from recycled tempered glass, it resists thermal shock better than plain glass.

• Rated for extreme temperature use with gas burners
• 1/3-inch pieces lie flat to evenly distribute heat and flame
• Works with standard natural gas and propane burners
• Helps conceal burner tubes and hardware for a clean look

What makes the cobalt blend different from other fire glass colors?

The cobalt blue formula reflects and refracts flame light to create deep blue and bright aqua highlights, giving a gemstone-like appearance. Its saturated color holds up under repeated heating cycles and keeps a consistent visual effect over time. Choose this blend for a bold, contemporary aesthetic in patios or modern fireplace surrounds.

• Deep blue tones with luminous highlights
• Colorfast under heat—won’t dull like some finishes
• Ideal for creating striking contrast with yellow-orange flames
• Pairs well with metal or stone fire pit designs

How much coverage does a 10-pound bag provide and how do I install it?

One 10 lb. bag of 1/3-inch fire glass covers roughly a small to medium burner area depending on depth—typically a light layer for decorative use or a deeper layer to fully hide burner hardware. Installation is straightforward: turn off gas, place a protective fire glass mat if recommended by your burner manufacturer, spread the glass evenly, then relight following safety guidelines.

• 10 lb bag suitable for accent coverage or partial floor fill
• Use a 1–2 inch depth for decorative effects; deeper to conceal hardware
• Always follow burner manufacturer instructions and safety checks
• Compatible with commercially available fire glass mats and media

How do I care for and maintain Hiland fire glass?

Fire glass is nearly maintenance-free compared with traditional fuels: it emits no ash, soot, or smoke and only needs occasional rinsing or wiping to remove dust or outdoor debris. For the best appearance, rinse with freshwater and allow to air dry before returning to the fire feature. Avoid using untempered glass or materials not rated for direct flame contact.

• No ash or soot means minimal cleaning
• Rinse and dry periodically to remove dust or residue
• Inspect for broken pieces and remove any sharp shards
• Store extra glass in a dry place to keep color vibrant

Who is this for? Hiland RGLASS-CB Cobalt Blend is aimed at homeowners, designers, and installers who want a high-temperature, low-maintenance decorative option for gas fireplaces and outdoor fire pits. It’s a good match for anyone updating a traditional hearth to a contemporary look, concealing burners while enhancing flame visuals, or creating a striking blue accent in a landscape or patio setting. If you need a durable, colorfast material that performs with propane or natural gas and elevates the overall fire feature aesthetic, this 10 lb cobalt blend is a practical and decorative choice.