Mr. Fireglass Fire Glass 10 lb Onyx Black 1/2-inch — Reflective Tempered Fireplace & Fire Pit Glass

Mr. Fireglass 10 Pounds Onyx Black 1/2" reflective tempered fire glass is decorative, heat-resistant glass media designed to replace lava rock or logs in gas fireplaces, fire pits, tables, and landscape accents.

This pack contains 10 pounds of 1/2-inch, high-luster Onyx Black tempered fire glass with a mirrored backing that amplifies flame color and sparkle. The pieces are tempered for heat durability, engineered to resist fading and corrosion, and produce no ash, soot, or smoke when used with natural gas or propane. Beyond fire features, the reflective finish also serves as a polished decorative layer for planters, aquariums, and exterior hardscapes, quietly concealing gas fittings or bare ground.

How will this glass change the look of my fireplace or fire pit?

The reflective backing on each piece catches and magnifies flames, creating richer color and shimmer compared with standard glass or lava rock. Onyx Black offers a modern, low-gloss black that reads elegant by day and metallic when lit.

• Mirrored backing enhances flame brightness and color depth.
• Uniform 1/2" pieces give a consistent, jewel-like appearance.
• Dark Onyx tones modernize traditional brick or stone surrounds.

Is this fire glass safe and durable for high-heat use?

Yes—Mr. Fireglass is tempered through a controlled process to increase strength and thermal resistance, minimizing shattering under typical gas-flame conditions. Because it emits no ash or smoke and resists fading and corrosion, it stays attractive with minimal upkeep.

• Tempered to withstand heat from propane and natural gas flames.
• Low-maintenance: rinse with vinegar and water to clean.
• Does not produce soot or ash like unburned fuels.

How do I install and maintain the 10-pound onyx glass in my setup?

Installation is straightforward: spread the fire glass evenly over the burner pan or cover existing lava rock to the recommended depth for your appliance. Routine maintenance is simple—remove debris and rinse; avoid harsh chemicals that could dull the reflective backing.

• Distribute evenly for consistent flame patterns and airflow.
• Use recommended depth per your fire pit or fireplace manual.
• Clean with a vinegar-and-water rinse to restore shine.

Can I use this glass outside and in decorative projects?

Absolutely—this glass is suitable for both indoor fireplaces and outdoor fire pits, and its decorative finish works well in planters, aquariums, and as ground cover for landscape accents. It hides piping and hardware while resisting weather-related wear when used outdoors.

• Works for fireplaces, fire pits, fire tables, and landscape accents.
• Effective decorative cover for planters, aquariums, and hardscape.
• Designed to endure outdoor exposure without rapid fading.

Who is this for: Homeowners, designers, and DIY enthusiasts who want a modern, low-maintenance alternative to lava rocks or gas logs—people seeking a clean, reflective finish that enhances flames and hides unsightly equipment in both indoor and outdoor gas-fire applications.