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Cobalt Blue Fire Glass Rocks, 3/4 in, 10 lb Fire Pit Fill

Cobalt Blue Fire Glass Rocks, 3/4 in, 10 lb Fire Pit Fill

Regular price $54.99 USD
Regular price Sale price $54.99 USD
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Free tracked shipping · arrives in 5–12 business days

  • 30 day returns — unused and in original packaging
  • Damaged in transit? Free replacement or full refund — just tell us within 7 days
  • Buy 2, save 5% · Buy 3+, save 15% — applied automatically at checkout
  • Color goes all the way through. The cobalt tone runs through the glass, not a painted coating.
  • Made for high heat. Made to take high heat without cracking or darkening.
  • No smoke or ash. Burns with no odor, no smoke and no ash to sweep out.
  • Generous 10 lb bag. 10 lb (about 4.5 kg) of 3/4 in smooth flat-round pieces.

Description

  • 10 lb (about 4.5 kg) of cobalt blue fire glass.
  • 3/4 in (about 1.9 cm) smooth flat-round pieces.
  • Processed from quartz sand; color runs through the glass.
  • For backyard fire pits, patio fire tables and indoor gas fireplaces.
  • Spread across the burner pan in place of ceramic logs or lava rock.

Features

  • 10 lb of cobalt blue fire glass
  • 3/4 in (about 1.9 cm) smooth flat-round pieces
  • Color runs through the glass rather than a surface coating
  • Made to take high heat without cracking or darkening
  • For fire pits, fire tables and indoor gas fireplaces

Materials & care

Materials: Glass processed from quartz sand.

FAQ

How much is in the bag?
10 lb (about 4.5 kg).

How big are the pieces?
About 3/4 in each, in a smooth flat-round shape.

Where can I use it?
In a backyard fire pit, a patio fire table or an indoor gas fireplace, spread across the burner pan.

Is the color painted on?
No. The cobalt color runs through the glass.

What colors are available?
Blue.

View full details
Cobalt blue fire glass spread over the burner pan of a patio fire table on a backyard deck

A Modern Fill For Any Burner

Decorative media gives a fire pit or fireplace a clean, modern look in place of ceramic logs or lava rock.

This 10 lb fill of cobalt blue rounds spreads across a burner pan in a backyard fire pit, a patio fire table, or an indoor gas fireplace.

The pieces catch daylight with a deep blue shine and hold a warm glow after dark, so the feature looks finished whether or not the burner is lit.

Macro close-up of cobalt blue quartz sand glass rounds with tumbled edges

Quartz Sand Glass, Colour All Through

Each piece measures about 3/4 in, or 19.05 mm, and is processed from quartz sand into a smooth, flat-round shape.

The cobalt tone runs through the material rather than sitting on the surface as a painted coating, and the tumbled edges keep the fill easy to handle while you level it out by hand.

Massed together, the rounded pieces reflect light from many angles and read as one deep blue surface.

Cobalt blue fire glass rocks, 3/4 in flat-round pieces, 10 lb fire pit fill

Spread It Level, Rinse It Clean

The glass is made to take high heat without cracking or darkening, and it burns with no odor, no smoke and no ash to sweep out afterward.

Spread the rocks in an even layer over the burner and keep the depth consistent so the flame pattern stays regular.

To clean, rinse them in a one-to-one mix of water and vinegar, then let everything dry completely before it goes back in the pit, since trapped moisture can lead to cracking. Between seasons the fill stores compactly.

Specifications

Weight10 lb (4.5 kg)
Piece size3/4 in (19.05 mm)
ShapeFlat-round with tumbled edges
ColorCobalt blue
MaterialQuartz sand glass
Colour finishRuns through the material, not a surface coating
Heat ratingRated for high-temperature use
BurningNo odor, smoke or ash
Use withBackyard fire pit, patio fire table or indoor gas fireplace
CareRinse in a 1:1 water and vinegar mix, then dry fully

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Frequently Asked Questions

How much glass is in a pack?
Each pack is a 10 lb fill, which is 4.5 kg.
How big are the individual pieces?
Each piece measures about 3/4 in, or 19.05 mm, in a smooth flat-round shape.
Where can I use it?
It spreads across a burner pan in a backyard fire pit, a patio fire table, or an indoor gas fireplace.
Will the colour burn off?
The cobalt tone runs through the material rather than sitting on the surface as a painted coating, and the glass is made to take high heat without cracking or darkening.
Does it make smoke or ash?
No. It burns with no odor, no smoke and no ash to sweep out afterward.
How do I clean it?
Rinse the pieces in a one-to-one mix of water and vinegar, then let everything dry completely before it goes back in the pit, since trapped moisture can lead to cracking.