1. Gear
  2. Key Chains / Power Miners

LEGO Gear / Key Chains / Power Miners

Power Miners key chains consists of 4 key chain sets.
Most valuable Key Chains / Power Miners set
852505 Green Rock Monster Key Chain $7.68
LEGO's Power Miners theme, launched in 2009, centers on a team of miners exploring underground caverns to investigate the cause of severe earthquakes. During their expedition, they discover energy-rich crystals and encounter various Rock Monsters. The miners aim to collect these crystals to prevent the monsters from consuming them and causing further seismic disturbances. Complementing the main sets, LEGO released key chains featuring characters from the Power Miners theme. Notable examples include the Boulderax Key Chain (set 852505) and the Meltrox Key Chain (set 852506), both introduced in 2009.
4 items

852862 Firax Key Chain

Theme / Subtheme Gear / Key Chains / Power Miners
Year 2010
Availability Retired
852862 LEGO Firax Key Chain
Retail $4.99
Value $6.76
Growth  +35.5%
Annual growth 3.4%

852863 Duke Key Chain

Theme / Subtheme Gear / Key Chains / Power Miners
Year 2010
Availability Retired
852863 LEGO Duke Key Chain
Retail $4.99
Value $6.15
Growth  +23.2%
Annual growth 1.4%

852505 Green Rock Monster Key Chain

Theme / Subtheme Gear / Key Chains / Power Miners
Year 2009
Availability Retired
852505 LEGO Green Rock Monster Key Chain
Retail $4.99
Value $7.68
Growth  +53.9%
Annual growth 4.4%

852506 Red Rock Monster Key Chain

Theme / Subtheme Gear / Key Chains / Power Miners
Year 2009
Availability Retired
852506 LEGO Red Rock Monster Key Chain
Retail $4.99
Value $6.78
Growth  +35.9%
Annual growth 2.0%

Subtheme Pricing

Retail
$19.96   (for all 4 sets)
New/Sealed
Value
$27.37
Growth
+37.12%
Annual growth
+1.88%
Used
Value
$22.72

Yearly Pricing

Sets
Retail
Value
2010
2
$9.98
$12.91
2009
2
$9.98
$14.46

About LEGO Gear

LEGO Gear encompasses a wide range of lifestyle and accessory products designed to complement the LEGO brand beyond traditional brick sets. This theme includes watches, key chains, magnets, storage containers, apparel, and school supplies, often featuring popular LEGO themes like Star Wars, Ninjago, and Friends. These items allow fans to incorporate LEGO into daily life, offering both functional and collectible products for all ages.

About LEGO Key Chains
LEGO Key Chains feature minifigures, bricks, and other iconic LEGO elements attached to metal keyrings, making them popular collectibles and accessories. Introduced in the 1990s, these key chains span themes like Star Wars, Harry Potter, and Classic LEGO, often including exclusive or modified minifigures not found in standard sets. They serve as both functional items and small-scale LEGO memorabilia.