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Black Granite Boulders 12" Per Each
Black Granite Rock Boulders 12" - 18"
Black Granite Boulders 12" - 18"


 
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Price Per Ton Each $129.99
Material Type: Granite rock from Montana
Level Of Experience Required: Boulders over 150 lbs are best handled by experienced landscape staff
Typical Time Required: Budget 1 Man Hours per boulder and finish work, but placement time varies according to size and location
Equipment Needed: Contractor grade wheelbarrow, or heavy duty upright dolly, hand tools, garden hose
Additional Materials Needed: Decomposed granite, gravel or small stones or rocks to accent the boulder. Cement or mortar if part of complex masonry project

Quantity in Stock:100
Availability:: Usually Ships in 24 to 48 Hours
Product Code: 81888BLD12X18
Qty:

Description Material Transport Photos & Liability
 
Black Granite Boulders 12" Price Per Each
Central California rock quarry shipping bulk throughout Arizona and Southern California. Palleted material in USA is also available.
These boulders are great for landscaping. The color ranges from strong salt n pepper to black grey colors.

Product Specifications and Uses
Boulders, Stones, Cobble and Rip Rap are effective in creating scale, color and texture contrast in open landscapes, dry and wet creek features, waterfalls, ponds. Boulders, Stones, Cobble and Rip Rap are also very effective at steering foot traffic away from primary plantings to prevent damage to plants and worn out sections of the landscape.
About This Material
The black granite known as "Black Academy" comes from the Academy pluton, a 'granite' igneous intrusion at the western edge of the Sierra Nevada mountains. The dark gray to black granite at Academy was formed by magma slowly crystallizing as it cooled below the surface of the Earth. While stone from Academy has long been known as 'black granite' in the commercial stone trade, geologically speaking the black stone from the Academy formation is actually a mafic stone and not a true granite.
Academy granite is not a true 'black granite' but a gabbro. Gabbros similar to those from Academy cover about 60% of the earth's surface, mostly under the seafloors. The earth constantly produces new gabbro rocks similar to black Academy granite. These black and grey gabbros form in an ongoing geological recycling process that has replaced the entire ocean floor over the last 180 million years.

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