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It all comes down to rarity and demand. Granite rocks with unique patterns or rare colorways like red, purple, and blue are more expensive than traditional designs. Some types of blue granite are extremely rare, like Azul Aran and Blue Bahia, driving the price up even further. The most expensive type of all is a unique design called Van Gogh granite. As the name suggests, it sort of looks like a painting. 

There are a few ways to remove calcium buildup in your pipes, but the most natural option involves vinegar, baking soda, and boiling water. To use this method, pour 1/2 cup of vinegar down the drain you're trying to clear, then follow it up with 1/2 cup of baking soda. Place a rag over the drain to create a light seal and leave it for 30 minutes. Remove the rag, then pour a pot of boiling water into the drain. After the water drains, wipe everything down with a sponge.

Engineered quartz is an artificial, nonporous material made from a mix of mined ground quartz, polymer resins, and pigments, making it a lower-maintenance option. In contrast, quartzite is a natural stone composed of sandstone, which makes it highly resistant to heat but often requires sealing and more careful upkeep. You should clean both types of stone with non-abrasive cleaners that have a low or neutral pH, avoiding acidic cleaners like vinegar, as well as wire brushes and scouring pads.

You can cut food on tough, scratch-resistant granite countertops. However, these hard surfaces can quickly dull your knife blades, and continual cutting in the same spot can eventually lead to marks forming and compromising the protective sealant. As with any countertop material, it’s always best to use a chopping board.