A kind of stone · also called flagging

3 views: its portrait, and how it looks in the comparison photos.
About
Flagstone is a flat paving stone that weighs about 14.2 ounces (402 g) per US cup in bulk form.
Broken or stacked flagstone has a typical bulk density of roughly 106 pounds per cubic foot (1.7 g/mL). Gaps between the flat pieces cause it to take up more physical space than solid, unbroken bedrock of equal mass. At 14.2 ounces (402 g) per US cup, it is significantly heavier and denser than common garden soil or wood mulch. A standard five-gallon bucket filled with this stone would weigh about 71 pounds (32 kg).
From Wikipedia
A flagstone, or flag, is a generic flat stone, sometimes cut in regular rectangular or square shape and usually used for paving slabs or walkways, patios, flooring, fences and roofing. It may be used for memorials, headstones, facades and other construction.
Read more on Wikipedia →Text from Wikipedia’s “Flagstone” article, CC BY-SA 4.0.
2 on the site
One cup weighs
14.2 oz (402 g)
Quick answer
One US cup of bulk flagstone weighs about 14.2 ounces (402 g). That is nearly twice as heavy as a cup of granulated table sugar.
Typical figures, the same ones every comparison on the site uses; real ones vary.
More like flagstone
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Next to anything: a person, a car, another stone.