Crushed stone comes in several grades, and some of the most popular grades are #5, #67, #1, #8, #3, #10, #57 and #411. Crushed stone is used primarily in construction, while homeowners commonly use grade #57 for driveway... More »

The most common size is grade 5 crushed stone, which contains pieces of stone that are typically no larger than 1 inch. Crushed stone grades 57 and 67 are also commonly used for driveways and construction and contain pie... More » Home & Garden Home Maintenance Building Materials

Individual diamond prices vary and depend on the characteristics of each stone. Established in the 1940s, the grading system currently in use weighs each stone's color, clarity, cut and carat weight in determining its pr... More »

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A diamond's value is determined by cut, color, clarity and carat weight, so the mounting's metal, such as white or yellow gold, may influence the color and appearance of the stone, but not its value. Diamonds are graded ... More »

To determine if a diamond is real, test it with a diamond testing device that also tests for electrical conductivity within a stone. You can also place the stone over printed text as diamonds refract too much light to al... More »

The numbers and letters on jewelry indicate the metal and karat weight of the jewelry, and sometimes the stone. The exceptions are the low numbers, 6 through 10, because those are ring size marks. More »

Onyx is viewed as a powerful protection stone, and it is said to absorb negative energy from other people. The onyx stone releases mental stress and promotes emotional well-being. More »