To identify an antique marble and determine its age, it is important to examine the materials and overall appearance of the marble and assess it closely to determine if it was handmade or machine made. Most marbles from ... More » Science Earth Science Geology

To identify antique collectible marbles, study the colors and patterns of your marbles to determine their types, measure their sizes using a caliper, and use circle templates to check if the marbles are handmade or manuf... More »

Marble identification reference guides are available at Collectors Weekly, Oh Marbles, and to help collectors identify rare and collectible marbles. These reference guides include samp... More »

The best ways to identify and price vintage marbles include determining the marble's origin, condition and manufacturer, classifying the marble into handmade or machine made categories, and researching the marble design ... More »

Shale, marble, mudstone, slate and well-packed sandstone are all examples of impermeable rocks, which means that water cannot easily pass through them. A large number of metamorphic and igneous rocks are impermeable, as ... More »

The mineral content of marble is primarily calcite, as well as smaller quantities of quartz, mica and pyrite. Trace minerals of clay or iron oxides in the marble may affect the color of the rock. More »

Rocks have three main types or classes, which are sedimentary rocks such as limestone, igneous rocks such as obsidian, and metamorphic rocks such as marble. Sedimentary rocks are formed when layers of material accumulate... More »