Black tea is made from the leaves of a bush called Camellia sinensis. A process called oxidation turns the leaves from green to a dark brownish-black color. Oxidation means the leaves are exposed to moist, oxygen-rich air.
Marble is a non-foliated metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Geologists use the term marble to refer to metamorphosed limestone; however, stonemasons use the term more broadly to encompass unmetamorphosed limestone.Marble is commonly used for sculpture and as a building material.eologists use the term marble to refer to metamorphosed limestone; however, stonemasons use the term more broadly to encompass unmetamorphosed limestone.
Marble is a luxurious surface that lends warmth and sophistication. Its price tag, comparative softness and susceptibility to stains mean it's not always used throughout the kitchen. Instead, many homeowners choose to install it on an island or separate baking center to both lower the cost and reduce wear and tear.arble is a luxurious surface that lends warmth and sophistication. Its price tag, comparative softness and susceptibility to stains mean it's not always used throughout the kitchen. Instead, many homeowners choose to install it on an island or separate baking center to both lower the cost and reduce wear and tear.