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August 31, 2021 The form of cutting stones in jewelry is an entire art, the development of which
Jewelry art is the making of various products, usually from precious metals using
Post updated: Oct 9, 2020 Gold is very rarely used in its pure form. Usually the product
Surgical medical steel jewelry, also known as
77 Iridium Ir 192.217 4f145d76s2 Iridium (lat. Iridium, denoted by the sign Ir) - chemical
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Gold (Au, from the Latin Aurum) is a chemical element that is in Group I of the Table
Post updated: Jun 6, 2020 In ancient times, gold was tested in the simplest and most reliable way
What is a mole? Before we talk about how to find the molar mass of a substance, let’s define
A ring with a black stone has always looked luxurious and elegant. The shine of the frame harmonizes perfectly with
