The old mine cut is a type of diamond cut that was popular in the 1700s and was most prevalent during the Georgian and Victorian eras. It is similar to today's cushion cut and is characterized by a squarish girdle with gently rounded corners, a high crown, a small table, and a large, flat culet.
Old mine cut diamonds are known for their antique charm and character, and they are often used in vintage-style jewelry. They have a softer, more romantic look than modern diamond cuts, which tend to have more precise geometry and a higher level of brilliance.
Old mine cut diamonds are typically less expensive than diamonds with more modern cuts because they require less labor and material to produce. They are often used as accent stones in jewelry designs or as the main gemstone in vintage-style pieces. Despite their lower price, old mine cut diamonds can still be beautiful and valuable, and they are a popular choice for those who appreciate the unique charm and character of antique jewelry.
Ruby is a beautiful pink to blood-red colored gemstone that is a variety of the mineral corundum (aluminum oxide). The red color of ruby is caused mainly by the presence of the element chromium, which gives the stone its characteristic hue. The name "ruby" comes from the Latin word "ruber," which means "red."
Ruby is one of the four precious stones, along with the sapphire, the emerald, and the diamond. It is highly prized for its beauty and is often used in a variety of different types of jewelry, including rings, earrings, pendants, and bracelets.
Ruby is a very hard and durable gemstone, with a hardness of 9 on the Mohs scale (out of 10). It is resistant to scratches and other types of damage, which makes it a popular choice for use in jewelry.
In addition to its use in jewelry, ruby is also believed to have various healing properties and is sometimes used in traditional medicine. It is thought to have calming and balancing effects, and is sometimes used in meditation practices.
Platinum is a white metallic element that is known for its strength, durability, and resistance to tarnish and corrosion. It belongs to a group of elements called the platinum group metals, which also includes osmium, iridium, palladium, rhodium, and ruthenium.
Platinum is often found in nature as an alloy, which is a mixture of two or more elements. It can be mixed with other platinum group metals or with other elements such as copper, nickel, or cobalt. It wasn't until 1804 that all of the elements in the platinum group were isolated and named, with the exception of osmium, which was not isolated until 1841.
Platinum is a highly prized metal that is often used in the manufacture of fine jewelry. It is malleable, meaning that it can be easily molded and shaped, and it is ductile, meaning that it can be drawn into thin wires or sheets. It is also very strong, which makes it suitable for use in a wide range of applications.
Platinum is named after the Spanish word "platina," which means "little silver." It is thought to have been named this because of its white metallic luster, which is similar to that of silver. Platinum was first discovered by the Spanish conquistadors in South America, near the Pinto River in present-day Columbia.