Diamond Pearl Sapphire 18k Platinum Deco Brooch 8335-1981

Old-mine-cut diamond

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.

Rose-cut diamond

The rose cut is a type of diamond cut that was popular in the 1500s and remained common during the Georgian and Victorian eras. It is characterized by a flat bottom with a dome-shaped crown that rises to a single apex, giving the diamond a shape that resembles a rose bud. Rose cut diamonds can have anywhere from 3 to 24 facets, which are small, flat surfaces that are cut into the diamond to create a specific shape and enhance its sparkle and brilliance.

Unlike modern diamond cuts, such as the round brilliant or princess cut, the rose cut has a lower crown and a less brilliant appearance. It is a more primitive diamond cut that was used before the development of more advanced cutting techniques. However, it is still a popular choice for collectors of antique jewelry and for those who appreciate the timeless beauty of vintage cuts.

Rose 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, rose 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.

Sapphire

Sapphire is a mineral made from aluminum oxide that is known for its beautiful colors, including blue, pink, yellow, green, purple, and orange.

The most popular variety of sapphire is blue sapphire, which has a medium to deep blue color and strong saturation. Blue sapphire is typically the most popular and most affordable of the three major precious gemstones (emerald, ruby, and sapphire) and is often used in a variety of different types of jewelry, including rings, earrings, pendants, and bracelets. Fancy sapphires, which are available in a variety of different colors, are often more rare and expensive than blue sapphires and are prized for their unique and beautiful colors.

Sapphire is a very hard and durable gemstone, with a Mohs hardness of 9 out of 10, which makes it resistant to scratches and other types of damage. It is also believed to have various healing properties and is sometimes used in traditional medicine and meditation practices.

Pearl

Pearls are small, round, and lustrous objects that are produced by certain types of mollusks, which are invertebrate animals that belong to the phylum Mollusca. Mollusks include a wide range of species, including oysters, clams, mussels, snails, and octopuses, among others.

While all mollusks have the ability to produce pearls, only a few varieties are able to create gem-quality pearls that are suitable for use in jewelry. These include the oysters that produce akoya pearls, the freshwater mussels that produce freshwater pearls, and the South Sea and Tahitian pearls, which are produced by large saltwater oysters.

Pearls are formed when an irritant, such as a grain of sand or a parasite, enters the mollusk and becomes trapped inside its shell. In response to the irritant, the mollusk secretes a substance called nacre, which coats the irritant and eventually forms a pearl.

The quality of a pearl is determined by a number of factors, including its size, shape, color, and luster. High-quality pearls are prized for their beauty and are used in a variety of different types of jewelry, including necklaces, earrings, and bracelets.

18k

18k gold is a type of gold alloy that is commonly used in jewelry making. It is made up of 75% gold and 25% other metals, such as copper, silver, or palladium. The addition of other metals helps to increase the durability and strength of the gold, making it more suitable for use in jewelry. 18k gold is softer and more prone to scratching than higher karat golds, such as 22k or 24k, but it is still a popular choice for jewelry because of its warm, yellow color and good resistance to tarnishing. It is also less expensive than higher karat golds due to the smaller amount of gold used in the alloy. 18k gold is a popular choice for engagement rings, wedding bands, and other fine jewelry items.

Platinum

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.