Curium does not occur naturally on Earth and is typically produced by bombarding uranium or plutonium with neutrons in nuclear reactors. The pure element is hard, brittle, malleable, and appears a lustrous silvery white.

Curium is a hard, brittle, silvery radioactive metal that tarnishes slowly and which can only be produced in nuclear reactors. The isotope 242Cu was produced in 1944 by Glenn T Seaborg, Ralph A James and Albert Ghioso by bombarding 239Pu with alpha particles in the 60-inch Cyclotron at Berkeley University in the US.

Facts About Curium

• Atomic Number: 96 Atomic Symbol: Cm Atomic Weight: 247 Melting Point: 2,453 F (1,345 C) Boiling Point: 5,612 F (3,100 C)
• Word origin: Curium is named after chemist and physicist Marie Curie and her husband, Pierre Curie, who were pioneers in understanding radioactivity.

Curium is an extremely hazardous substance. If taken into the body, it tends to concentrate in the bones, where the radiation it gives off kills or damages cells and can cause cancer.

Curium is a dense and hard transuranic element that is silvery-white in appearance. Curium is the most radioactive element that can be isolated. It is so intensely radioactive that it boils water, making its chemistry difficult to study. It also glows in the dark (see right).

Curium oxidizes easily. It has multiple oxides and forms highly fluorescent complexes with different organic compounds. This metal is very dangerous. It can accumulate in the liver, lungs, and bones and cause cancer.

Curium is a hard, dense radioactive silvery-white metal. It tarnishes slowly in dry air at room temperature. Most compounds of trivalent curium are slightly yellow in color. Curium is highly radioactive and it glows red in the dark.

S

Gold has a golden to yellow color. Most native gold is alloyed with silver, and if the silver content is high enough, the specimen will have a whitish yellow color. C) Shape: Pyrite is usually found as angular pieces, and many of them exhibit the faces of a cube, octahedron or pyritohedron.

To be described as ”gold” or “golden” an object must have not only a yellow colour, but also a metallic lustre. So, “gold” isn’t just a colour, while”yellow” is. A slight complication comes from the heraldic colour “or”, which means “gold”, but is in fact just yellow.

Pure gold is 24K and has a bright yellow color. Pure gold is the most expensive: The lower the karat number, the less gold there is in the alloy, and thus the lower the price.

Yellow gold is described as such because of its yellow colour which is a result of it being alloyed with silver and copper.

Often more affordable than other metals because copper—the alloy used to make rose gold—costs less. Very durable due to the strength of copper—making rose gold tougher than yellow or white gold. A complement to all skin tones.

22 karat

14K Rose Gold This color is created through the alloy. By blending gold with copper and other precious metals such as silver, the yellow gold takes on a more pink color. 14k rose gold, by definition, contains 58.5% pure gold. The additional copper creates a rosier, brighter pink color which is desired by customers.

14k gold is more affordable than 18k since it contains less pure gold in the metal, and because it contains a higher percentage of alloyed metals it provides more durability and resistance to wear and tear. 14k gold can be an excellent choice for those with more active lifestyles.

Gold Alloys When jewelry gold is created, it is an alloy of pure gold and another metal. However, this does not make rose gold more or less expensive than yellow gold. Since 14k or 18k rose gold contains the same amount of pure gold as 14k or 18k yellow gold, they are essentially worth the same as their counterparts.

WHAT EXACTLY IS 14 kt ROLLED GOLD ? ‘Rolled gold’ which is also known as ‘gold-filled’ or ‘gold fill’ is a material that has 1/20th of pure 14 kt gold content by weight.

9 karat

Modern rolled gold jewelry should always have a stamp that indicates how much gold is used and its level of purity. Often times the letters “RG” indicate that the metal used is rolled gold. Sometimes pieces have “RGP” instead, meaning “rolled gold plate.”

What is Rolled Gold? The process is fairly simple, usually two sheets of gold are used to sandwich another metal, most commonly copper or brass, but in some cases silver. This sandwich is then heated to bond them and then rolled out to form the raw material used to make the jewellery.