The ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum. The red color caused mainly by the presence of the element chromium. Its name comes from ruber Latin for red. Other varieties of gem-quality corundum called sapphires. The ruby considered one of the four precious stones, together with the sapphire, the emerald, and the diamond. All natural rubies have imperfections in them, including color impurities and inclusions of rutile needles known as silk. Gemologists use these needle inclusions found in natural rubies to distinguish them from synthetics, simulants, or substitutes. Usually the rough stone heated before cutting. Almost all rubies today treated in some form, with heat treatment being the most common practice. However, rubies that are completely untreated but still of excellent quality command a large premium. The Price of rubies primarily is by color. The brightest and most valuable red called pigeon blood red, commands a huge premium over other rubies of similar quality. After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone been treated. Cut and carat also determine the price. In the evaluation of colored gemstones, color is the single most important factor. Color divides into three components, hue, saturation and tone. Hue refers to color as we normally use the term. Transparent gemstones occur in the following hues: red, orange, yellow, green, blue, violet, purple and pink are the spectral hues. The first six are spectral hues; the last two are modified spectral hues. Purple is a hue that falls halfway between red and blue. Pink is a paler shade of red. In nature there are rarely pure hues so when speaking of the hue of a gemstone we speak of primary and secondary and sometimes tertiary hues. In ruby the primary hue must be red. All other hues of the gem species corundum called sapphire. Ruby may exhibit a range of secondary hues. Orange, purple, violet and pink are possible.

American Gold Eagle

The American Gold Eagle is an official gold bullion coin of the United States. Over the years, the gold Eagle from the US mint have become the USA’s most popular bullion coin, and our biggest gold coin seller by far. Each 1-ounce gold Eagle contains a full 31.1 grams of pure gold, with an additional alloy of silver and copper, bringing the total weight up to about 33.9 grams. Coins Offered in 1/10 oz, 1/4 oz, 1/2 oz, and 1 oz denominations. U.S. government guarantees them to contain the stated amount of actual gold weight in troy ounces. By law, the gold must come from sources in America, with an additional alloy of silver and copper to produce a more wear-resistant coin of .9167. It authorized by the United States Congress and backed by the United States Mint for weight and content. The market value of the coins is generally about equal to the market value of their gold content, not their face value. Gold Eagles from the U.S. Mint are the most popular gold bullion coin in this country, and now make up over 80% of the U.S. physical gold bullion market. This bullion product has been a tremendous success for the U.S. Mint.; their actual selling prices vary daily based on the current spot price of gold. The face values are proportional to the weights. The one-ounce gold Eagle has a $50 nominal face value, is 91.67% fine gold, and weighs 1.0909 troy ounces. The most popular size bullion coin issued 20 coins per Treasury tube. The half-ounce gold Eagle has a $25 nominal face value, is 91.67% fine gold, and weighs .5455 troy ounce. The least popular size bullion coin, and often the lowest mintage, it is issued 40 coins per Treasury tube. The quarter-ounce gold Eagle has a $10 nominal face value, is 91.67% fine gold, and weighs .2727 troy ounce. About the size of a nickel, it is popular in jewelry. It issued 40 coins per Treasury tube. The tenth-ounce gold Eagle is a $5 face value coin, 91.67% fine gold (22 karat), and weighs .1091 troy ounce. Smaller than a dime, it is a popular small gift item. It issued 50 coins to a Treasury tube. The obverse design features a rendition of Augustus Saint-Gaudens' full-length figure of Lady Liberty with flowing hair, holding a torch in her right hand and an olive branch in her left, with the Capitol building in the left background. The reverse design, by sculptor Miley Busiek, features a male eagle carrying an olive branch flying above a nest containing a female eagle and her hatchlings.