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.

Loose Stones for Sale

Loose Stones for Sale for jewelry making and investment purposes are here. Four stones are precious stones: diamond, emerald, ruby, and sapphire. Everything else falls under the category of semi-precious stones. All of the stones come with a certificate. Diamonds grading system based on the concept of the four C’s: color, cut, carat, and clarity. Clarity is determined by placing the diamond under 10X magnification. With the proper cut, the diamond will sparkle. Clarity and color are next in importance. All other gemstones grade with the naked eye. The best prices on high quality loose stones. The quality of all loose colored stones based on the clarity and brilliance of the stone’s color, which divided into three parts: hue, saturation, and tone. Hue refers to the stone’s color, which produced in the following spectral hues: red, orange, yellow, green, blue, violet, purple and pink. Purple and pink are spectral hues, as purple lies halfway between red and blue, and pink is really a lighter shade of red. Natural stones seldom have pure hues, so these are into primary, secondary, and sometimes tertiary hues. Saturation refers to the clarity of color, or the stone’s freedom from brown or grey hues. For jewelry making and investment purposes are here. Four stones are precious stones: diamond, emerald, ruby, and sapphire. Everything else falls under the category of semi-precious stones. All of the stones come with a certificate. Diamonds grading system based on the concept of the four C’s: color, cut, carat, and clarity. Clarity is determined by placing the diamond under 10X magnification. With the proper cut, the diamond will sparkle. Clarity and color are next in importance. All other gemstones grade with the naked eye. The best prices on high quality loose stones. The quality of all loose colored stones based on the clarity and brilliance of the stone’s color, which divided into three parts: hue, saturation, and tone. Hue refers to the stone’s color, which produced in the following spectral hues: red, orange, yellow, green, blue, violet, purple and pink. Purple and pink are spectral hues, as purple lies halfway between red and blue, and pink is really a lighter shade of red. Natural stones seldom have pure hues, so these are into primary, secondary, and sometimes tertiary hues. Saturation refers to the clarity of color, or the stone’s freedom from brown or grey hues.