Ruby is a valuable and extremely sought soon after red gemstone which ranges in shade from pink to blood crimson. It is considered to be among the most worthwhile gemstones on earth and is blessed with all the characteristics that a valuable gemstone need to possess viz. spectacular colour, exceptional hardness and longevity, scintillating brilliance, and excessive rarity.
A ruby is composed of the mineral aluminium oxide (Al2O3) which is commonly recognized by the identify of corundum. Trace quantities of metallic impurities (that of chromium) in the crystal structure of corundum provides the gorgeous pink tint to this enchanting gemstone. Quite rightly called 'Ratnaraj' or the king of gems in Sanskrit, rubies are often conspicuous by their majesty.
Its color is its most basic and discernible house and the name ruby by itself is derived from the Latin word ruber which indicates crimson. The pink of the ruby is very significant as on one particular hand crimson epitomizes vigor, willpower, anger and bravery whilst on the other hand it embodies pleasure, sexuality, enthusiasm and adore.
Gem good quality corundum of any other color is known as a sapphire.
The colors of a ruby consist of pinkish crimson, purplish pink, orangish purple and brownish pink dependent on the trace contents of chromium and iron in the stone. The volume and range of trace mineral in a ruby differs with the geologic development that developed it. For this reason, the location of origin these kinds of as Burmese and Thai are at times employed to describe the colour.
ruby ring comparisons have a propensity to be purplish purple in shade while the Thai stones are significantly a lot more brownish red.
Rubies exhibit pleochroism which indicates that the coloration varies with the course of viewing.
Virtually all gems in the gem business go via some form of therapy or other for improvement of clarity as effectively as the tone and saturation of coloration. Some stones are handled with oils although the corundum varieties of gemstones namely the rubies and sapphires are generally provided warmth remedy. Clarity and colour of sapphires and rubies are improved considerably with heat therapy.
If you want a all-natural untreated ruby you need to insist on a testimony from a recognized gem testing laboratory like the AGTA Gemological Tests Heart attesting that the stone reveals no signs of warmth alteration. But you have to spend a high quality for the pleasure. Moreover, fundamental heat treatment method of rubies is an proven follow in the gem market so extended as it is overtly disclosed. The therapy does not radically reduce the benefit of the gem.
Like a diamond, the price of a ruby is established by the four Cs, particularly coloration, clarity, minimize and carat fat. Primarily, the correct really worth of a ruby is identified by its shade. The most excellent pigeon blood-red rubies command the greatest price more than the other rubies of similar quality. Shade is followed by clarity and a clear ruby will command a high quality. But a wholly distinct ruby without having having any needle-like rutile inclusions makes it suspect. It may well point out that the stone has been dealt with or it may well even be an artificial lab cultivated ruby. Minimize and carat weight also influence the price tag of a ruby.
Typically, the inclusions in a ruby (which diminishes its clarity) can in simple fact enhance its benefit. The silk, which is so typical in corundum, can, if sufficiently abundant, and precisely arranged, lead to asterism. With ideal reducing (only witnessed in cabochon cuts) this produces star rubies.
Rubies exhibiting asterism are identified as "Star Rubies", and if clear are highly prized. Usually star rubies exhibit 6 ray stars. But in strange cases twelve ray stars can also take place.
The plentiful tiny rutile needles in a star ruby are precisely established in such a way that they are aligned perpendicular to the rays of the star. These wonderful gems demonstrate a sharp six-rayed star which glides majestically across the surface of the gem as the gentle moves or the stone is rotated. The star is very best visible when witnessed in a solitary mild supply this sort of as sunlight.