Sapphire - Precious Stone Blue Color Shade

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Sapphire, derivative from the Greek term sapphires , factually means blue. Sapphire is a gem stone whose physical and chemical properties are same as the ruby. With two pyramidal features in the hexagonal system it has been crystallized. It is partially stronger and harder than ruby. Inquisitively, all corundum which are not rubies are grouped as sapphires, which tells that this meticulous gem is available in many colors like blue, green, pink, mauve, white, grey, violet, yellow and orange.
Where do they form?

Sapphires form in feldspathoid- posture igneous rocks beneath drenched with deference to silica. They are capable of also forming into recrystallized mineral and high-grade metamorphic rock that is deprived in silica and affluent in aluminum. This comprises marbles and mica schist.
Composition of sapphire:

Chemical Composition: AL2O3 + Fe
Hardness: It is considered "9" on the Mohs scale of
Refractive Index: 1.762-1.77
Pleochroism:Strong dichroism
Density Around: 4
Birefringence: 0.008
O-isotope composition: between 4.4 and 13.9

Physical Properties :


Color:

There is dissimilarity in cost among sapphires which depends on the color quality, carat size, shine and brilliance. Despite the fact that the most accepted color is blue and pink the preference of color is an individual choice and with sapphire you can discover them in a lot of colors.
Cut:

The most excellent sapphire cuts proffer a depth/width ratio superior than similar diamond cuts. Expect a deepness percentage of 65% to 80% for high-quality. Deep-cut stones as well conserve weight, raising the price of the stone with no predictable raise in the dimension of the circlet.
Clarity:

Blue sapphires have a tendency to have additional insertion than a good number of fancy color sapphires. Gemologists use the expression "inclusion" to describe uniqueness establish within a stone. Inclusion is frequently used as a sign that the gemstone is of natural origin.
Carat:

Gemstones differ in thickness, so a sapphire and a diamond of the similar carat weight are visually diverse dimensions. As sapphires are likely to be heavier, a one carat sapphire is in general to some extent lesser in size than that of a one carat diamond. The typical size for a round sapphire is 6 mm, which is about one carat.

Natural Occurrence :

Best quality is found in Kashmir (India), Pakistan. It is also found in Burma, Australia (Anakie), Sri Lanka, Thailand (Kanchanaburi), Cambodia (Pailin), Tanzania, Finnish Lapland, South India, Northwest Kenya and USA (Montana, Yogo Gulch). .

Available Colors :

Sapphire is available of blue color shad, referring to the gem of the same name. Sapphire gems are most commonly found in a range of blue shades. In modern usage, 'sapphire' refers to a deep vibrant blue. Sapphire blue is the official balloon color of the Korean boy band, Super Junior.