To Identify The Authenticity Of The Ruby And Sapphire
Generally known as the red Gem , Sapphire is used to signify the red, blue gem, in fact, the real Ruby (Ruby) and Sapphire (Sapphire) is to achieve gem corundum (corundum is the mineral name), red, sapphire hardness of all minerals in nature, second only in
Diamond , Their chemical components Alumina (Al2O3), colorless when pure, containing 0.9% -4% of the chromium element was red, blue when the iron and titanium; shape of a rhombohedral crystal form in nature often cylindrical (slightly smaller at both ends in the middle thicker) or the hexagonal plate, the appearance of more like barrel; color mainly colorless, red and blue, dark purple-red or orange ruby mainly red, sapphire blue or blue-green primary, other There are green, yellow, pink, brown and other colors; hardness 9; the relative density of 3.99-4.0; as common polyethylene films twins, twin contacts, there will be split management; whole is transparent to translucent, shiny presents
Glass To sub-adamantine luster gloss, ruby significantly in the UV lamp red fluorescence, sapphire majority of non-fluorescent; usually red, sapphire refractive index can reach 1.762-1.778, for the three groups aligned with
Fiber Shaped inclusions of red, sapphire, with plain curved cutting, to produce star effect.
Red, sapphire value measurement Red, sapphire’s value and its particle size, weight, closely related to, the following half-carat gem more common, inexpensive; if more than 1 kt on much more expensive, more than 3 carats will increase geometrically. If greater than 10 carats, while the quality has very good, very rare, worth up to several million dollars.
Generally can be divided into several levels to estimate the value of the following:
0.5 less, fine, very easy to get, very cheap for the group Xiang;
0.5-1 carats, pellets, easy to obtain, can be used as a small ring plane, cheap;
1-2 carats, medium grain, generally affordable, can be used as ring plane
Pendant ; 2-3 carats, large grain, high-value, market demand;
3-5 carats, large grain, high value, rare;
5 over a large grain, high value, very scarce.
Red, sapphire natural products and synthetic chemicals difference
Red, sapphire natural products and synthetic chemicals is very different in appearance, first of all, observe the growth pattern within the gem, Flame Fusion Method for the synthesis of multi-arc, while the natural crystal formation is the straight line. Again, observe the inclusions within the gems, precious stones often contain synthetic flux method failed to melt the melting point and the quality of color caused by small flux residues, in 20 times
Magnifier Under the “worm-like”; sometimes circular bubble and tiny bubbles, and sometimes can be seen falling down on the crucible hexagonal or triangular
Platinum Film. Inclusions in natural gemstones are mostly minor
Rutile Crystal, liquid or fingerprint-like inclusions; also common small cracks. Finally, observe its color, the color is too bright synthetic materials, very uniform, looks a bit dull, dazzling, natural products are relatively soft color.
Cut is also an important factor affecting the value of
Red, sapphire is also very particular about the cut, faceted and plain including two major categories; shape oval, round, emerald-shaped, pear, olive and mixed forms, etc.. The most popular is the hybrid form, that is, wide oval. Unlike diamonds cut as strict evaluation, generally do not account for a significant component of the value of precious stones, but if cut too bad, it has greatly affected its value.
Good cut stress three points: 1. Cut Position: As the red, sapphire is anisotropic, with multicolor. Cutting should be strictly perpendicular to the long axis of the table to avoid the multicolor effect of making finished products from the countertop to see the most pure, saturated colors, this is the correct orientation.
I am an expert from Mp3 Player Manufacturers, usually analyzes all kind of industries situation, such as automatic battery chargers , 6v solar charger.
Processing your request, Please wait....
