At Sotheby's set a record price for jewelry with rubies

[Кирилл Сызранский]

Сообщение от fross

And yet the best companion in this kind of clothes from a satellite with a platinum credit card

Or zolotomi teeth! Discounts will be generous!

[NATA NOVA]

Сообщение от fross

And yet the best companion in this kind of clothes from a satellite with a platinum credit card

and "talk"?

[uriart]

sergejnowo, something you are tales ponarasskazyvali about diamonds!
People who are ignorant will believe you and go looking for them. And they will not find so cheap, because it does not happen!
Even on the black market the stones are much higher than the price you mentioned.
Do not know the topic, do not invent.

[Кирилл Сызранский]

uriart, here given the same reference sergejnowo
http://www.bader.de/index.asp?smSess...g=\\u0026popup =
For example, I looked. Saw the price. However, I am in these things is not the ear, no mug, but the numbers I see something and so able to understand the text. Can you look?
Look, tell me then.

[Евгений]

Сообщение от uriart

!
People who are ignorant will believe you and go looking for them. And they will not find so cheap, because it does not happen! Even on the black market the stones are much higher than the price you mentioned .....

Yura, you're right that's the real prices ..
RULE OF FOUR "C":
When choosing a diamond jewelers usually recommend the four "C", from the British carat (carat, ie, weight), color (color), clarity (purity) and cut (cut).
The main indicator, of course, weight. The more, the more expensive.
A good diamond should be colorless. If the stone is an ideal color is placed in the water, it becomes invisible. Hence the concept of a diamond "pure water".
The highest grade in color - the first. Russia's diamonds are medium in size usually falls short of the first and second class.
Clean the stone is determined by the absence of internal defects - cracks, inclusions. According to the accepted classification of the first class - also the most expensive. In stones with a low purity of the defects can be seen through an ordinary magnifying glass. And on this indicator averages diamonds correspond to 3-4 classes.
Cut - a decorative element, but often determines the choice of the buyer. Here, apart from the competition - the classic "round" shape. Be sure to indicate the number of faces. Self distinguish a fake diamond from a real buyer - impossible task. If the stone is of normal size, a guarantee of its authenticity is the shop's reputation. You can order an independent examination of gemology.
Price issue. If the price list stated - 1Kr57-0, 24 1/5A - this means: a round stone, 57 facets, weighing 0.24 carats. Its color corresponds to the 1 st class, and cleanliness - 5A class. Such a ring worth about 20 thousand rubles.
is the leader in sales of Russian People in the 0.1-carat diamond, the price for medium quality characteristics - around 7 thousand rubles. 0.5 carat diamond in a thousand will pull a 140, and a 1 carat will have to fork out for 500-600 rubles.
Russia's system evaluation diamonds.

Читать дальше... 

Russia diamond appraisal system is based on the technical conditions (TC 117-4.2099-2002), effective April 2002.

Score cut. The standard adopted by the round cut with 57 facets (K-57), there is also a round 17-facet cut (K-17), which is used for small stones. TU sets the ranges of geometric parameters of cutting, which round diamonds Kp-57 can be divided into groups (in descending order of geometric parameters, symmetry, quality of polishing) "A", "B", "B", "G", and Cr - 17 - into two groups - "A" and "B". Diamonds known fancy-cut diamonds are divided into two groups - "A" and "B". Diamonds fancy-cut diamonds with non-traditional number and location of the faces belong to a group cut "B".

Weight of a diamond measured in carats up to the second decimal place. To calculate the mass of stone, laid down in jewelry, apply special formulas.

There are three weight groups of diamonds: small (weighing up to 0.29 carats), medium (from 0.30 to 0.99 carats) and large - 1 carat and above.

Evaluation of color. Diamonds are classified by groups of color from colorless, with a gradual increase in the saturation of yellow, brown, gray shades. Bands color depends on the weight. Small diamonds Kr-17 are classified to 4 groups of color (1 - colorless stones). Small diamonds Kr-57 is classified to 7 groups of color (1 - colorless stones). Medium and large diamonds are classified according to the 9 major groups of color (1 - colorless stones) (see table), while in 6, 8 and 9 have identified a number of subgroups: 6 and 6-1, from 8.1 to 8.5, from 9.1 to 9.4 (eg, 8-2 - slightly stained yellow, or 8.5 - yellow). With fancy colored diamonds are the first group of colors. I would like to note that diamonds weighing 1 carat and above the characteristics of 1 /1 there is little for sale. Stones with such characteristics is more expensive than diamonds with the characteristics of 4 /4 several times and may not be affordable for even very wealthy people. At the same time outwardly diamonds 1 /1 and 4 /4 is absolutely not differ from each other.

Assessment of purity. Diamonds are classified into groups of purity depending on the availability of internal characteristics (inclusions, cracks, surface defects, the removal of which would result in significant weight loss), their number, location and color (recorded characteristics, visible in the magnifier 10-fold increase). The number of groups of purity depends on the weight. Thus, small diamonds Kr-17 are classified by 6 groups of purity, and small diamonds Kr-57 - to 9 groups. For medium and large stones there are 12 groups of purity (see table). The table shows that the diamond with a purity of 5 for diamonds weighing 0.29 carats corresponds to the purity of 7 for medium and large stones. Ie barely visible to the naked eye and color defects are found only in the characteristics of 7 /7 (for medium and large stones). Trained eye without the aid of instruments to notice the defects and color characteristics in the 6 /6. Therefore, when buying large stones is wise to pay attention to the color and size, are striking.

The final grade of a diamond is written in the following way: for example, Kr-57 0.35 3/4A. This means: brilliant-cut diamonds with 57 facets, weighing 0.35 carats, is the 3rd group of colors, 4-th group of purity, the group cut - A.

GIA system for evaluating diamonds.

Cut - cut stone.

The quality of diamond cut, perhaps the most important component of all four, which influences the price of a diamond, as correctly processed stone looks very beautiful, it is observed glitter and "game". When properly cut diamond, the light passes through the area of the crown, played between the pavilion and falls back through the area completely or almost completely reflected from the internal faces. If the cut fails, then the light passing through the area, quickly reaches the pavilion and the "leaks" through one of them, or escapes through the opposite bottom edge of the diamond, not having an impact. The less light refracted inside the stone goes back, the less brilliance of your diamond.

Most experts in precious stones converge in the view that the best cut diamond is based on a formula that allows the stone to give maximum brilliance. These formulas can be understood by examining the proportions of diamonds, but more importantly the depth correlates with the diameter of the diamond and the diameter of the area corresponds with the diameter of the diamond.

Experts in the field of classification cut diamonds have developed a table to help jewelers, with which you can make diamond an ideal proportions. According to this table diamond cut (by GIA) can be divided into the following categories: Ideal (Ideal), Excellent (Premium), very good (Very Good), Good (Good) and benign (Poor).

The ideal cut is intended to give the maximum brightness of the diamond and such diamonds usually have a smaller market, which gives an additional advantage: the stones of such large capacity to diffuse the light. This category has the cut applies only to round diamonds. Round cut diamonds with the category "Premium" faceting equivalent "ideal" with a wider platform and slightly altered angles of the crown and pavilion. Diamonds with a cut "very good" reflects much of the light that passes through them, creating a sufficient level of brightness. Diamonds with a cut obtained as a result of the fact that the cutter slightly deviate from the prescribed proportions of the diamond to the output to obtain a sufficiently large weight on the diamond. As a result of these diamonds are deviations in the size of area or width of the girdle, although other parameters coincide with the parameters of diamonds category "Ideal" or "Premium". Cut the category "Good" means that the stone reflects a lot of light passing through it. Proportions deviate from ideal, since the choice made in favor of a larger diamond when cut and not cut all the excess to get a small stone category "Premium".

Clarity - Clean stone.

When it comes to the purity of the diamond, we are referring to the presence of the distinguishing characteristics of the outside and inside the stone. Although most of these characteristics - part and parcel of rough diamonds originated in the earliest stages of formation of the crystal under the ground, although some of their number appears as a result of the impact of intense pressure faced by diamond cut in the process. If you imagine the incredible pressure, through which emerges a diamond, it is not surprising that many diamonds have cracks, inclusions, flaws, air bubbles and mineral particles of alien species, both at the surface and inside the stone. Assessment of purity is made with 10-fold increase in the magnifying glass, taking into consideration the size, number, location and color of internal characteristics, and in some cases, surface defects, which can not be removed by perepolirovke without significant loss of weight of stone. All other things being equal, no internal characteristics of diamonds are considered more valuable. In the evaluation system of GIA distinguished 11 groups of purity: from "Internally flawless - a diamond that has no absolutely no flaws and inclusions, even at 10-fold increase and ending with" imperfect "- a diamond, whose present serious defects and inclusion visible to the naked gaze.

F and IF (Flawless and Internally Flawless) - Pure and Internally clean. In such diamonds are no internal inclusions or they can not find pri10-fold increase. Very rare.

VVS1 and VVS2 (Very Very Small Inclusions) - barely noticeable inclusions. It is very difficult to detect with 10-fold increase.

VS1 and VS2 (Very Small Inclusions) - barely noticeable inclusion. Fine inclusions visible to the naked eye and difficult to be detected with 10-fold increase.

SI1 and SI2 (Small Inclusions) - Small inclusions. Tiny inclusions, which can be detected with 10-fold increase and in some cases (SI2) inclusion visible to the naked eye.

I1 and I2 and I3 (Imperfect) - Noticeable inclusions. The inclusions are visible, as with 10-fold increase, and the naked eye.

Color - color of the stone.

Speaking of the color of a diamond, jewelers usually have in mind the presence or absence of color in the "white" diamond. Color depends on the chemical composition of the diamond and with the passage of time does not change.

Due to the fact that the diamond devoid of color, like clear glass it passes through a more light than colored stone, colorless diamonds of more sparkle and play of light reflections. Owing to the peculiarities of the formation of diamonds, only a few instances are truly colorless stones. The more colorless "white" diamond, the higher its value. In fancy colored diamonds color, these rules do not apply. These diamonds have a bright fancy colors - blue, pink, red, yellow, green. They are very rare and their price several times, and sometimes by orders of magnitude greater than the cost of "white" diamonds.

Assessing colourlessness diamonds, jewelers, many have resorted to professional color scale companies GIA, which is divided into groups, ranging from completely colorless diamonds and more with increasing saturation of the yellow hue to the last group for the diamond with yellow color. Each group is denoted by the letter of the Latin alphabet from D - colorless diamonds up Z - yellow diamonds. For this scale assess the color of stones with a brown tint, with consideration being given to rich brown color. Evaluation of the color of a diamond is reduced to the determination of color. The color yellow and brown stones with a characteristic color below Z is considered fancy. For a fancy color diamond has its own team colors, with the characteristics of such stones use the word fancy (fantasy), then describe the color and its intensity. To assess the color of diamonds used a set of standards.

 

[fross]

Сообщение от sergejnowo

Seriy, No offense.
You no sign of emotion in the topic, though I think only to be disappointed.
Really expensive diamonds, those that are clean, - "flawless" ie without inclusions and absolutely colorless "River"
Yellow and black are the cheapest.
Diamonds are still classroom theme for divorce.

And that Graff introduced the fashion colored diamonds . "And the colored sapphires incidentally also his protege.

[Евгений]

Сообщение от sergejnowo

Optavaya price in Europe of the diamond (standard grinding, doing so and so machine), the size of a 1 carat in high purity and whiteness, is 80 - 100 euros.

And in Russia the cost phianites 1 carat 100-150