All diamonds

  • Shape
  • Price
  • Carat
  • Color
  • Clarity
  • Cut
  • Additionally
  • Id
  • Shape
    The most common shape is round with 57 facets, it’s the classics of diamond cutting. The degree of perfection reached by Russian cutters is reflected in the fact that a flawless diamond cut is known across the world as the Russian cut. But there is also a number of other beautiful forms: square (cushion), rectangular (princess, Asscher, emerald, radiant), heart-shaped, pear-shaped, oval, trillion or marquise. Wisely selected shape will allow to maximize the carat weight, deal with imperfections of the stone and make the diamond shine its best. Cutting diamonds is a painstaking craft that requires fine skill and experience. Only optimal shape and ideally preformed cut can fully reveal the dazzling beauty of a diamond.
  • Carat
    The weight of a diamond is measured in carats. This ancient term comes from the name of the seeds of the Ceratonia tree. Hundreds of years ago, long before the invention of a precise scale, traders used seeds of a carob tree, each weighing exactly 0.2 grams, to weigh small objects. The size of a diamond is directly related to the number of its faces and its weight.
  • Per carat
  • Color
    Diamonds gain on different colors because of inclusions of different chemical elements. The variety of colors is huge. Most often you find white diamonds, which can range from completely colorless (denoted by the D letter) to yellow (denoted by Z). In this case, the colorless, the more expensive. A different story is fancy colored diamonds, rich and bright yellow, pink, purple, blue and even red. They do not obey this scale and are evaluated individually by intensity and color depth.
  • Clarity
    The fewer flaws and impurities a diamond has, the brighter is the brilliance. Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can create a variety of internal inclusions and blemishes. Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure, the closer it comes, the higher its value.
  • Cut
    Diamonds are renowned for their ability to transmit light and sparkle so intensely. We often think of a diamond’s cut as shape (round, heart, oval, marquise, pear), but a diamond’s cut grade is also about how well a diamond’s facets interact with light. Precise artistry and workmanship are required to fashion a stone so its proportions, symmetry and polish deliver the magnificent return of light only possible in a diamond. A diamond’s cut is crucial to the stone’s final beauty and value.
  • Age
    Diamonds are a hundred times older than humankind. They are even older than dinosaurs. Their story began two hundred kilometers below the surface of the earth. Subjected to immense pressure and temperature that makes rock melt, atoms of carbon joined in a special way and became unbelievably beautiful crystals.
  • Origin
    All our diamonds are mined in Russia. ALROSA is currently extracting diamonds from 11 Kimberlite pipes and 16 alluvial deposits. Two of the pipes are located in the Arkhangelsk Region in the northwest of Russia. All the other deposits lie in northern Siberia, in the Republic of Sakha (Yakutia).
  • Year
    These days we are able to assign diamonds a unique ID the moment they emerge into the light of day from the ore they were hidden in. This allows us to pinpoint exactly where and when the diamond was mined. And you, in turn, might use the diamond's "birth year" as a reference to a special event in your life.
  • Lab
    Diamond certification is handled by gemological laboratories, which determine whether the diamond's characteristics are up to standard, as well as evaluating its authenticity, price, and provenance. In addition to certification within the Russian grading system, we may also provide an international GIA certificate.
  • Diameter/length
    Diameter / length of a polished diamond is a measurement of a diamond in millimeters, which is defined as an average of several measurements of diameter for rounds or as a maximum measurement in section of a girdle.
  • Width
    Width of a polished diamond is a measurement of a diamond in millimeters, lesser than length, which is defined as a measurement in section of a girdle differently for different diamond cuts.
  • Fluorescence
    Fluorescence is an organic feature to glow in the UV-lights. It emerges when a diamond is born - while its crystal structure is altered due to a whole range of environmental factors. The natural gift is invisible under electric light and only shows inside these gemstones for instance, in a night club. The stunning natural feature of fluorescence can actually improve a diamond’s appearance. Thus, fluorescent tinted gems of yellowish shades look more «colorless» in the sunlight - thanks to a neutralizing inner blue glow.
  • Polish
    Polish is the characteristic that describes the quality of finish of the diamond facets. The finishing process eliminates all surface-level flaws, such as scratches, natural defects, and grinding traces, making the diamond mirror-smooth and radiant.
  • Symmetry
    Symmetry describes the geometric configuration of the gem's facets in relation to one another. Unlike cut quality, this characteristic does not have nearly as much impact on the diamond's brilliance. Nevertheless, if you are choosing between two diamonds with the same clarity and color grades, symmetry might have a part to play.
  • Table
    The table, or plane face, is a flat facet at the top of the diamond. Its size may impact the diamond's appearance and brilliance. The table ratio is the median of the four dimensions, calculated as a percentage in relation to the average girdle. The ideal percentage for a round diamond ranges between 55% and 63%.
  • Depth
    The diamond's height, or depth, is the distance from the table to the cullet. The ratio between this distance and the average girdle outline is calculated as a percentage. The optimal percentage for a round diamond ranges between 57% and 65%.
  • Culet
    The cullet is the lowest part of the diamond's surface. A diamond with a pointed end does not have a cullet. A diamond with an adjusted, sawn-off point has a large cullet. Note that if the cullet is too large, it can easily be mistaken for an inclusion when you inspect the diamond.
  • Added