Old mine

Old mine
Making an impression of nobleness, exclusivity and a refined style
58
facets
D-O
colour
FL-SI
clarity

The antique Old Mine cut designed in the 18th century is one of the earliest variants of the so-called brilliant cut. This diamond has all the facets typical to the contemporary round brilliant cut, but they have different arrangement and dimensions. By its form, the Old Mine diamond is not round; it has curved edges, thanks to which outwardly it appears as a smoothen square.

Side view

Pavilion view

Top view

The characteristic features of the Old Mine diamond are a small table, a high crown and a big culet. Due to this configuration the stone visually looks bigger as it is in reality.

Originally, the Old Mine cut diamonds were made virtually by hand therefore, they usually did not yield the sale luster and fire as present-day polished. An ample quantity of these stones have been incrusted into the Great Imperial Crown of the Russian Empire kept today in the Diamond Fund of the Russian Federation.

The Old Mine diamonds polished with the use of state-of-the-art technologies distinguish themselves by a more perfect form, better facet geometry and miraculous fire, at the same time carrying a mystical message of contacting the olden times.

Today, one may come across these stones in rare and exclusive diamond jewellery with creating an impression of nobleness, exclusivity and a refined style. Old Mine cut diamonds look perfect in rings as solitaire stones, as well as a central diamond surrounded by smaller round brilliants.

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More about diamonds colour

Diamonds colour

The colour of a diamond is the degree of its colourlessness, the less hue possesses the stone – the better it is perceived by the viewer, the more expensive it is valued.

Polished diamonds – from colourless to yellowish or yellowish brown – are grouped into categories briefly described below. Well-trained professionals perform the colour grading procedure – by way of comparing a specific diamond to master stones.

Fancy coloured diamonds (blue, red, pink, and others) are very rarely found, and require an entirely different grading system – from Faint and Very Light to Fancy Deep and Fancy Vivid. Higher grade fancy diamonds have a greater monetary value.

At Kristall a unique and proprietary patented system of diamond grading is employed. It’s corresponding to the

More about diamonds clarity

Diamonds clarity

For diamonds, as well as for the majority of other natural minerals, inclusions, imperfections or blemishes are quite common. Depending on their character, location and degree of manifestation, polished diamonds are categorized by clarity grades.

In the process of the expert grading, the quantity, size and location of the inclusions and their appearance (colourless, coloured, garish, and dark), their nature (blisters, crystals, fractures) and type (dotted, diffused, large) are to be determined. The less inclusions a stone has – the more valuable it is.

However, one must bear in mind, that the presence of characteristic inclusions has one very important positive aspect: they are an unambiguous indication of the natural origin of the stone. It is no secret, that today, enormous amounts of synthetic diamonds are being grown, part of them getting but and polished, and is used in the jewellery industry. The absence of characteristic inclusions is one of the signs assuming that the diamond has an artificial origin.

Moreover, a huge number of diamond treatment techniques have been developed and are actively used: colour enhancement, inclusion elimination, and fracture filling.

Smolensk Kristall guarantees that all the polished diamonds it manufactures are neither synthetic, nor treated.

GIA Description
FL Without inclusions and outer flaws
IF Without inclusions
VVS2 Minute inclusions very hardly visible under 10X magnification
VVS1 Minute inclusions very hardly visible under 10X magnification
VS2 Light and dark inclusions comparatively easily visible under 10X magnification
VS1 Light and dark inclusions clearly visible under 10X magnification
SI1 Light and dark inclusions easily detectable under 10X magnification
SI2 Light and dark inclusions easily detectable under 10X magnification including those visible by unaided eye
I1 Inclusions visible by unaided eye, affecting a diamond's transparency, brilliance and resistance to damage
I2 Inclusions visible by unaided eye, affecting a diamond's transparency, brilliance and resistance to damage
I3 Inclusions visible by unaided eye, affecting a diamond's transparency, brilliance and resistance to damage
Rej. Inclusions badly affecting a diamond's transparency, brilliance and resistance to damage. A completely opaque diamond.
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