© 2019 Gemtrade AG - Switzerland
Phone +41 41 632 63 63 | info@gemtrade.ch
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We sell old mine cut diamonds diamonds from 0.30 ct with GIA reports high quality coloured gemstones natural pearls high quality jewellery from various periods and jewellery houses untreated sapphires untreated rubies untreated emeralds spinels alexandrites other rare coloured gemstones All of the coloured gemstones come with gemological reports from established international laboratories, such as SSEF, Gübelin Gem Lab and GRS.
Before the development of the brilliant cut by Marcel Tolkowsky around 1919, most diamonds were cut in the so-called old mine cut style. With the technology available at the time and for optimal use of material, most raw diamonds were cut close to an octahedron, the original eight-sided double pyramid form of the crystal. The resulting shape was in the form of a pillow with the top being much higher and the round side much thicker when compared to the composition of the brilliant cut. The culet was not crown-like, but instead a more or less large facet parallel to the pavilion. Old mine cut gemstones are less brilliant and appear a little darker than the modern brilliant, however the diamond’s strong surface shine is shown more to its advantage.
Old Mine Cut
Old Euro Cut
What are old cut diamonds
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EN
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Phone +41 41 632 63 63 | info@gemtrade.ch
Impressum & Disclaimer © 2019 Gemtrade AG - Switzerland
We sell old mine cut diamonds diamonds from 0.30 ct with GIA reports high quality coloured gemstones natural pearls high quality jewellery from various periods and jewellery houses untreated sapphires untreated rubies untreated emeralds spinels alexandrites other rare coloured gemstones All of the coloured gemstones come with gemological reports from established international laboratories, such as SSEF, Gübelin Gem Lab and GRS.
Before the development of the brilliant cut by Marcel Tolkowsky around 1919, most diamonds were cut in the so-called old mine cut style. With the technology available at the time and for optimal use of material, most raw diamonds were cut close to an octahedron, the original eight-sided double pyramid form of the crystal. The resulting shape was in the form of a pillow with the top being much higher and the round side much thicker when compared to the composition of the brilliant cut. The culet was not crown-like, but instead a more or less large facet parallel to the pavilion. Old mine cut gemstones are less brilliant and appear a little darker than the modern brilliant, however the diamond’s strong surface shine is shown more to its advantage.
Old Mine Cut
Old Euro Cut
What are old cut diamonds
DE
EN
|