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Untreated Precision-Cut Gemstones (better it does not get...)

Razor-Sharp Master-Cuts! From the best cutters of Europe, Asia and the USA. Nothing less but perfect! 

What is a precision cut and why are they more expensive? Read on below....

Deep orange pink Malaya garnet
Price:
$750.00
product
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1.32 Carat
Deep Orange Pink
Medium Dark 70
Lightly Included

Yellow orange Oregon sunstone
Price:
$4,600.00
product
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3.47 Carat
Yellow-Orange
Medium Dark 60
Copper Sheen

Yellow orange green Oregon sunstone
Price:
$21,100.00
product
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10.49 Carat
Yellow-Orange-Green
Medium Dark 70
Free of Inclusions

Sparkly sea-foam green Mozambique tourmaline
Price:
$8,400.00
product
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4.12 Carat
Sparkly Sea-Foam Green
Medium 50
Free of Inclusions

Deep mint green Afghani tourmaline
Price:
$1,720.00
product
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1.86 Carat
Deep Mint Green
Medium Dark 75
Free of Inclusions

merelani green garnet precsion cut in germany
Price:
$950.00
product
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0.43 Carat
Intense Bright Green
Medium Dark 60
Free of Inclusions

White Ceylon topaz
Price:
$875.00
product
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2.34 Carat
White White
Free of Inclusions

Deep marine blue

2.22 Carat (sold)
Cold Marine Blue
Medium Dark 60
Lightly Included

Aqua white pair of Ceylon topaz
Price:
$400.00
product
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0.41 Carat (pair)
Aqua White
Very Lightly Included

Fresh green grass Kenyan tourmaline
Price:
$400.00
product
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0.47 Carat
Fresh Grass Green
Medium Dark 60
Free of Inclusions

Deep blue green Afghani tourmaline
Price:
$1,590.00
product
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1.72 Carat
Deep Blue Green
Medium Dark 75
Free of Inclusions

Tanzanian Ruby
Price:
$2,240.00
product
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4.93 Carat
Cinnamon
Medium Dark 70
Free of Inclusions

Sunshine yellow Ceylon sapphire
Price:
$1,975.00
product
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1.13 Carat
Sunshine Yellow
Medium 40
Lightly Included

Yellow orange Oregon sunstone copper bearing GIA certified
Price:
$18,900.00
product
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9.48 Carat
Yellow-Orange
Medium 50
Free of Inclusions

Mauve Ceylon spinel
Price:
$2,600.00
product
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2.24 Carat
Fine Mauve
Medium Dark 60
Very Lightly Included

Deep jungle green Afghani tourmaline
Price:
$1,660.00
product
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2.05 Carat
Deepest Jungle Green
Medium Dark 80
Free of Inclusions

Deep marine blue Ceylon sapphire
Price:
$12,100.00
product
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3.51 Carat
Deep Marine Blue
Medium Dark 65
Lightly Included

Deep steel blue Ceylon spinel
Price:
$1,580.00
product
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3.07 Carat
Cold Steel Blue
Medium Dark 60
Lightly Included

Neon blue green Afghani tourmaline
Price:
$1,180.00
product
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0.64 Carat
Neon Blue Green
Medium Dark 65
Free of Inclusions

Dense blue green Afghani tourmaline
Price:
$1,450.00
product
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1.23 Carat
Dense Blue Green
Medium Dark 75
Free of Inclusions

Mint green emerald Afghani tourmaline
Price:
$1,950.00
product
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2.60 Carat
Fine Mint Green
Medium Dark 75
Free of Inclusions

Deep mauve Ceylon spinel

1.32 Carat (sold)
Deep Mauve
Medium Dark 70
Lightly Included

Shiny sky blue Ceylon sapphire
Price:
$7,800.00
product
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2.19 Carat
Shiny Sky Blue
Medium 55
Free of Inclusions

Mint green pair of Afghani tourmaline
Price:
$2,800.00
product
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2.71 Carat (pair)
Finest Mint Green
Medium Dark 70
Free of Inclusions

Pure white Ceylon topaz
Price:
$425.00
product
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1.08 Carat
Pure White
Free of Inclusions

Tanzanian Ruby

1.53 Carat (sold)
Intense Silky Pink
Medium Dark 60
Lightly Included

Price:
$18,900.00
add product
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5.17 Carat
Indian Summer 
Medium Dark 75
Free of Inclusions

 

pear shapes helidor without treatments
Price:
$2,400.00
product
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3.36 Carat
Shiny Golden Yellow
Medium Dark 60
Free of Inclusions

Golden caramel Ceylon Tourmaline
Price:
$2,800.00
product
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3.90 Carat
Golden Caramel
Medium Dark 65
Free of Inclusions

Rich mulberry purple Ceylon sapphire
Price:
$6,400.00
add product
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3.03 Carat
Rich Mulberry Purple
Medium Dark 75
Very Lightly Included

Mild pinkish orange Badakshan Padparadscha spinel
Price:
$1,550.00
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1.30 Carat
Mild Pinkish Orange
Medium Dark 60
Free of Inclusions

 

Mint green cushion Afghani tourmaline
Price:
$1,590.00
product
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2.30 Carat (hold)
Fine Mint Green
Medium Dark 75
Free of Inclusions

Tanzanian Ruby

0.85 Carat (pair) (sold)
Blazing Green
Medium Dark 70
Free of Inclusions

Neon blue green paraiba round Mozambique tourmaline

0.83 Carat (sold)
Neon Blue-Green
Medium Dark 60
Lightly Included

fine 100% color change alexandrite facetted
Price:
$9,500.00
product
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0.66 Carat
Colour Changer
Medium Dark 75
Lightly Included

Bright fancy yellow Ceylon sapphire
Price:
$1,500.00
product
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0.92 Carat
Bright Fancy Yellow
Light Medium 40
Free of Inclusions

pair aquamarine untreated
Price:
$11,500.00
product
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12.01 Carat (pair)
Bright Pool Green-Blue
Light 40
Free of Inclusions

Neon green Mozambique Paraíba tourmaline

1.28 Carat (sold)
Neon Green
Medium Dark 60
Lightly Included

round perfect cut chrysoberyl
Price:
$800.00
product
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0.86 Carat
Shiny Yellow
Medium 55
Free of Inclusions

brilliant cut white beryl like a diamond
Price:
$1,550.00
product
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1.79 Carat
Pure White
Very Lightly Included

biggest precision cut hessonite on the web
Price:
$8,250.00
product
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17.88 Carat
Rich Red Orange
Medium Dark 75
Free of Inclusions

Icy green blue Montana sapphire
Price:
$3,200.00
product
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1.48 Carat
Icy Green-Blue
Medium 55
Lightly Included

Metallic blue green Montana sapphire
Price:
$8,600.00
product
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3.04 Carat
Metallic Blue-Green
Medium 55
Lightly Included

Silky sky blue Ceylon sapphire
Reg. Price:
$15,500.00
Sale Price:
$9,990.00
Save:
$5,510.00
product
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7.43 Carat
Silky Sky Blue
Medium Dark 60
Lightly Included

Carmine red Ceylon spinel

1.47 Carat (sold)
Carmine Red
Medium Dark 75
Free of Inclusions

Intense iceberg green blue Montana sapphire
Price:
$9,250.00
product
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2.94 Carat
Intense Iceberg Green-Blue
Medium Dark 60
Lightly Included

Pastel purple pink Ceylon sapphire
Price:
$6,600.00
product
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2.05 Carat
Pastel Purple-Pink
Medium Dark 70
Free of Inclusions

ice blue Ceylon cobalt spinel precision cut
Price:
$15,900.00
product
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2.88 Carat
Ice Blue
Light 20
Lightly Included

Ember orange red Burma spinel
Price:
$12,500.00
product
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2.63 Carat
Ember Orange-Red
Medium Dark 75
Free of Inclusions

Fine mint green Ceylon tourmaline
Price:
$2,660.00
product
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2.65 Carat
Fine Mint Green
Medium Dark 75
Free of Inclusions

Dense violet blue African spinel
Price:
$1,750.00
add product
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1.11 Carat
Dense Violet Blue
Medium Dark 60
Lightly Included

Pastel pink Ceylon spinel
Price:
$1,100.00
product
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1.09 Carat
Pastel Pink
Medium Dark 60
Lighty Included

pair rich green chrysoberyls
Price:
$2,900.00
add product
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3.57 Carat (pair)
Intense Yellow Green
Medium Dark 65
Free / Lightly Included

 

precision cut bright mint tsavorite garnet
Price:
$7,500.00
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2.49 Carat
Bright Mint Green
Medium Dark 55
Very Lightly Included

 

legendary quality hessonite sold to japan unprecedented

10.64 Carat (sold)
Yellowish Honey Orange
Medium Dark 60
Free of Inclusions

Rich purplish red Ceylon spinel
Price:
$9,850.00
add product
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3.68 Carat
Rich Purplish Red
Medium Dark 75
Free of Inclusions 

 

Bright violet Montana sapphire
Price:
$1,500.00
add product
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0.81 Carat
Bright Violet
Light 20
Lightly Included

Afghan Kunzite near 10 carat
Price:
$3,660.00
product
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9.32 Carat
'Blazing' Baby Pink
Light 30
Free of Inclusions

White Ceylon topaz
Price:
$1,250.00
product
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4.57 Carat
White White
Free of Inclusions

Intense pinkish purple Madagascar sapphire
Price:
$1,450.00
product
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0.58 Carat
Intense Pinkish Purple
Medium Dark 60
Lightly Included

Deep purple violet Ceylon sapphire
Reg. Price:
$5,440.00
Sale Price:
$3,900.00
Save:
$1,540.00
product
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2.54 Carat
Deep Purple Violet
Medium Dark 80
Very Lightly Included

Rose red pink Ceylon spinel
Price:
$4,300.00
product
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1.98 Carat
Rose Red Pink
Medium Dark 75
Free of Inclusions

the only precision cut natural unheated ruby over two carat
Price:
$66,000.00
product
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2.19 Carat
Richest Rose Red
Medium Dark 75
Lightly Included

White Ceylon topaz untreated and precision cut in Germany
Price:
$2,840.00
add product
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32.31 Carat
White White
Free of Inclusions​

Mild orange pink Padparadscha spinel
Price:
$18,200.00
product
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4.57 Carat
Mild Orange Pink
Medium 55
Lightly Included

Multi color changer Ceylon sapphire
Price:
$12,750.00
product
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4.61 Carat
Multi-Color-Changer
Medium Dark 75
Lighty Included

Deep rain forest green Ceylon tourmaline
Price:
$4,500.00
product
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4.87 Carat
Deep Rainforest Green
Medium Dark 75
Free of Inclusions

 


What are precision cuts?

All gems in this section have been facetted according the highest standards of modern gemstone cutting.

What does this mean? Ever since the first human picked up a colored crystal to adorn his hairy self or his equally hairy companion, gemstones have been shaped to look prettier, incur magic or simply fit on a string.

Perhaps beginning in Idar-Oberstein, some 500 years ago, this shaping of natural gems became an official craft. Formal rules and standards were developed, and exported worldwide.

The industrial revolution produced the tools used in today’s lapidaries from Sri Lanka to Brazil. 

Formally incorrect, this old-world craft is often called ‘hand-cutting’ but we should better refer to ‘traditional cutting’ since precision cuts are also done by hand. The quality of traditional cutting depends on the individual performance of a craftsman/women. It can be anywhere from terribly shoddy to literally brilliant.

Over the last decade, a new dimension of perfection has been reached. The computer and its software, connected to precision cutting tools, have ‘liberated’ cutters from second guessing, gut-feeling and gut-decisions.

The results are spectacular. Facets end where they are supposed to end (that is exactly where the next facet begins), culets are pinpoint centered, girdles and tables are symmetric, height of crowns and pavilions, and their relation to each other, are a result of meticulous planning, nothing is left to chance.

Each new cut is based on the always unique rough and the specific demands that each gem variety presents to the cutter with individual reflective indexes, color distributions, and all the optical miracles that nature has blessed us with.

This is not to say that precision cuts are lifeless machine-based products. Designing a cut is still a creative act of art. Precision cutters have their own styles and characters, even if they use CAD and 3D software. Some are better than others. Each is unique.

Precision cuts need 25-50% more rough, and, as you can imagine from the qualified process, demand higher prices even than the finest traditional cutting.

Another term is ‘machine cut’, meaning that a gem is facetted in an automated process without any human input other than to program the machine doing the job. Obviously, the end-result of such a process could be very precise and flawless but will depend on the programming and quality of the machine doing the job. To my knowledge, machine-cuts are limited to cheaper rough, mostly synthetic or abundant small material.

Finally, I must explain the word ‘calibrated’. This term describes gems that are cut into given standard sizes so as to fit into mass-produced settings or so called ‘findings’. One would assume that ‘machine cut’ and ‘calibrated’ are the same, but this must not be, since a human cutter may well produce calibrated gems, though it sounds like little fun.

No doubt, the higher the value of the rough the less likely will we find calibrated and/or machine cut gems in the market.

Given the multidimensional, and often opposing, set of factors that every serious gem-design process entails, it is apparent that only human creativity and intuition can guarantee each unique and ultra-valuable ruby crystal a chance to become the most attractive gemstone possible. I hope we never get to the point of leaving this process to a machine, or do we? I don’t know.

Read about how to judge a precision cut on photo.


P.S. Excursion on fine traditional hand cutting: One needs a lens to distinguish a fine handcut from a perfect precision cut. The latter comes with exactly meeting edges, tightly ordered facets, 100% accurate angles, etc etc. all with zero human error, less with any ugly gem faux-pas. A perfect traditional handcut, like this one here, does also NOT commit any visible ugly offenses, no crude asymmetries, no fish-eye windows, no off-center culets or bad polishing etc. but under the lens you catch these little human defects that reveal the cutter's lack of design software and precision hard-ware. An experienced cutter with traditional quality tools and (most importantly) fine rough material can give a gem almost as much beauty as a precision cutter but the final detail is beyond his reach.

Does it matter, you may ask? Yes, if you love perfection and want only the best regardless of the cost. No, if you don't want to pay the precision-cut-premium, won't use the lens anyways, and 'only' want the prettiest gem for your money.

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