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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....

Silvery green blue Montana sapphire emerald shaped
Price:
$3,600.00
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1.86 Carat
Silvery Green Blue
Light Medium 40
Lightly Included

rare yellow giant grossular garnet
Price:
$15,000.00
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7.53 Carat
Golden Yellow
Medium Dark 70
Lightly Included

untreated sapphire jewelry
Price:
$1,250.00
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0.59 Carat
14k White Gold

Fancy Diamond Blue

neon green diamond like garnet
Price:
$1,400.00
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0.86 Carat
Electric Green
Medium 55
Free of Inclusions

Violet orange purple Ceylon spinel
Reg. Price:
$1,980.00
Sale Price:
$1,500.00
Save:
$480.00
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3.29 Carat
Violet Orange Purple
Medium Dark 65
Free of Inclusions

flamingo pink morganite in whiote gold with diamonds
Price:
$132,000.00
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From the David Jerome Collection:
Unheated 18.49ct Brazilian Morganite 
in 18k White Gold
with 0.30ct Diamonds
Deep Flamingo Pink

US sapphire no heat colorchange sapphire
Price:
$950.00
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0.54 Carat
Multicolor/Color Changer
Medium 50
Free of Inclusions

 

grass green green demantoid precision cut
Price:
$12,400.00
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2.02 Carat
Mint Green
Medium Dark 70
Lightly Included

untreated russian sphene titanite

0.78 Carat (sold)
Lime Yellow
Medium Dark 60
Free of Inclusions

US sapphire no heat blue sapphire
Price:
$950.00
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0.51 Carat
Cold Lake Blue-Green
Light Medium 40
Free of Inclusions

 

untreated spinel jewelry
Price:
$1,450.00
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0.89 Carat
14k Yellow Gold

Fancy Diamond Blue

US sapphire no heat mint green
Price:
$900.00
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0.60 Carat
Hint of Mint
Light 33
Free of Inclusions

 

bright yellow Ceylon sapphire no heat
Price:
$2,800.00
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1.60 Carat
Fancy Diamond Yellow
Light 25
Lightly Included

 

untreated sapphire jewelry
Price:
$1,490.00
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1.01 Carat
14k White & Yellow Gold

Cold Sky Blue

Yellow orange Oregon sunstone
Price:
$5,400.00
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4.97 Carat
Green in Peach & Copper
Medium 50
Lightly Included

Burmese Danburite 2.47 Carat better than diamond
Price:
$1,400.00
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2.47 Carat
Sunshine Yellow
Lightly Included

Lavender purple Ceylon sapphire

1.23 Carat (sold)
Bright Greenish Blue
Medium 50
Free of Inclusions

 

dark pine green tourmaline
Price:
$5,100.00
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9.94 Carat
Deep Pine Green
Medium Dark 80
Lightly Included

extra fine mint green tourmaline precision brilliant cut in germany
Price:
$3,600.00
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2.67 Carat
Finest Mint Green
Medium Dark 60
Free of Inclusions

bright pink Ceylon sapphire no heat
Price:
$1,950.00
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0.98 Carat
Baby Pink
Light 20
Free of Inclusions

 

sandawna beryl in diamond quality
Price:
$2,500.00
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4.82 Carat
Fancy Diamond Yellow
Light 33
Free of Inclusions

deep blue australian sapphire unheated fine cutting
Price:
$1,950.00
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0.95 Carat
Deep Marine Blue
Medium Dark 80
Free of Inclusions

 

small mint green tourmaline round brilliant cut in germany
Price:
$490.00
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0.48 Carat
Deep Mint Green
Medium Dark 70
Very Lightly Included

mozambique indicolite tourmaline dark green blue
Price:
$1,600.00
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2.13 Carat
Dark Greenish Blue
Medium Dark 85
Lightly Included

Purplish violet Ceylon spinel
Price:
$1,800.00
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1.91 Carat
Purplish Violet
Medium Dark 75
Lightly Included

mint to ivy green demantoid
Price:
$6,900.00
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1.83 Carat
Mint to Ivy Green
Medium Dark 60-75
Lightly Included

Cold steel blue Ceylon spinel
Price:
$2,400.00
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3.46 Carat
Cold Steel Blue
Medium Dark 70
Very Lightly Included

 

mozambique indicolite tourmaline
Price:
$1,400.00
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0.93 Carat
Deep Teal Blue
Medium Dark 80
Free of Inclusions

Multicolor green Mozambique tourmaline
Price:
$880.00
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1.29 Carat
Multi-Color-Green
Light 30-Medium 60
Free of Inclusions

square cushion lime green yellow beryl untreated
Price:
$9,900.00
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12.76 Carat
Golden Lemon
Medium Dark 60
Lightly Included

 

South African Rhodolite Garnet

3.72 Carat (sold)
Rusty Metallic Green
Medium Dark 60
Very Lightly Included

Bright sky blue Burmese sapphire
Price:
$9,800.00
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2.05 Carat
Bright Sky Blue
Light 30 to Medium 60
Free of Inclusions

 

mozambique indicolite tourmaline
Price:
$2,100.00
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1.27 Carat
Rich Green Blue
Medium Dark 75
Free of Inclusions

Multi blue Ceylon sapphire
Price:
$19,600.00
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4.09 Carat
Multi-Blue
Medium Dark 70-80
Very Lightly Included

 

Neo lime green Ceylon sphene
Price:
$950.00
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1.07 Carat
Neon Lime Green
Medium Dark 60
Lightly Included

Cold cornflower blue Tanzanian sapphire
Price:
$9,700.00
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2.08 Carat
Cold Cornflower Blue
Medium Dark 75
Very Lightly Included

 

Sparkly cornflower blue Ceylon sapphire
Price:
$14,500.00
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2.06 Carat
Sparkly Cornflower Blue
Medium Dark 70
Lightly Included

 

Lime yellow green Ceylon sphen
Price:
$825.00
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1.19 Carat
Lime Yellow Green
Medium Dark 60
Lightly Included

Color changer sapphire

4.23 Carat (sold)
Color Changer
Medium Dark 70
Lightly Included

 

Storm blue Ceylon spinel

1.97 Carat (sold)
Storm Blue
Medium Dark 60
Free of Inclusions

Deep marine blue Montana sapphire
Price:
$14,200.00
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3.16 Carat
Deep Marine Blue
Medium Dark 70
Lightly Included

 

South African Rhodolite Garnet
Price:
$5,200.00
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1.48 Carat
Metalic Green
Medium Dark 60
Lightly Included

pair round brilliant demantoids non russian
Price:
$4,200.00
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2.01 Carat (pair)
Fresh Grass Green
Medium Dark 65
Lightly Included

Deep green blue shield Mozambique indicolite
Price:
$1,250.00
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1.06 Carat
Deep Green Blue
Medium Dark 60-80
Free of Inclusions

certified Neon blue aquamarine 12 carat

12.38 Carat (sold)
Neon Pool Green Blue
Medium 50
Very Lightly Included

Tanzanian colour change Garnet
Price:
$3,600.00
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4.28 Carat
Metallic Pink
Medium Dark 60
Free of Inclusions

green beryl pear shaped

3.69 Carat (sold)
Seafoam Blue-Green
Light Medium 40
Free of Inclusions

precision cut untreated aquamarine
Price:
$7,900.00
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10.61 Carat (pair)
Shiny Pool Greenish Blue
Medium 50
Free of Inclusions

Greenish Blue Aquamarine
Price:
$12,900.00
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9.65 Carat
Intense Greenish Blue
Medium 50
Very Lightly Included

Deep green blue rectangular Mozambique indicolite
Price:
$2,750.00
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2.04 Carat
Deep Green Blue
Medium Dark 75
Free of Inclusions

Neon grass green Mozambique paraiba tourmaline
Price:
$56,000.00
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7.22 Carat
Neon Grass Green
Medium Dark 60
Lightly Included

Deep red orange Spessartite garnet
Price:
$1,290.00
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2.95 Carat
Deep Red Orange
Medium Dark 75
Lightly Included

Mint green mozambique tourmaline precision cut
Price:
$900.00
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1.27 Carat
Deep Mint Green
Medium Dark 75
Lightly Included

fine high dispersion green demantoid in best cutting certiofie
Price:
$4,900.00
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1.73 Carat
Jungle Green
Medium Dark 60
Lightly Included

Deep orange pink Mahenge spinel
Price:
$19,500.00
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7.26 Carat
Deep Orange Pink 
Medium Dark 65
Lightly Included

Ultramarine green blue African indicolite tourmaline
Reg. Price:
$2,900.00
Sale Price:
$2,100.00
Save:
$800.00
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2.31 Carat
Ultramarine Green Blue
Medium Dark 85
Lightly Included

Fancy blue Colorado topaz
Price:
$6,500.00
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6.99 Carat
Fancy Blue
Light 25
Free of Inclusions

Round 2 carat demantoid
Price:
$12,000.00
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2.09 Carat
Bright Mint Green
Medium Dark 60
Lightly Included

Bright yellow green Oregon sunstone
Price:
$4,500.00
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3.32 Carat
Bright Yellow Green
Medium 50
Free of Inclusions

Fancy blue Colorado Topaz
Price:
$6,900.00
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6.76 Carat
Fancy Blue
Light 25
Very Lightly Included

Honey colored sapphire
Price:
$1,950.00
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1.26 Carat
Multi-colour
Medium Dark 60
Free of Inclusions

Tinted white Colorado Topaz
Price:
$999.00
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1.64 Carat
Tinted White
Free of Inclusions

Pure white Ceylon sapphire
Price:
$750.00
product
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0.31 Carat
Pure White
Free of Inclusions

Hint of peach Australian Topaz
Price:
$3,800.00
product
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3.94 Carat
Hint of Peach
Light 10
Very Lightly Included

Sparkly multicolored Oregon
Price:
$9,500.00
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5.30 Carat
Multi-Multi Colour
Medium Dark 70
Free of Inclusions

Bright reddish orange Oregon sunstone

2.14 Carat (sold)
Bright Reddish Orange
Medium Dark 60
Free of Inclusions

Violet purple pair of African sapphire

0.41 Carat (pair) (sold)
Violetish Purple
Medium Dark 60
Lightly Included

Fancy blue Colorado Topaz

5.00 Carat (sold)
Fancy Blue
Light 15
Free of Inclusions

Colorado Topaz

6.55 Carat (pair) (sold)
Fancy Blue
Light 30
Free / Lightly Included

Poppy red Oregon sunstone
Price:
$3,600.00
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2.66 Carat
Poppy Red
Medium Dark 60
Free of Inclusions

Multicolor Oregon sunstone
Price:
$18,600.00
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11.85 Carat
Multi-Multi Colour
Medium Dark 60
Free of Inclusions

South African Rhodolite Garnet precision cut in dark red
Price:
$6,840.00
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19.94 Carat (hold*)
Deep Red-Red
Medium Dark 80
Lightly Included

Brazilian Aquamarine in fine cutting and no treatments
Price:
$950.00
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1.49 Carat
Sparkly Bluish Green
Medium 50
Lightly Included

African Aquamarine in untreated form
Price:
$975.00
product
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0.99 Carat
Bright Pool Green-Blue
Light Medium 40
Free of Inclusions

Fogy sky blue Montana sapphire
Reg. Price:
$19,000.00
Sale Price:
$14,000.00
Save:
$5,000.00
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5.07 Carat
Hazy Sky Blue
Medium 50
Lightly Included

Deep poppy red Oregon sunstone
Price:
$12,200.00
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6.96 Carat
Deep Poppy Red
Medium Dark 75
Very Lightly Included

Fresh mint green Afghani tourmaline
Price:
$4,900.00
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3.38 Carat
Fresh Mint Green
Medium Dark 60
Lightly Included

Un-oiled Brazilian Emerald with highest clarity double certified GIA and IGI
Price:
$44,000.00
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2.10 Carat
Electric Bluish Green
Medium Dark 60
Very Lightly Included

Cold yellow Oregon sunstone
Price:
$12,900.00
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9.60 Carat
Cold Yellow
Medium 50
Free of Inclusions

cross over beryl to emerald
Price:
$12,500.00
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5.00 Carat (hold*)
Pastel Green-Blue
Light Medium 40
Lightly Included

precision cut untreated Brazilian Emerald
Price:
$28,000.00
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3.03 Carat
Bright Electric Green
Medium 55
Moderately Included

Sunset orange Mozambique tourmaline
Price:
$590.00
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0.79 Carat
Sunset Orange
Medium 50
Free of Inclusions

White to pink Mozambique tourmaline
Reg. Price:
$580.00
Sale Price:
$450.00
Save:
$130.00
product
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0.71 Carat
White to Pink
0 to Light 30
Free of Inclusions

diamond like white beryl
Price:
$6,900.00
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12.52 Carat (hold*)
Aqua White
Lightly Included

Red orange Oregon sunstone
Price:
$8,700.00
product
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5.23 Carat
Red-Orange
Medium Dark 70
Copper Sheen

 


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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CONTACT
 

Genuine testimonials since 2003
 

Call us TOLL-FREE from the US and Canada:
1-800-540-340-3
 
International customers please call:
1-302-883-8514
 

In case of technical problems,
please
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If we are out of the office, please leave a voice message and we will contact you.
 

The 3*NOS of Quality:
NO Treatments.
NO Inclusions.
NO Windows.
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