52 Pierres de collection - Wednesday 20 April 2022 - 19 h 00

6 picture(s) Appraisal : 3200/3500 €

Hammer price : 0 €
LOT N°021

Pear mixed cut zultanite (diaspore) of 10,12 ct.
Very large refraction index : 1722 - 1748

Read more 238);">Dimensions : 19,11 x 11,01 x 7,14 mm.
A veil crosses the stone but disappears depending on the angle of perception. Very deep color. Most of the zultanites are less saturated than this one.

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2 picture(s) Appraisal : 8000/9000 €

Hammer price : 0 €
LOT N°022

Sealed square radiant cut of 1,53 ct., color H, purity VVS2. Slight fluorescence. Nice glitter.
HRD Antwerp Report nr. 210000082096, 23 July 2021.

Read more sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">Dimensions : 6,58 x 6,35 x 4,39 mm.

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6 picture(s) Appraisal : 15000/18000 €

Hammer price : 18000 €
LOT N°023

Padparadscha sapphire of 1,59 ct. of a very rare vivid orangy pink color. Mixed cushion cut, this sapphire has no indication of heating. Very nice transparency. Madagascar origin following the indications of the CGL report.
Carat Gem Lab Report nr. CGL25197, November 2021.

Read more font-size: 14px; background-color: rgb(238, 238, 238);">Dimensions : 6,40 x 6,22 x 4,32 mm.
Munsell Book of Color :
Primary hue : 2.5R 3/10
Secondary Hue : 5R 5/14
Third hue : 6.25R 5/12

Expert notes:
In every auction, there is a remarkable stone. If there only had to be one, it would be this stone! A padparadscha of a color so vivid, so intense, so saturated; it is rare. In a gemologist’s lifetime, sapphires of this quality are less than the number of fingers on one hand. This padparadscha appears red, then a tender pink color adds itself to this primary red, to finally unveil an expression of bloody orange. Nature has decided. This color will be unique and well above all others. What a pleasure to be able to share this beautiful stone with Millon Belgique’s clients. It is very rare and it is really beautiful.

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11 picture(s) Appraisal : 260000/ 300000 €

Hammer price : 0 €
LOT N°024

Natural rond brillant cut diamond of 5,04 ct. with the exceptional D color, clarity VVS2. Excellent polish and symmetry. Table ration 57%. Medium faceted girdle. Medium blue fluorescence. Very nice flashes of color.
GIA Report nr. 5222148191, 16 December 2021.

Expert notes :
From D to Z, no less than 23 colors define diamonds known as

Read more colorless. From very white to yellow, going from grey to pinkish, diamonds are actually rarely colorless. And yet, when they are D colored, we consider them colorless. A lower color, E, and we would write ‘nearly white’ on the certificates. Here, a round cut diamond of impressionable size and ideal color. No need for more to be a part of this 50 precious stones’ collection!

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10 picture(s) Appraisal : 60000/70000 €

Hammer price : 0 €
LOT N°025

Beautiful vivid red pigeon blood ruby of 3,39 ct. from Mozambique as it is indicated on the GRS report. Rutile needles play with rainbow colors in a very delicate softness. Parallel ribbons cross the gemstone. Very well cut gemstone.
GRS Report nr. GRS2014-0412313 of 29 May 2014. This stone is so exceptional that the GRS Laboratory added an appendix to the orignal report and to mention that it is a GRS-type pigeon blood ruby (without strong fluorescence). No indication of thermal treatment.
Dimensions :

Read more 8,37 x 7,68 x 4,61 mm.
Munsell Book of Color :
Primary hue : 5R 2/8 et 6.25R 3/12
Secondary hue : 7.5R 2/12 et 2.5R 4/14

Expert notes :
The very thin needles of rutiles are in 3D. They occupy the stone throughout its depth and cover the space alongside the suspended tiny crystals. There is no need to look through the microscope, the magnifying glass x10 will place you at the forefront of the stone’s performance.

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11 picture(s) Appraisal : 40000/60000 €

Hammer price : 30000 €
LOT N°026

Superb modified cushion cut tanzanite of 49,23 ct. Thanks to its very nice cut, the stone sparkles with reddish raspberry flashes. The principal hue is intense royal blue with violet touches. Great transparency with strong pleochroism when the stone is moved laterally : intense blue on one side, violet blue on the other side.
Identification GIA Report nr. 2406948475, 20 October 2021.
Dimensions : 24,19 x 17,62 x 13,27 mm.
11 picture(s) Appraisal : 30000/35000 €

Hammer price : 0 €
LOT N°027

Intense purplish-pink sapphire of 5,77 ct. mixed oval brilliant cut. No indication of thermal treatment in this remarkable gemstone. The indicated Madagascar origin is obvious thanks to the homogeneous crystal clusters in suspension in this sapphire. Those inclusions reflect the light with fire.
GRS Report nr.

Read more GRS2016-129602, 13 December 2016.
Gem Report Antwerp Report nr. 1830006176 AN, 25 February 2022.
Munsell Book of Color :
Principal hue : 3,75RP 4/12 et 2,5RP 4/12
Limited but existing flashes : 2.5P 5/8 et 1.25Y 7/10

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5 picture(s) Appraisal : 10000/12000 €

Hammer price : 0 €
LOT N°028

White translucent opal of 21,10 ct. with an extraordinary snake skin pattern combining red, yellow, green and sometimes blue intense rolling flashes of fire. Thanks to its thickness (nearly 1 cm.), the flashes can roll along the snake skin pattern.
Dimensions : 24,01 x 16,87 x 9,59 mm.
8 picture(s) Appraisal : 4000/5000 €

Hammer price : 3600 €
LOT N°029

Lot of three pear shape morganites, well sorted by shape, size and color which is pinkish salmon. Nice shine. It is rare to get three calibrated stones in the same hue.
Dimensions pear 1 : 15,93 x 12,15 x 7,49 mm. Poids : 7,10 ct.
Dimensions pear 2 : 16,03 x 11,93 x 6,77 mm. Poids : 6,46 ct.
Dimensions pear 3 : 16,12 x 12,15 x 7,81 mm. Poids : 7,63 ct.
8 picture(s) Appraisal : 2800/3200 €

Hammer price : 2900 €
LOT N°030

Sensational mixed oval cut aquamarine of 11 ct., greenish blue color with a leopard pattern. ALGT laboratory defines this motive as the presence of orangey red dendritic limonite inclusions. An aventurescence phenomenon appears in specific directions. A micro-photography of the inclusions is visible on the ALGT website.

Read more 238);">Preliminary report ALGT nr. 88445412, 24 November 2021. Entire Report visible on the ALGT website.
Dimensions : 17,05 x 13,12 x 8,26 mm.

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10 picture(s) Appraisal : 3000/3500 €

Hammer price : 0 €
LOT N°031

Emerald cut tsavorite of 3,03 ct., very nice clarity, intense and bright green. Inclusions and healing cracks are present mostly in the corners of the gemstone.
Dimensions : 9,65 x 6,85 x 4,52 mm.

Notes of expert:
This type of green garnets comes primarily from the Tsavo parc in Kenya, hence its name. The tsavorite presented here can be mounted into a jewelry while respecting the presence of inclusions. The ideal set is

Read more in a 22 kt. bezel set to soften the metalwork near the stone. Enhanced alongside the very white diamonds, she will be of better impact.

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9 picture(s) Appraisal : 900/1200 €

Hammer price : 850 €
LOT N°032

Color change oval spinel of 3,07 ct. From purple blue to pinkish purple, the color change already reveals itself when we move the stone. A light veil crosses the gemstone. Mysterious color with glittering. Few graining.
ALGT Report nr. 61201533 of 28 April 2021.
Dimensions : 10.14 x 7.46 x 4.74 mm.

Expert notes:
Close to the table,

Read more we can identify small inclusions conveying a black color on an inclined surface. It may probably be small (non-tested) protogenetic zircons surrounded by halos. The gemologic vocabulary seems hermetic, yet the explanation is simple. A spinel has formed itself in a conducive environment while small zircons were already present for several hundreds of millions of years. Two very distant geological eras are reunited in this stone, offering the result of an atypical and sought-after spinel.

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5 picture(s) Appraisal : 2000/3000 €

Hammer price : 0 €
LOT N°033

Very rare cat's eye emerald cabochon of 6,72 ct. This phenomenon reveals the ability of the gems cutter to keep chatoyancy. The reflection of light is particularly well centered. Irregularities under the stone due to the mother rock.
Dimensions : 10,83 x 9,65 x 8,52 mm.
8 picture(s) Appraisal : 21000/25000 €

Hammer price : 0 €
LOT N°034

Intense blue oval cabochon star sapphire of 12,61 ct. Six branches asterism on a translucent blue. Brightness of the stone. Burma (Myanmar) origin and no indication of heating certified by two reports.
Dimensions : 13,74 x 11,80 x 7,40 mm.
C. Dunaigre Switzerland Report nr. CDC 1206126, 29 June 2012.
Gem Report Antwerp nr. 1830006174 AN, 2 March 2022.
Dimensions : 13,74 x 11,80 x 7,40 mm.

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " />
Expert notes:
Star sapphires are opaque in most cases. Here, simultaneously transparent and translucid, the sapphire plays with its very mobile star. Very nice quality.

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9 picture(s) Appraisal : 30000/35000 €

Hammer price : 0 €
LOT N°035

Fancy vivid yellow natural diamond of 1,63 ct., clarity VVS1, round modified brilliant cut. Even distribution of the color. Very good proportions. Fluorescence : medium blue.
GIA colored diamond report nr. 2165637874, 27 October 2014.
Dimensions : 6,89 - 6,91 x 4,53 mm.

Expert notes:
The cut, quite flat, is entirely astonishing

Read more because when we face the stone, we find ourselves confronted to a central pattern similar to a tunnel. We dive into the stone that is, in fact, not so deep. It is the paradox of this mysterious stone. The spring-like color gives the stone a great deal of light.

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12 picture(s) Appraisal : 45000/55000 €

Hammer price : 0 €
LOT N°036

Oval mixed cut blue sapphire of 10,17 ct. with no indications of heating. Nice transparency and deep blue for this sapphire where beautiful crystal inclusions are surrounded by subtle halos. The light plays in this gemstone and causes nice glittering flashes. A ceylon origin is suggested by the report.
Gem Report Antwerp nr. 1830006177 AN, 25 February 2022.
Dimensions : 13,37 x 10,35 x 8,57 mm.
Munsell Book of Color :

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " /> Primary hues : 5PB 2/6 et 5PB 2/8
Secondary hue : 6.25PB 4/12
Color flashes : 10B 6/8

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2 picture(s) Appraisal : 65000/75000 €

Hammer price : 0 €
LOT N°037

Sealed cushion cut diamond 3,02 ct. Exceptional D color and Loup Clean (LP). Excellent symmetry with intense shining. Laser inscription on the girdle.
HRD Antwerp Report nr. 170002846308 of 13 December 2018.

Read more style="font-family: Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">Dimensions : 9,21 x 7,28 x 5,15 mm.

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12 picture(s) Appraisal : 75000/85000 €

Hammer price : 0 €
LOT N°038

Natural Orangy-Pink sapphire of 11,05 ct. called padparadscha meaning 'Lotus flower' in Sri Lanka, its origin. No indication of thermal treatment on all the reports. Oval modified brillant step cut. Well cut pavilion showing all the colors in the beautiful and big sapphire. The padparadschas of more than 10 ct. are rare when they have this salmon touch of color. Three reports with this stone.

Read more Arial, sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">GRS report nr. GRS2018-059545, 3 May 2018.
Carat Gem Lab Report nr. CGL18642, January 2019.
Gem Report Antwerp nr. 1830006173 AN, 24 February 2022.
Dimensions : 12,91 x 11,62 x 8,89 mm.

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12 picture(s) Appraisal : 65000/85000 €

Hammer price : 36000 €
LOT N°039

Oval brilliant faceted tanzanite of 92,19 ct. The weight but also the saturation of colors and the pleochroism are remarkable. The Royal blue color is dark but there are two other colors in this stone. Violet comes and goes with intense, almost red, raspberry flashes. A light blue appears sometimes. Beautiful transparency. No indication of heating/treatment. Two reports from well-known labs.
Lotus Gold Report nr. 9705-4705, 11 October 2021.
GIA Report nr. 2407948371, 20 October 2021.

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " /> Dimensions : 29,58 x 24,74 x 16,91 mm.

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9 picture(s) Appraisal : 35000/40000 €

Hammer price : 0 €
LOT N°040

Fancy yellow diamond of 5,02 ct., clarity SI1. This diamond is astonishing because its variation oval cut gives flashes of light where they are not supposed to appear. Its purity could be upgraded with a small recut. The inclusions are close to the edge. Proportion on the report are purely indicative. Slight fluorescence.
HRD Report nr. 16011714001, 11 April 2016.
Dimensions : 11,38 x 9,08 x 5,83 mm.

Expert

Read more notes:
The cut plays on a surprising oval variation. It is in fact very astonishing because diamond cuts are usually very precise to allow a nice spread of light. Here, the girdle is thick, divided, the culet in four parts has improbable facets. In all honesty, a fancy cut diamond is refreshing. We are no longer tied by the conventions.

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