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

9 picture(s) Appraisal : 3000/4000 €

Hammer price : 5800 €
LOT N°001

Paraiba-type tourmaline of 1,79 ct. Intense blue square faceted cut. Gemstone with no indication of treatment, with a Brazilian geographical origin and following the analysis on the Laboratoire Français de Gemmologie report (LFG).
LFG Report on 21/02/2022 nr. 388872. Small piece missing from the girdle and one of the pavilion edges due to the internal structure of the stone and polishing process. Small knock on one of the corners.
Dimensions : 7,03 x 6,98 x 4,88 mm.
LFG Report on 21/02/2022 nr. 388872.

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " /> Dimensions : 7,03 x 6,98 x 4,88 mm.

Expert notes:
The paraiba is a recent find in the history of gemology. It was discovered in the middle of the 1980s in the Paraiba state of Brazil, hence the name. From the rarest blue seen in a stone until now, the deposit exhausts itself quite rapidly. The main production today is in Mozambique. Paraiba tourmalines of Brazil remain however the most sought-after stones. The one we are presenting to you today not only derives from this desired origin, but also from an intense saturated blue that is even more rare. This gem ticks all the boxes of a precious gemstones collection.

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7 picture(s) Appraisal : 600/1200 €

Hammer price : 800 €
LOT N°002

Square step cut red spinel of 1,37 ct. of possible Burmese origine. The deep red color appears sometimes orangey under artificial light. Very pure. A feather can be seen under one of the edges.
Dimensions : 6,39 x 6,39 x 3,82 mm.

Read more 238);">Expert notes :
Rarer than rubies, the red spinel is one of the most resistant stones in which the color is entirely natural. Confused for centuries with the ruby, the latter’s value on the gemstones’ market has not stopped increasing. Famous spinels include the ‘Côte-de-Bretagne’, once owned by Anne de Bretagne and conserved at the Louvre Museum, as well as the famous Black Prince’s Ruby, first mentioned in the middle of the 14th century, on the front of the Imperial State Crown of the United-Kingdom.

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3 picture(s) Appraisal : 800/1200 €

Hammer price : 1200 €
LOT N°003

Oval cut morganite of 14,59 ct. orangey pink with a beautiful transparence. Report of the Instituto Gemológico Español du 10/03/2021 nr. D-31309 (IGE).
Dimensions : 28,34 x 14,01 x 9,23 mm.
7 picture(s) Appraisal : 2000/2500 €

Hammer price : 0 €
LOT N°004

Deep green sugarloaf cabuchon cut verdelite tourmaline of 16,54 ct. with a nice transparency
Report of Gem Report Antwerp nr. 1830006179 AN, February 25, 2022.

Read more Arial, sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">Dimensions : 14,38 x 14,10 x 11,31 mm.

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9 picture(s) Appraisal : 11000/15000 €

Hammer price : 0 €
LOT N°005

Vivid Red ruby of 2,51 ct. oval brilliant/step cut. No indication of heat treatment, geographical origine of Mozambique, color "Pigeon's blood", according to the informations on the GRL report nr. GRL2019A02353 of 25 October 2019.
Dimensions : 9,72 x 6,66 x 3,98 mm.
10 picture(s) Appraisal : 17000/19000 €

Hammer price : 0 €
LOT N°006

Vivid violet sapphire of 4,28 ct. oval mixed cut. Gemstone with no indication of treatment. Very nice transparency. No geographical origin.
Identification report from Emteem Gem Laboratory (E G Lab, Sri Lanka) nr. 133290 of 25 February 2021.
Dimensions : 10,72 x 8,11 x 6,23 mm.

Expert notes :

Read more style="font-family: Roboto, " /> From a saturated violet, intense and bright, this sapphire has a shininess and a very expressive fire. Completely natural color, without any human interference, nature surpassed itself for such intensity. Simultaneously violet, purple, raspberry and mauve, the light plays with all these reflections in a balanced manner.

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10 picture(s) Appraisal : 18000/25000 €

Hammer price : 12000 €
LOT N°007

-- NO RESERVE PRICE --
Tanzanite of 32,81 ct. with a great transparency, elongated brillant pear shape, showing some very beautiful raspberry color flashes on a body color ranging from pronounced purple to royal blue. GIA certificate of June 8, 2021.
GIA identification report : 2396004242

Read more sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">Dimensions : 29.00 x 16.04 x 10.09 mm.

Expert notes:
By laying the gemstone on its table, the double color of the latter clearly shows itself. Between pinkish purple and violet blue, the play of colors becomes more complex as you turn and shift the stone in day and artificial light.

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8 picture(s) Appraisal : 45000/50000 €

Hammer price : 0 €
LOT N°008

Exceptional modified brilliant/step cushion cut sapphire of 10,56 ct., with the very rare Golden-Yellow color. Intense fire and glittering of the golden color throughout the entire stone. The GRS assigns an origin of Sri Lanka. Great transparency and color distribution. Natural sapphire with no indications of treatment.
GRS

Read more report nr. GRS2021-057569 of May 28, 2021.
Dimensions : 13,13 x 11,28 x 8,12 mm.
Munsell Book of Color :
Primary hue : 1.25Y 8/16 et 8.75YR 7/14
Secondary hue : 5YR 7/12 et 1.25YR 6/12

Expert notes:
The GRS laboratory of Switzerland estimated this stone’s quality so exceptional that it must be included in an additional appendix to the report. The latter mentions that a test of color stability has been completed. Its color, saturation and tint are of a remarkable stability. The color of this non-heated stone is therefore the result of nature occasionally exceeding the limits of perfection!

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8 picture(s) Appraisal : 35000/45000 €

Hammer price : 0 €
LOT N°009

Oval mixed shape intense blue sapphire of 12,35 ct. The stone has no indication of heating and has a Sri Lanka (Ceylon) origin as it mentioned in the Carat Gem Lab report. Presence of fire that gives life to this very beautiful sapphire.
Carat Gem Lab report nr. CGL09197 of June, 2015.

Read more font-size:="" helvetica="" style="font-family: Roboto, " /> Gem Report Antwerp report nr. 1830006172 AN of february 24, 2022.
Dimensions : 14,05 x 10,80 x 9,41 mm.

Expert notes :
The inclusions are superb: ‘Fingerprints’, veil of rutiles playing through the prism of light, very nice crystalline inclusions, this stone has everything and yet… it is transparent. This hidden world unveils itself mainly under the microscope.

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8 picture(s) Appraisal : 2500/3500 €

Hammer price : 2000 €
LOT N°010

Welo Ethiopian natural black opal in an oval cabochon shape of 10,56 ct. combining concentric and rolling intense flashes of fire. Following the light and orientation, flaming red, royal blue, electric green, gold flashes appear in lines, circles, patches that look like fish scales .
Fire saturation: vivid. Consistance

Read more of base color : excellent.
Dimensions : 24,26 x 12,39 x 6,96 mm.

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8 picture(s) Appraisal : 38000/42000 €

Hammer price : 0 €
LOT N°011

Exceptional natural padparadscha sapphire of 5,05 ct. with a pinkish-orange color rarely awarded as a 'Sunset' color. Cushion modified brilliant cut of the very high purity and salmon shining. Reports indicate that this padparadscha has no indication of thermal treatment.
GRS Report nr. GRS2018-062435, 27 June 2018.
Gem Report Antwerp nr. 1830006171 AN, 24 February 2022.
Dimensions : 9,32 x 8,94 x 6,01 mm.

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " /> Expert notes:
When a padparadscha sapphire is exceptional due to its color, the renowned laboratories do not hesitate to award it with an adjective. If this stone had more yellow and orange in it, it would have been called ‘Hawaiian sunset’. In this case, because the salmon color dominates the stone in a homogenous way, the term ‘Sunset’ is used to define this sapphire which is salmon, but not too much, powdery pink with a few splashes of candy pink. More than 5 carats for such a color, it is definitely a rare collection stone.

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9 picture(s) Appraisal : 135000/145000 €

Hammer price : 0 €
LOT N°012

Natural diamond of 4,03 ct. emerald cut, color E with the particularity of having a perfect clarity. We know IF (Internally Flawless) diamonds which means that they are pure inside. When we meet a clarity F diamond (Flawless), it means that the stone is perfect even if it's viewed under 10x magnification. This is the case for the diamond in this auction. No inclusions or blemishes, nothing. Faint fluorescence, excellent polish and symmetry.
GIA Report n° 5221260962,

Read more 4 February 2022.
Dimensions : 10,87 x 7,42 x 4,89 mm.

Expert notes:
This diamond is engraved on the girdle with the number of its GIA report, thus, wherever you are in the world, its characteristics can be found on the GIA website. This inscription also guaranties the exceptional purity of this diamond.

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12 picture(s) Appraisal : 88000/92000 €

Hammer price : 0 €
LOT N°013

Blue sapphire of 22,99 ct. with a nice clarity. Oval modified brilliant shape with indications of heating treatment. Two reports for this stone indicate an origin of Sri Lanka. Shining stone of a remarkable cut. Three different colors mixed together give this stone a beautiful saturation.
GRS Report nr. GRS2018-047526 du 8 mars 2021.
Gem Report Antwerp Report nr. 1830006169AN du 24 février 2022.
Dimensions : 18,09 x 14,57 x 10,48 mm.

Read more style="font-family: Roboto, " /> Munsell Book of Color :
Primary : 6.25PB 3/12
Secondary : 7.5PB 2/6
Third hue : 5PB 6/10

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11 picture(s) Appraisal : 36000/40000 €

Hammer price : 0 €
LOT N°014

Oval vivid pink sapphire of a nice color intensity of 4,61 ct. No indications of heating, this is one of the best colors that nature can produce. When you dive into the stone, the Madagascar origin is obvious and confirmed by the Carat Gem Lab report. Tiny crystal clusters inside the stone help to spread the light everywhere. Beautiful flashes with a slight touch of blue. It's beautiful. The intense color is rare and naturally shines.
Carat Gem Lab Report nr. CGL16936, May 2018.
Dimensions : 11,28 x 8,92 x 5,25 mm.

Read more style="font-family: Roboto, " /> Munsell Book of Color :
Primary : 10P 5/12 et 2.5RP 5/12
Secondary : 7.5P 4/12

Expert notes:
We often ask the same question to gemologists. Is a color this intense due to its cut? Yes and no. A very nice cut, well chosen, not to preserve a maximum of weight but to keep its nicest color, is of course important. All we have to do is look at a pink raw sapphire and another similar but well cut one, the difference is obvious. However, in the case of beautiful sapphires, the color is always intense. The cut will only reveal the inside beauty of the stone, which is begging to shine to its peak. It is the case here.

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10 picture(s) Appraisal : 45000/55000 €

Hammer price : 0 €
LOT N°015

Cushion modified brilliant cut diamond of 7,04 ct. Clarity VS2, U-V color following the GIA report. Stone with inside life, remarkable glow that gives a not so common impression of diving into the deep. Strong blue fluorescence.
GIA Report nr. 6217688788, 18 May 2021.
GemReport Antwerp nr. 1810017326AN, 25 February 2022 + nr. 1810016985AN, 20 January 2022.
Dimensions : 10,88 x 10,36 x 7,08 mm.

Read more background-color:="" font-size:="" helvetica="" style="font-family: Roboto, " /> Expert notes :
A diamond filled with life and beautiful fire! Although the GIA made the decision to classify this diamond U to V, the Millon expert notes a few restrictions regarding the color. By comparing it to the lot 40 of this auction, graded by HRD as a Fancy Yellow, we quickly realize that this diamond’s color is very similar. In other words, it would be worth your while to compare it from up-close with diamond number 40.

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13 picture(s) Appraisal : 80000/90000 €

Hammer price : 0 €
LOT N°016

Oval modified brilliant cut paraiba tourmaline of 20,54 ct. Luminous greenish blue color. Nice shine due to a beautiful cut. One of the best quality of this gemstone is its transparency. Non-specified origin.
GIA Report nr. 6392849377 daté, 10 August 2021.
Gem Report Antwerp nr. 1830006178 AN, 25 February 2022.
Dimensions : 19,67 x 14,64 x 10,61 mm.
Munsell Book of Color :

Read more font-size:="" helvetica="" style="font-family: Roboto, " /> Primary hue : 7.5BG 7/8 et 7.5BG 7/6
Secundary hue : 7.5BG 8/4

Expert notes:
How subtle is the play of color in this wonderful paraiba tourmaline! We are here in the same level of hues, classified on the same page 7.5 Blue-Green of the Munsell Book of Color… That means that the color wanders, according to the position of the stone, in-between the different grades of saturation and density, all the while remaining in a harmony of tone. It is rare!

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7 picture(s) Appraisal : 30000/40000 €

Hammer price : 0 €
LOT N°017

Remarkable Kashmir sapphire of 5,14 ct. most likely from the region of Batakundi. No indication of heating. Round modified brilliant cut. A light blue veil crosses this purplish pink sapphire. Transparency and glitter. A GIA report mentions the Kashmir origin and the source type : CMT Type II which means that Kashmir comes first in the classification.
Sapphire origin report GIA nr. 6145054558, 26 September 2012.
Dimensions : 9,90 x 9,47 x 6,73 mm.
Munsell Book of Color :

Read more font-size:="" helvetica="" style="font-family: Roboto, " /> Primary hue : 2.5RP 3/8 et 2.5RP 5/8
Veil of color : 7.5PB 4/8

Expert notes :
The color between pink and blue, the veil, the tender and milky element of the stone remind us of sapphires from the Batakundi area. The GIA certificate mentions that the source should be from the outskirts of Azad province, which corresponds perfectly to Batakundi. An excellent article from Vincent Pardieu et al. offers broad explanation and cards on these very beautiful Kashmir sapphires: https://www.gia.edu/doc/batakundi_sapphire.pdf

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8 picture(s) Appraisal : 2000/3000 €

Hammer price : 2000 €
LOT N°018

Deep green tsavorite garnet of 4,13 ct. High cushion mixed cut that captures light. Flashes of light also bounce on internal crystal clusters. Healing crevices through the stone. For those who love deep green tsavorites , we fluctuate here between darkness and light. Minor graining on the surface.
Dimensions : 9,43 x 8,31 x

Read more 6,45 mm.

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3 picture(s) Appraisal : 800/1200 €

Hammer price : 750 €
LOT N°019

Reversed watermelon color tourmaline slices, with the particularity of the pink inside and green outside. Nice pair. Graining.
Dimensions slice 1 : 15,18 x 12,33 x 1,88 mm.

Read more Neue", Helvetica, Arial, sans-serif; font-size: 14px; background-color: rgb(238, 238, 238);">Slice 2 : 15,11 x 12,43 x 2,20 mm.
Total weight: 7,99 ct.

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8 picture(s) Appraisal : 250/350 €

Hammer price : 400 €
LOT N°020

Concave trillion cut citrine of 16,62 ct. greenish light yellow color. The concave cut can be seen on the radiant pavilion and on the edge of the table, giving the outline a cut. Extremely bright stone thanks to this non-conventional cut that allows us to admire the art of the cutter. Some graining and a few scratches.

Read more 238);">Dimensions : 18,38 x 18,30 x 10,73 mm.

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