Catégories

Precious stones

465 résultats

online Jusqu’au 15 novembre | 14:40

Green sapphire, 2.55 carats. Unheated. Provenance: Tanzania. With AIG certificate.

Mise à prix

60 €

online Jusqu’au 15 novembre | 14:42

Sapphire, 5.5 carats, treated. Provenance: Madagascar. With certificate.

Enchère en cours 30 €

online Jusqu’au 15 novembre | 14:43

Sapphire, 2.48 carats. Natural. Provenance: Sri Lanka. With AIG certificate.

Mise à prix

20 €

online Jusqu’au 15 novembre | 14:45

Ruby, 43.49 carats. Treated. (Signs of wear, scratches). Comes with a certificate.

Mise à prix

10 €

live 15 novembre | 17:00

Lot of 27 loose diamonds, brilliant cut, weighing approximately 3-3.5 points each. Total weight: 0.88 carat.

Estimation

130 - 180 €

online Jusqu’au 15 novembre | 20:02

Oval-cut, 5-carat lab-grown diamond; this synthetic diamond has exactly the same physical, chemical, and visual properties as a natural diamond. A gemologist would be unable to distinguish it from a natural diamond with the naked eye or under a magnifying glass. The warranty certificate is an integral part of the description. We can ship your orders for the following flat rates: €40 (France), €50 (Europe)

Mise à prix

1 450 €

online Jusqu’au 15 novembre | 20:03

DIAMOND: Round, lab-grown, 6.02 carats. This synthetic diamond has exactly the same physical, chemical, and visual properties as a natural diamond. A gemologist would be unable to distinguish it from a natural diamond with the naked eye or under a loupe. The guarantee certificate is an integral part of the description. We can ship your orders for the following flat rates: €40 (France), €50 (Europe)

Mise à prix

1 800 €

online Jusqu’au 15 novembre | 20:03

7.55-carat emerald-cut lab-grown diamond; this synthetic diamond has exactly the same physical, chemical, and visual properties as a natural diamond. A gemologist would be unable to distinguish it from a natural diamond with the naked eye or under a loupe. The warranty certificate is an integral part of the description. We can ship your orders for the following flat rates: €40 (France), €50 (Europe)

Mise à prix

2 200 €

online Jusqu’au 15 novembre | 20:04

8.88-carat pear-shaped lab-grown diamond; this synthetic diamond has exactly the same physical, chemical, and visual properties as a natural diamond. A gemologist would be unable to distinguish it from a natural diamond with the naked eye or under a loupe. The warranty certificate is an integral part of the description. We can ship your orders for the following flat rates: €40 (France), €50 (Europe)

Mise à prix

2 700 €

online Jusqu’au 15 novembre | 20:04

MARQUISE-CUT DIAMOND, 10-carat lab-grown; this synthetic diamond has exactly the same physical, chemical, and visual properties as a natural diamond. A gemologist would be unable to distinguish it from a natural diamond with the naked eye or under a loupe. The guarantee certificate is an integral part of the description. We can ship your orders for the following flat rates: €40 (France), €50 (Europe)

Mise à prix

2 900 €

live 17 novembre | 13:30

Round brilliant-cut diamond on paper, N/R, VS1.

Estimation

8 000 - 10 000 €

live 17 novembre | 14:00

Round

Estimation

900 - 1 000 €

Frais 0%

live 16 novembre | 19:00

SANT'AGOSTINO AUCTION HOUSE

Mise à prix

100 €

live 19 novembre | 14:15

Round brilliant-cut diamond on paper weighing 2.07 ct.

Estimation

6 000 - 8 000 €

17 novembre | 11:00

An unmounted treated green pear-cut diamond, measuring approximately 10.5 x 6.4 x 2.9mm, weight 1.32ct (VAT charged on hammer price)

Mise à prix

660 €

17 novembre | 11:00

An unmounted treated green pear-cut diamond, measuring approximately 10.2 x 6.2 x 2.6mm, weight 1.14ct (VAT charged on hammer price)

Mise à prix

660 €

17 novembre | 11:00

An unmounted treated yellow-green marquise-cut diamond, measuring approximately 10.7 x 5.6 x 3.0mm, weight 1.21ct (VAT charged on hammer price)

Mise à prix

720 €

17 novembre | 11:00

Two unmounted treated black brilliant-cut diamonds, measuring approximately 7.6-7.7 x 4.5mm, weight 1.74ct; and 7.7 x 4.9mm, weight 1.95ct (2) (VAT charged on hammer price)

Mise à prix

504 €

17 novembre | 11:00

An unmounted treated yellow brilliant-cut diamond, measuring approximately 7.9 x 4.6mm, weight 1.78ct (VAT charged on hammer price)

Mise à prix

839 €

17 novembre | 11:00

An unmounted treated bluish green princess-cut diamond, measuring approximately 6.3 x 6.2 x 4.4mm, weight 1.52ct (VAT charged on hammer price)

Mise à prix

660 €

17 novembre | 11:00

An unmounted treated green radiant-cut diamond,measuring approximately 9.1 x 6.9 x 5.8mm, weight 3.46ct(VAT charged on hammer price)

Mise à prix

1 199 €

live 20 novembre | 13:30

Two octagonal step-cut EMERALDS, one weighing 1.54 carats and the other 0.70 carats.

Estimation

400 - 500 €

live 20 novembre | 14:00

Set of 3 stones on paper:

Estimation

300 - 500 €

live 18 novembre | 14:30

LOOSE FANCY DIAMOND

Estimation

28 000 - 40 000 €

live 18 novembre | 14:30

LOOSE DIAMOND BRIOLETTE

Estimation

7 000 - 11 000 €

live 18 novembre | 14:30

LOOSE DIAMOND

Estimation

25 000 - 30 000 €

live 18 novembre | 18:00

THREE (TREATED) OVAL-CUT RUBYs WITH A TOTAL WEIGHT OF 3.94 CT

Estimation

80 €

live 18 novembre | 18:00

THREE (TREATED) RUBYs IN OVAL AND PEAR CUTS WITH A TOTAL WEIGHT OF 7.60 CT AND THREE BLACK SPINELS IN ROUND CUTS WITH A TOTAL WEIGHT OF 0.54 CT

Estimation

180 €

live 18 novembre | 18:00

SQUARE-CUT EMERALD WEIGHING 4.04 CT

Estimation

90 €

live 18 novembre | 18:00

OVAL CABOCHON BLACK STAR SAPPHIRE WEIGHING 27.50 CT

Estimation

100 €

live 18 novembre | 18:00

MÊLÉE DIAMONDS OF VARIOUS CUTS, SIZES, AND QUALITIES. TOTAL WEIGHT: 15.24 CT

Estimation

900 €

live 18 novembre | 18:00

RECTANGULAR-CUT EMERALD WEIGHING 2.73 CT

Estimation

100 €

live 18 novembre | 18:00

LOT OF SIX RUBY STONES (TREATED) — FOUR OVAL-CUT AND TWO PEAR-CUT, WITH A TOTAL WEIGHT OF 16.90 CT

Estimation

280 €

live 18 novembre | 18:00

MÊLÉE DIAMONDS OF VARIOUS CUTS, SIZES, AND QUALITIES. TOTAL WEIGHT: 20 CT

Estimation

1 500 €

live 18 novembre | 18:00

THREE OVAL-CUT EMERALDS WITH A TOTAL WEIGHT OF 1.56 CT

Estimation

100 €

live 18 novembre | 18:00

1.16 CT OVAL-CUT FANCY ORANGE SAPPHIRE

Estimation

120 €

live 18 novembre | 18:00

HEART-SHAPED SAPPHIRE WEIGHING 1.70 CT

Estimation

100 €

live 18 novembre | 18:00

OVAL-CUT EMERALD WEIGHING 0.86 CT

Estimation

80 €

live 19 novembre | 10:00

3 small brilliant-cut diamonds: 1 x 0.122 ct, color: TW, clarity: IF, cut: very good; 1 x 0.111 ct, TW, IF, cut: very good; 1 x 0.11 ct, TW, IF, cut: very good. Each comes with a certificate.

Estimation

50 - 100 €

live 19 novembre | 11:00

Rectangular, beveled, sealed diamond weighing 1.45 carats, with a natural grayish-greenish-yellow color.

Estimation

2 000 - 3 000 €

live 19 novembre | 11:00

Sealed pear-shaped diamond weighing 1 carat, light brownish-yellow in color.

Estimation

1 500 - 2 000 €

live 19 novembre | 11:00

Oval faceted sapphire mounted on paper, weighing 2.74 carats, with a vivid blue color.

Estimation

3 200 - 5 000 €

live 19 novembre | 11:00

Oval-cut faceted sapphire mounted on paper, weighing 2.59 carats, with a vivid blue color.

Estimation

3 000 - 5 000 €

live 19 novembre | 11:00

Oval faceted sapphire mounted on paper, weighing 2.40 carats, with a vivid blue color.

Estimation

2 800 - 4 000 €

live 19 novembre | 11:00

Oval-round faceted sapphire on paper weighing 5.61 carats, greenish-blue in color.

Estimation

2 000 - 2 500 €

live 19 novembre | 11:00

Oval faceted sapphire on paper, weighing 9.51 carats, blue in color.

Estimation

4 500 - 5 000 €

live 19 novembre | 11:00

Oval faceted sapphire on paper, weighing 5.19 carats, blue in color.

Estimation

2 500 - 3 000 €

live 19 novembre | 11:00

Heart-shaped diamond on paper weighing 1.03 carats, color H, clarity IF.

Estimation

2 500 - 4 000 €

live 19 novembre | 11:00

Set of brilliant-cut and antique-cut diamonds on paper, weighing approximately 1.80 carats in total.

Estimation

500 - 800 €

live 19 novembre | 14:00

A sealed brilliant-cut diamond weighing 1 carat, accompanied by its IGI laboratory report No. 825678855, certifying a color of I, clarity of I2, and no fluorescence.

Estimation

300 - 500 €

live 19 novembre | 14:00

A brilliant-cut diamond on paper weighing 0.70 carats, accompanied by its IGI laboratory report No. 797679030, certifying a color of H, clarity of VVS1, and no fluorescence.

Estimation

300 - 400 €

live 20 novembre | 10:00

1.03 ct diamond

Estimation

1 000 - 1 500 €

live 20 novembre | 10:00

0.99 ct diamond

Estimation

800 - 1 200 €

live 20 novembre | 10:00

Five brilliant-cut diamonds, total 0.99 ct

Estimation

500 - 750 €

live 20 novembre | 10:00

Ten brilliant-cut diamonds, total 0.97 ct

Estimation

390 - 585 €

live 20 novembre | 10:00

Ten brilliant-cut diamonds, total 1.0 ct

Estimation

390 - 585 €

live 20 novembre | 10:00

Eleven brilliant-cut diamonds, total 0.98 ct

Estimation

390 - 585 €

live 20 novembre | 10:00

Four brilliant-cut diamonds, total 1.24 ct

Estimation

450 - 675 €

live 20 novembre | 10:00

Four brilliant-cut diamonds, total weight 1.52 ct

Estimation

480 - 720 €

live 20 novembre | 10:00

Faceted sapphire, 10.3 ct

Estimation

1 300 - 1 950 €

live 20 novembre | 10:00

Gemstone Collection

Estimation

120 - 180 €

live 20 novembre | 10:30

Synthetic spinel doublet set.

Estimation

500 - 600 €

live 20 novembre | 10:30

Set of rhodochrosites.

Estimation

350 - 400 €

live 20 novembre | 10:30

Set of rubies.

Estimation

10 000 - 11 000 €

live 20 novembre | 10:30

Set of emeralds.

Estimation

2 200 - 2 400 €

live 20 novembre | 10:30

Set of sapphires.

Estimation

7 400 - 7 600 €

live 20 novembre | 10:30

Malachite set.

Estimation

500 - 600 €

live 20 novembre | 11:00

Loose emerald, approx. 9 ct, emerald cut

Estimation

1 200 - 1 600 €

live 20 novembre | 14:00

DIAMOND on paper, 1.06 carats, F color, VS2 clarity

Estimation

2 000 - 4 000 €

live 20 novembre | 14:00

DIAMOND on paper 1ct01, color F, clarity VVS1

Estimation

2 000 - 4 000 €

live 20 novembre | 14:00

DIAMOND on paper, 1ct09, F color and IF clarity

Estimation

2 000 - 4 000 €

live 20 novembre | 14:00

2.57 ct ruby on paper

Estimation

500 - 1 000 €

live 21 novembre | 10:00

74 natural brilliant-cut diamonds, total weight approx. 2.01 ct, various shades of yellow and brown, SI1-I1, various shades of brown, in a blister pack, certificate included

Mise à prix

300 €

live 21 novembre | 10:00

7 natural brilliant-cut diamonds, total weight 1.07 ct, clarity grade G, grayish to yellowish-gray, I1, in blister packaging, gemmological report available

Mise à prix

300 €

live 21 novembre | 10:00

Approx. 540 small natural brilliant-cut diamonds, total weight approx. 4.01 ct (diameter approx. 0.1–0.12 cm), fancy light yellow–fancy yellow, SI–I, in blister packaging, certificate included

Mise à prix

300 €

live 21 novembre | 10:00

A total of 15 natural brilliant-cut diamonds, total weight approx. 1.53 ct, F-LGW, SI2-I1, in a blister pack, certificate included

Mise à prix

300 €

21 novembre | 13:00

DIAMOND, brilliant cut, 2,05 ct, approx. LY/VS1, measurements 8,35 x 8,23 x4,85 mm

Estimation

3 100 €

21 novembre | 13:00

DIAMOND, antique cut, 1,04 ct, approx. Ca(N)/P, measurements 6,14 x 5,51 x 4,37 mm, notch i anslutning for inclusion that reach the surface

Estimation

450 €

online Jusqu’au 22 novembre | 14:07

1.01 ct diamond on paper, brilliant cut, "H" color, and free of visible inclusions (Loupe-Clean). In a sealed envelope (sealed by the Paris Chamber of Commerce and Industry). Certificate from the HRD Laboratory, No. 006215, issued to the purchaser on January 18, 1978.

Mise à prix

1 800 €

live 23 novembre | 14:00

Cushion-cut DIAMOND on paper, weighing 0.98 carats, estimated color J-K, estimated clarity SI.

Estimation

300 - 500 €

live 23 novembre | 14:00

Oval-cut sapphire, likely from Ceylon, blue in color, weighing 11.11 ct, measuring 13.13 x 9.46 x 8.66 mm. Accompanied by LGL certificate No. 806, dated July 2, 2026.

Estimation

6 000 - 8 000 €

live 23 novembre | 14:00

Cushion-cut DIAMOND on paper with a GIA certificate dated February 2025, weighing 0.66 carats, color G, clarity VS1, no fluorescence.

Estimation

700 - 1 200 €

live 23 novembre | 14:00

DIAMOND on paper, weighing 0.52 ct, color H, clarity VS2, certified by the International Gemological Institute.

Estimation

280 - 400 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.25 carats, color E, clarity VVS2, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.286 carats, color E, clarity VVS2, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.281 carats, color F, clarity VVS1, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.281 carats, color E, clarity VVS1, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.294 carats, color E, clarity VVS2, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

BRILLIANT-CUT DIAMOND weighing 0.28 carats, color F, clarity VVS1, accompanied by its sealed IGI certificate.

Estimation

200 - 300 €

live 23 novembre | 14:00

DIAMOND set in heart-shaped paper, weighing 1.53 ct, measuring 6.48 x 6.94 x 4.07 mm, greenish-grayish-yellow in color, no fluorescence, SI2 clarity. Comes with an IGI certificate.

Estimation

300 - 500 €

live 23 novembre | 14:00

DIAMOND on paper, weighing 0.5 ct, measuring 4.95 x 4.98 x 3.19 mm, color M, clarity VVS1, no fluorescence. Comes with a GIA certificate.

Estimation

200 - 400 €

live 23 novembre | 14:00

Green SAPPHIRE, cushion cut, weighing 9.31 ct, measuring 12.62 x 11.26 x 6.5 mm, color: Deep green. Comes with an IGI certificate.

Estimation

100 - 300 €

live 23 novembre | 14:00

Green cushion-cut SAPPHIRE, weighing 3.959 carats, 10.01 x 8.03 x 5.02, deep blueish-green color. Comes with a Bellerophon certificate.

Estimation

80 - 150 €

live 23 novembre | 14:00

Oval-cut SAPPHIRE, 4.535 carats, 10.79 x 8.59 x 5.09 mm, deep greenish blue. Comes with a Bellerophon certificate

Estimation

80 - 150 €

live 23 novembre | 14:00

Green cushion-cut SAPPHIRE, weighing 5.051 carats, 9.04 x 8.61 x 6.79 mm, deep blueish-green in color. Comes with a Bellerophon certificate

Estimation

80 - 150 €

live 23 novembre | 14:00

Green SAPPHIRE, oval cut, weighing 1.81 carats, measuring 9.47 x 7.31 x 3.4 mm, yellowish-green in color, with an ALGT certificate.

Estimation

60 - 100 €

live 23 novembre | 14:30

1.01 ct loose diamond with settings, 18k white gold, 1.01 ct brilliant-cut diamond, E color, IF clarity, accompanied by a ring and necklace with bezel settings.

Estimation

3 500 - 7 000 €

live 23 novembre | 14:30

Zambian emerald weighing 8.92 ct, 8.92 ct loose oval Zambian emerald.

Estimation

7 000 - 14 000 €

live 23 novembre | 14:30

Lot of two loose Zambian emeralds, both oval-cut, 6.39 ct and 4.73 ct.

Estimation

5 500 - 11 000 €

live 23 novembre | 14:30

Loose diamond weighing 6.59 ct, round brilliant-cut diamond, G color, VVS2 clarity.

Estimation

100 000 - 200 000 €

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