KÖCHERT STAR SAPPHIRE AND DIAMOND BROOCH

Lot 223
12.05.2023 14:00UTC +01:00
Classic
Sold
CHF 226 800
AuctioneerCHRISTIE'S
Event locationSwitzerland, Geneva
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ID 959530
Lot 223 | KÖCHERT STAR SAPPHIRE AND DIAMOND BROOCH
Estimate value
CHF 260 000 – 450 000
KÖCHERT STAR SAPPHIRE AND DIAMOND BROOCH

Cabochon star sapphire, oval brilliant-cut diamonds of 4.01 and 3.50 carats, pear brilliant-cut diamonds of 3.76, 3.03, 2.21 and 1.75 carats, round brilliant-cut diamonds of 1.14, 1.14, 1.13 and 1.12 carats, 18k yellow gold, maker's mark (Köchert)



Gübelin, 2023, report no. 23030194: star sapphire, Sri Lanka (Ceylon), no indications of heating, with Information Sheet on Unheated sapphires

10 GIA reports, 2016-2023: 4.01 to 1.12 carats, D colour, Flawless to VVS2 clarity, excellent polish and symmetry. Three diamonds Type IIa and one Type Ia



Size/Dimensions: 4.0 cm

Gross weight: 27.2 grams





Provenance

New York, 17 October 2018, lot 9

Original brooch by J.E. Caldwell & Co., mounted with old European-cut diamonds

Redesigned by Köchert in 2021



Special notice


This lot is subject to standard Swiss VAT rules and 7.7% VAT will be charged on the ‘hammer’ and the ‘buyer’s premium’



Post lot text

Please note that some of these reports are over five years old and may require updates.
Address of auction CHRISTIE'S
Place de la Taconnerie 8
1204 Geneva
Switzerland
Preview
12.05.2023
Phone +41(0)22 319 1766
Phone +41(0)22 319 1767
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