ID 959530
Lot 223 | KÖCHERT STAR SAPPHIRE AND DIAMOND BROOCH
Estimate value
CHF 260 000 – 450 000
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.
| Medium: | Diamonds, Gold, Precious stones, Sapphire |
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| Auction house category: | Brooches and pins |
| Medium: | Diamonds, Gold, Precious stones, Sapphire |
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| Auction house category: | Brooches and pins |
| Address of auction |
CHRISTIE'S Place de la Taconnerie 8 1204 Geneva Switzerland | ||||||||||||||
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| Preview |
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| Phone | +41(0)22 319 1766 | ||||||||||||||
| Phone | +41(0)22 319 1767 | ||||||||||||||
| Conditions of purchase | Conditions of purchase | ||||||||||||||
| Shipping |
Postal service Courier service pickup by yourself | ||||||||||||||
| Payment methods |
Wire Transfer | ||||||||||||||
| Business hours | Business hours
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