Exceptional Gemstones - Autumn Auctions 2025
These outstanding Gemstones will be part of the autumn auctions 2025
An 18k white gold 11,51 ct Kashmir Sapphire (NTE) and diamond ring. Accompanied by a Gübelin Gemmological Report and an Evaluation Certificate by the German Association for Gemstone Evaluation in Idar-Oberstein. Estimate € 800,000 – 1,000,000
An 18k yellow and white gold approx. 22.60 ct Columbian emerald and diamond pendant. Accompanied by a Gemstone report from German Gem Lab (DSEF) and an evaluation certificate by the German Association for Gemstone Evaluation in Idar-Oberstein. Estimate € 300,000 – 400,000
An 18k white gold 16,27 ct diamond ring. Accompanied by an HRD Natural Diamond Grading Report. Estimate € 200,000 – 300,000
Contact
Jan Bykowski
Press and Public Relations
info@lempertz.com
Tel. 0221 925729 -57
Auction Dates
Auction
COLOGNE
Thursday 20 November 2025
2 p.m. | Lot 1 – 299
Please note that the lots 84J, 86J and 87J will be auctioned in the sale “50 Lots – My Choice | Jubilee Auction Henrik Hanstein” on 4th December 2025, 6 pm.
Thursday 20 November 2025
2 p.m. | Lot 1 – 299
Please note that the lots 84J, 86J and 87J will be auctioned in the sale “50 Lots – My Choice | Jubilee Auction Henrik Hanstein” on 4th December 2025, 6 pm.
Preview
COLOGNE
Saturday, November 15
Vernissage 10 a.m. – 4 p.m.
Sunday, November 16 | 11 a.m. – 4 p.m.
Monday, November 17 | 10 a.m. – 5.30 p.m.
Tuesday, November 18 | 10 a.m. – 5.30 p.m.
Wednesday, November 19 | 10 a.m. – 5.30 p.m.
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BRUSSELS (A selection)
Tuesday, October 28
Vernissage 5 – 9 p.m.
Wednesday, October 29 | 11 a.m. – 5 p.m.
Thursday, October 30 | 11 a.m. – 5 p.m.
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Munich (A selection)
Monday, November 10 | 10 a.m. – 5 p.m.
Tuesday, November 11 | 10 a.m. – 5 p.m.
Saturday, November 15
Vernissage 10 a.m. – 4 p.m.
Sunday, November 16 | 11 a.m. – 4 p.m.
Monday, November 17 | 10 a.m. – 5.30 p.m.
Tuesday, November 18 | 10 a.m. – 5.30 p.m.
Wednesday, November 19 | 10 a.m. – 5.30 p.m.
______________________________________________________
BRUSSELS (A selection)
Tuesday, October 28
Vernissage 5 – 9 p.m.
Wednesday, October 29 | 11 a.m. – 5 p.m.
Thursday, October 30 | 11 a.m. – 5 p.m.
_____________________________________________________
Munich (A selection)
Monday, November 10 | 10 a.m. – 5 p.m.
Tuesday, November 11 | 10 a.m. – 5 p.m.
Catalogue
