Brooch - 18 kt. Yellow gold, Platinum - 4.35ct. tw. Diamond (Natural) - Sapphire - Vintage 1960
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Current bid
€ 1,400
Reserve price not met
Expert
Selected by Laura Trevino
She has 15 years' auction experience, specialising in vintage jewellery from 1920 to 2000.
Estimate € 7,300 - € 8,800
 | €1,400 | |
|---|---|---|
| €1,300 | |
 | €1,200 | |
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Vintage diamond and sapphire brooch in 18K yellow gold and 950 platinum, weighing 23.2 g, set with 60 natural diamonds (total 4.35 ct) and six synthetic sapphires (2.00 ct), without a laboratory report, dating to around 1960 from Belgium.
AI-assisted summary
Description from the seller
Type of jewel: Vintage diamond and sapphire brooch in 18K gold and 950 platinum
Condition: very good
Country of origin: Belgium
Style: Vintage
Era: ca. 1960
Material: 18K yellow gold and platinum (touchstone tested)
This brooch was made by the former firm Boschmans in Antwerp. It appears to have been created as a commission for a specific client, as it combines older diamonds with modern brilliant cut diamonds. The quality of the workmanship is very good, as is the quality of the modern brilliant cut diamonds.
Diamond(s): Ten brilliant cut with an estimated weight of ± 1.10ct. (colour and clarity: F/H, vvs/vs).
Six old mine brilliant cut (also called bolshevics) with an estimated weight of ± 1.33ct. (colour and clarity: F/J, vvs/si).
Ten old mine brilliant cut (also called bolshevics) with an estimated weight of ± 1.20ct. (colour and clarity: H/J, vs/i).
34 single cut (also called English-cut, 8-cut or 8/8, a sort of simplified brilliant cut) with an estimated weight of ± 0.72ct. (colour and clarity: H/J, si/i).
Total diamond count: 60 pcs.
Total diamond weight: approx. 4.35 crt.
Precious stone(s): Six synthetic sapphires, also called Verneuil sapphires with an estimated weight of ± 2.00ct.
Birth and month stones: Diamond is the birthstone (or month stone) for April and Sapphire is the birthstone (or month stone) for September.
- When we provide weights, colour grades, and clarity of diamonds, these are approximate unless otherwise stated, as we do not remove diamonds from their settings to preserve the integrity of the piece.
- All diamonds, regardless of their size or shape, in our vintage and antique jewellery are verified as 100% natural by the IJGC laboratory.
- All gemstone weights are approximate, as the stones are not removed from their settings to preserve the integrity of the piece.
Hallmarks: "0750" suggesting 18K gold, "PT950" suggesting 950/1000 platinum and a master mark from which the outer shape is in the shape of a barrel and was taken offically in use in Belgium since 1952 (but was already used before that date).
Dimensions: width across the ring head 4,80 cm (1,89 inch) x 5,92 cm (2,33 inch)
- See picture with a ruler in cm and inches
Weight: 23,20 gram (14,92 dwt)
Adin reference Nº: 26182-0155
- All jewels are delivered in an Adin jewellery box. Boxes shown in photos are display props unless stated otherwise.
- Every piece is accompanied by an Adin certificate of authenticity for your piece of mind. Adin has specialised in antique and vintage jewellery in Antwerp for over four decades. We maintain professional memberships and affiliations that reflect our ongoing commitment to standards, research, and responsible trade practice.
- Shipped insured and registered. Collection in person is also welcome.
- For shipments outside the EU, import duties and other charges may apply. We advise checking this in advance.
- We invite you to browse through our customer feedback to discover the level of satisfaction we consistently provide.
- See more of our pieces: https://auction.catawiki.com/lotsfrom/Adin
- Antique and vintage jewellery may show evidence of past repairs or restoration, reflecting normal wear and period use. We present pieces in an authentic state and do not routinely remove surface marks or apply rhodium plating to white gold. If you prefer a brighter finish, you may choose a cosmetic refresh by a local goldsmith.
Seller's Story
Adin shares with their collection of vintage and antique jewellery over 4 decades of expertise. On our provider page, you get the experience of exploring our boutique, located in the world diamond center Antwerp. Elkan Wijnberg, Adin’s founder and CEO, is a member of the Belgian Chamber of Experts to the Courts of Justice and of both the British and American Society of Jewellery Historians.
Type of jewel: Vintage diamond and sapphire brooch in 18K gold and 950 platinum
Condition: very good
Country of origin: Belgium
Style: Vintage
Era: ca. 1960
Material: 18K yellow gold and platinum (touchstone tested)
This brooch was made by the former firm Boschmans in Antwerp. It appears to have been created as a commission for a specific client, as it combines older diamonds with modern brilliant cut diamonds. The quality of the workmanship is very good, as is the quality of the modern brilliant cut diamonds.
Diamond(s): Ten brilliant cut with an estimated weight of ± 1.10ct. (colour and clarity: F/H, vvs/vs).
Six old mine brilliant cut (also called bolshevics) with an estimated weight of ± 1.33ct. (colour and clarity: F/J, vvs/si).
Ten old mine brilliant cut (also called bolshevics) with an estimated weight of ± 1.20ct. (colour and clarity: H/J, vs/i).
34 single cut (also called English-cut, 8-cut or 8/8, a sort of simplified brilliant cut) with an estimated weight of ± 0.72ct. (colour and clarity: H/J, si/i).
Total diamond count: 60 pcs.
Total diamond weight: approx. 4.35 crt.
Precious stone(s): Six synthetic sapphires, also called Verneuil sapphires with an estimated weight of ± 2.00ct.
Birth and month stones: Diamond is the birthstone (or month stone) for April and Sapphire is the birthstone (or month stone) for September.
- When we provide weights, colour grades, and clarity of diamonds, these are approximate unless otherwise stated, as we do not remove diamonds from their settings to preserve the integrity of the piece.
- All diamonds, regardless of their size or shape, in our vintage and antique jewellery are verified as 100% natural by the IJGC laboratory.
- All gemstone weights are approximate, as the stones are not removed from their settings to preserve the integrity of the piece.
Hallmarks: "0750" suggesting 18K gold, "PT950" suggesting 950/1000 platinum and a master mark from which the outer shape is in the shape of a barrel and was taken offically in use in Belgium since 1952 (but was already used before that date).
Dimensions: width across the ring head 4,80 cm (1,89 inch) x 5,92 cm (2,33 inch)
- See picture with a ruler in cm and inches
Weight: 23,20 gram (14,92 dwt)
Adin reference Nº: 26182-0155
- All jewels are delivered in an Adin jewellery box. Boxes shown in photos are display props unless stated otherwise.
- Every piece is accompanied by an Adin certificate of authenticity for your piece of mind. Adin has specialised in antique and vintage jewellery in Antwerp for over four decades. We maintain professional memberships and affiliations that reflect our ongoing commitment to standards, research, and responsible trade practice.
- Shipped insured and registered. Collection in person is also welcome.
- For shipments outside the EU, import duties and other charges may apply. We advise checking this in advance.
- We invite you to browse through our customer feedback to discover the level of satisfaction we consistently provide.
- See more of our pieces: https://auction.catawiki.com/lotsfrom/Adin
- Antique and vintage jewellery may show evidence of past repairs or restoration, reflecting normal wear and period use. We present pieces in an authentic state and do not routinely remove surface marks or apply rhodium plating to white gold. If you prefer a brighter finish, you may choose a cosmetic refresh by a local goldsmith.
Seller's Story
Adin shares with their collection of vintage and antique jewellery over 4 decades of expertise. On our provider page, you get the experience of exploring our boutique, located in the world diamond center Antwerp. Elkan Wijnberg, Adin’s founder and CEO, is a member of the Belgian Chamber of Experts to the Courts of Justice and of both the British and American Society of Jewellery Historians.
Details
Total carat weight of all stones
4.35
No. of surrounding gemstones
6
Diamond type of main stone
Natural
Laboratory report
No laboratory report
Era
1900-2000
Metal
Platinum, Yellow gold
Number of diamonds main stone
60
Total carat weight of surrounding stones
2.00
Brand jewellery
No
Fineness
18 kt.
Main stone
Diamond
Total carat weight of main stone(s)
4.35
Surrounding stones
Sapphire
Total weight
23.2 g
Condition
Very good condition - slightly used with small signs of wear
Gender
Unisex
Title additional information
Vintage 1960
Disclaimer
Catawiki always aims to offer you the best possible buying experience. Our experts virtually review and select every object in line with our submission guidelines. While we strive to provide a detailed description and photographs of each jewellery object, discrepancies or inaccuracies may occur. It is your responsibility to review all of the information provided about an object, including the condition and description, before placing an order. Sellers are responsible for the information, pictures and description provided, including the quality, quantity and nature of the jewelry supplied. A small imperfection that cannot be seen in the photo but is included in the description is not a non-conformity. A Lab Report is not a guarantee, valuation or appraisal regarding the articles described therein. A Lab Report contains only the characteristics of an article described after it has been graded, tested, examined, and analyzed using the techniques and equipment used at the time of the examination from that specific Lab. The results of any other examination performed on the article may differ depending when, how, by whom and with which grading standard the article is examined. In addition, any changes and improvements in techniques and equipment that may have occurred which may enable the examiner to detect, among other things, the use of processes for altering the characteristics of an article which use was previously undetectable, does not automatically mean the object does not conform to its description.
Catawiki always aims to offer you the best possible buying experience. Our experts virtually review and select every object in line with our submission guidelines. While we strive to provide a detailed description and photographs of each jewellery object, discrepancies or inaccuracies may occur. It is your responsibility to review all of the information provided about an object, including the condition and description, before placing an order. Sellers are responsible for the information, pictures and description provided, including the quality, quantity and nature of the jewelry supplied. A small imperfection that cannot be seen in the photo but is included in the description is not a non-conformity. A Lab Report is not a guarantee, valuation or appraisal regarding the articles described therein. A Lab Report contains only the characteristics of an article described after it has been graded, tested, examined, and analyzed using the techniques and equipment used at the time of the examination from that specific Lab. The results of any other examination performed on the article may differ depending when, how, by whom and with which grading standard the article is examined. In addition, any changes and improvements in techniques and equipment that may have occurred which may enable the examiner to detect, among other things, the use of processes for altering the characteristics of an article which use was previously undetectable, does not automatically mean the object does not conform to its description.
