No reserve price - Engagement ring - 18 kt. White gold - 1.00ct. tw. Diamond (Natural) - Very rare diamond






Certified diamond grader by HRD with around 10 years' jewellery experience.
€550 | ||
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€500 | ||
€481 | ||
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This 18-carat white-gold solitaire ring features one natural 1.00-carat Old European-cut diamond, graded K colour and I1 clarity, with IGI report 10J2167226.
Description from the seller
No reserve price,
18 kt white gold solitaire ring with 1.00 ct Old European natural diamond
A jewel with timeless charm, enhanced by a 1.00-carat investment-grade natural diamond with a refined Old European Cut, a historic cutting style that gives the stone distinctive character and old-world elegance.
The diamond is the undisputed star of this creation: set in a refined 18 kt white gold setting, it is showcased by a claw setting that highlights its presence and allows light to pass through the stone.
The ring’s clean lines let the diamond’s personality shine through, making this solitaire an appealing choice for those who love classic jewelry, the charm of historic cuts, and pieces with a strong identity.
Jewelry details
* Type: solitaire ring
* Metal: 18 kt white gold
* Hallmark: 750
* Total weight: 3.52 g
* Center stone: 1 natural diamond
* Cut: Old European Cut
* Estimated carat weight: 1.00 ct
* Diamond dimensions: 6.70 × 6.80 × 3.40 mm
* Color: K
* Clarity: I1
IGI gemological certification
The jewelry is accompanied by the gemological report from the International Gemological Institute:
* Report number: 10J2167226
* Date: July 7, 2026
* Institute: IGI – International Gemological Institute
The certificate identifies a natural diamond with an Old European cut, an estimated weight of 1.00 carat, K color, and I1 clarity.
Packaging and shipping
* IGI certificate included.
* Jewelry box included.
* Fast, insured shipping.
* Tracking number provided to follow the delivery.
A solitaire with authentic personality
The beauty of this ring lies in the character of its Old European diamond: a cut with a classic feel, distinct from the proportions of modern brilliant cuts, and appreciated by those seeking stones with a unique aesthetic history.
Seller's Story
No reserve price,
18 kt white gold solitaire ring with 1.00 ct Old European natural diamond
A jewel with timeless charm, enhanced by a 1.00-carat investment-grade natural diamond with a refined Old European Cut, a historic cutting style that gives the stone distinctive character and old-world elegance.
The diamond is the undisputed star of this creation: set in a refined 18 kt white gold setting, it is showcased by a claw setting that highlights its presence and allows light to pass through the stone.
The ring’s clean lines let the diamond’s personality shine through, making this solitaire an appealing choice for those who love classic jewelry, the charm of historic cuts, and pieces with a strong identity.
Jewelry details
* Type: solitaire ring
* Metal: 18 kt white gold
* Hallmark: 750
* Total weight: 3.52 g
* Center stone: 1 natural diamond
* Cut: Old European Cut
* Estimated carat weight: 1.00 ct
* Diamond dimensions: 6.70 × 6.80 × 3.40 mm
* Color: K
* Clarity: I1
IGI gemological certification
The jewelry is accompanied by the gemological report from the International Gemological Institute:
* Report number: 10J2167226
* Date: July 7, 2026
* Institute: IGI – International Gemological Institute
The certificate identifies a natural diamond with an Old European cut, an estimated weight of 1.00 carat, K color, and I1 clarity.
Packaging and shipping
* IGI certificate included.
* Jewelry box included.
* Fast, insured shipping.
* Tracking number provided to follow the delivery.
A solitaire with authentic personality
The beauty of this ring lies in the character of its Old European diamond: a cut with a classic feel, distinct from the proportions of modern brilliant cuts, and appreciated by those seeking stones with a unique aesthetic history.
Seller's Story
Details
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.
