An elegant and distinctive 10-karat yellow gold pendant featuring a beautifully polished oval Bull's Eye Agate gemstone, accented by an antique-style rose mine-cut diamond set prominently at its centre. This sophisticated piece combines the dramatic natural beauty of black banded agate with the understated brilliance of an unusual diamond cut, creating a timeless and striking jewellery design.
This attractive pendant showcases a rich, dark Bull's Eye Agate, carefully shaped into an oval and mounted within a highly polished 10K yellow gold bezel setting. The gemstone displays the characteristic concentric banding associated with this variety of agate, creating an eye-catching natural pattern that draws attention toward the pendant's central diamond.
At the heart of the agate rests an approximately 0.17-carat rose mine-cut diamond, securely mounted in a contrasting yellow gold bezel setting. The diamond's irregular antique-style faceting gives it a distinctive character quite different from that of modern brilliant-cut diamonds, lending the pendant a romantic, old-world aesthetic.
The contrast between the dark, glossy agate, the warm yellow gold, and the softly reflective diamond produces an especially appealing composition. Its understated yet distinctive design makes it suitable for both everyday wear and more formal occasions.
The pendant has been wax cast, hand assembled, and finished, with attention given to its clean oval proportions and polished presentation.
The principal gemstone is a polished natural Bull's Eye Agate, a variety of banded chalcedony belonging to the quartz family.
Bull's Eye Agate is particularly admired for its distinctive concentric formations, which resemble a stylized eye or target. These naturally occurring bands give each gemstone its own individual character.
The dark background of this particular example provides a striking contrast against the central diamond and yellow gold mounting.
Agate Specifications:
Gemstone: Bull's Eye Agate
Shape: Oval
Measurements: Approximately 15.00 × 10.60 × 4.10 mm
Colour: Predominantly dark, with contrasting concentric banding
Finish: High Polish
Setting: 10K Yellow Gold Bezel
Back: Open-back construction
Positioned at the centre of the agate is a single diamond featuring an attractive, characterful rose mine cut.
Rose-cut diamonds are associated with early diamond-cutting traditions and are admired for their distinctive faceting and softer light reflection. Unlike modern brilliant cuts, these stones emphasize charm and individuality over uniformity.
The diamond has been set within its own polished yellow gold bezel, securely integrated into the centre of the agate gemstone.
Diamond Details:
Quantity: 1 Diamond
Cut: Rose Mine Cut
Estimated Carat Weight: 0.17 Carat
Measurements: Approximately 5.40 × 4.96 × 1.43 mm
Colour Grade: I–J
Clarity Grade: I1
Polish: Poor
Symmetry: Poor
Proportions: Poor
Setting: 10K Yellow Gold Bezel
The diamond's non-standard proportions and irregular characteristics are consistent with the individual appearance often encountered in older cutting styles.
Metal: Solid 10K Yellow Gold
Gold Purity: 10 Karat / 417
Hallmark: Stamped "10K" on the bail
Principal Gemstone: Bull's Eye Agate
Agate Dimensions: Approximately 15.00 × 10.60 × 4.10 mm
Diamond: One Rose Mine-Cut Diamond
Diamond Weight: Approximately 0.17 Carat
Setting: Oval Gold Bezel with Central Diamond Bezel
Construction: Wax Cast, Hand Assembled and Finished
Finish: High Polish
Bail: Solid Tapered Yellow Gold Bail
Total Pendant Weight: 2.11 Grams
Chain: Not included; pendant only
This pendant is accompanied by a professional jewellery insurance appraisal dated September 3, 2026, prepared by Estela Pelegrin, F.C.Gm.A., Fellow of the Canadian Gemmological Association and Jewellery Appraiser for the Canadian Antiques Road Show.
The appraisal documents the pendant's gold purity, gemstone measurements, diamond characteristics, total weight, and construction.
Appraised Fair Retail Value: $1,500.00 CAD, plus applicable taxes.
An elegant and distinctive 10-karat yellow gold pendant featuring a beautifully polished oval Bull's Eye Agate gemstone, accented by an antique-style rose mine-cut diamond set prominently at its centre. This sophisticated piece combines the dramatic natural beauty of black banded agate with the understated brilliance of an unusual diamond cut, creating a timeless and striking jewellery design.
This attractive pendant showcases a rich, dark Bull's Eye Agate, carefully shaped into an oval and mounted within a highly polished 10K yellow gold bezel setting. The gemstone displays the characteristic concentric banding associated with this variety of agate, creating an eye-catching natural pattern that draws attention toward the pendant's central diamond.
At the heart of the agate rests an approximately 0.17-carat rose mine-cut diamond, securely mounted in a contrasting yellow gold bezel setting. The diamond's irregular antique-style faceting gives it a distinctive character quite different from that of modern brilliant-cut diamonds, lending the pendant a romantic, old-world aesthetic.
The contrast between the dark, glossy agate, the warm yellow gold, and the softly reflective diamond produces an especially appealing composition. Its understated yet distinctive design makes it suitable for both everyday wear and more formal occasions.
The pendant has been wax cast, hand assembled, and finished, with attention given to its clean oval proportions and polished presentation.
The principal gemstone is a polished natural Bull's Eye Agate, a variety of banded chalcedony belonging to the quartz family.
Bull's Eye Agate is particularly admired for its distinctive concentric formations, which resemble a stylized eye or target. These naturally occurring bands give each gemstone its own individual character.
The dark background of this particular example provides a striking contrast against the central diamond and yellow gold mounting.
Agate Specifications:
Gemstone: Bull's Eye Agate
Shape: Oval
Measurements: Approximately 15.00 × 10.60 × 4.10 mm
Colour: Predominantly dark, with contrasting concentric banding
Finish: High Polish
Setting: 10K Yellow Gold Bezel
Back: Open-back construction
Positioned at the centre of the agate is a single diamond featuring an attractive, characterful rose mine cut.
Rose-cut diamonds are associated with early diamond-cutting traditions and are admired for their distinctive faceting and softer light reflection. Unlike modern brilliant cuts, these stones emphasize charm and individuality over uniformity.
The diamond has been set within its own polished yellow gold bezel, securely integrated into the centre of the agate gemstone.
Diamond Details:
Quantity: 1 Diamond
Cut: Rose Mine Cut
Estimated Carat Weight: 0.17 Carat
Measurements: Approximately 5.40 × 4.96 × 1.43 mm
Colour Grade: I–J
Clarity Grade: I1
Polish: Poor
Symmetry: Poor
Proportions: Poor
Setting: 10K Yellow Gold Bezel
The diamond's non-standard proportions and irregular characteristics are consistent with the individual appearance often encountered in older cutting styles.
Metal: Solid 10K Yellow Gold
Gold Purity: 10 Karat / 417
Hallmark: Stamped "10K" on the bail
Principal Gemstone: Bull's Eye Agate
Agate Dimensions: Approximately 15.00 × 10.60 × 4.10 mm
Diamond: One Rose Mine-Cut Diamond
Diamond Weight: Approximately 0.17 Carat
Setting: Oval Gold Bezel with Central Diamond Bezel
Construction: Wax Cast, Hand Assembled and Finished
Finish: High Polish
Bail: Solid Tapered Yellow Gold Bail
Total Pendant Weight: 2.11 Grams
Chain: Not included; pendant only
This pendant is accompanied by a professional jewellery insurance appraisal dated September 3, 2026, prepared by Estela Pelegrin, F.C.Gm.A., Fellow of the Canadian Gemmological Association and Jewellery Appraiser for the Canadian Antiques Road Show.
The appraisal documents the pendant's gold purity, gemstone measurements, diamond characteristics, total weight, and construction.
Appraised Fair Retail Value: $1,500.00 CAD, plus applicable taxes.
