Collection: Newest Products
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The Signature Hidden Halo Ring
Regular price From $950.00 AUDRegular priceUnit price / perSale price From $950.00 AUDThe Oval Hidden Halo Solitaire Ring
Exclusive Moissanite Collection
D Color · VVS1 Clarity · GRA Certified
Expertly crafted, this Oval Hidden Halo Solitaire Ring showcases a brilliant 2.00ct moissanite, designed to maximize light return through its elongated oval silhouette. The discreet hidden halo adds an extra layer of sparkle beneath the center stone, enhancing brilliance without distracting from the clean solitaire aesthetic. Ethically sourced and exceptionally durable, this ring offers a perfect balance of luxury, sustainability, and timeless elegance.
Details
- Center Stone: Moissanite Diamond 2.00ct
- Shape: Oval Cut
- Color: D
- Clarity: VVS1
- Setting: Solitaire with Hidden Halo
- Band: Polished Band
- Metal: 10k,14k and 18k
- Metal Color: Yellow Gold or White Gold
- Certification: GRA Certified with Laser Inscription
This design is fully customizable to your specifications. For bespoke requests or questions, please email contact@agcojewellery.com
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1.52ct Oval Lab Grown Diamond (Colour G, Clarity VS1, IGI)
Regular price $824.00 AUDRegular priceUnit price / perSale price $824.00 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 1.52
- Colour: G
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 9.35x6.33x3.98mm
- L/W Ratio: 1.48
- Table: 62%
- Depth: 62.9%
- Certificate: IGI
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ROSEMARIE Radiant Halo Pavé
Regular price From $2,300.00 AUDRegular priceUnit price / per$1,398.00 AUDSale price From $2,300.00 AUDInfinite sparkle. Radiant confidence.
The Rosemarie engagement ring features a dazzling radiant-cut center stone, surrounded by a meticulously set halo of round brilliant diamonds. The pavé band adds an extra layer of sparkle, making this piece a glamorous yet timeless choice.
Designed for lovers of radiant geometry and celestial shimmer, Rosemarie captures light—and hearts—with every movement.
- Setting Style: Halo with Pavé Diamond Band
- Center Stone: Radiant Cut (Lab-Grown or Natural Diamond)
- Side Stones: Round Brilliant Halo + Pavé
- Metal: 18K White Gold (Also available in Rose, Yellow Gold, or Platinum)
- Prongs: Classic Claw
Note: Price is for the setting only. Our team will help you select the perfect center stone to suit your style and budget.
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CELESTINE Marquise Halo Pavé
Regular price From $3,898.00 AUDRegular priceUnit price / per$1,598.00 AUDSale price From $3,898.00 AUDElegant from every angle. Celestial in presence.
The Celestine ring is a timeless showpiece featuring a dazzling marquise-cut center stone, accentuated by a halo of round brilliant diamonds. The pavé band adds graceful sparkle, enhancing the ring’s celestial brilliance.
Designed for the elegant dreamer, Celestine embodies a perfect balance between unique silhouette and radiant symmetry.
- Center Stone: Marquise Cut (Lab-Grown or Natural)
- Setting Style: Double Halo with Pavé Band
- Side Stones: Round Brilliant Cut
- Metal: 18K White Gold (Available in Yellow, Rose Gold, or Platinum)
- Prongs: Classic Round Claw
\Note: Price is for setting only. Our consultants will help you find your perfect center stone based on your preferences and budget.
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2.21ct Oval Lab Grown Diamond (Colour F, Clarity VS1, IGI)
Regular price $1,957.95 AUDRegular priceUnit price / perSale price $1,957.95 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 2.21
- Colour: F
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 10.52x7.33x4.45mm
- L/W Ratio: 1.44
- Table: 64%
- Depth: 60.7%
- Certificate: IGI
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2.21ct Oval Lab Grown Diamond (Colour F, Clarity VS1, IGI)
Regular price $1,957.95 AUDRegular priceUnit price / perSale price $1,957.95 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 2.21
- Colour: F
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 10.52x7.33x4.45mm
- L/W Ratio: 1.44
- Table: 64%
- Depth: 60.7%
- Certificate: IGI
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2.50CT Elongated Cushion Lab Grown Diamond (Colour E, Clarity VS1, IGI)
Regular price $3,598.00 AUDRegular priceUnit price / per$4,927.00 AUDSale price $3,598.00 AUD- Type: Elongated Cushion Lab Grown Diamond
- Shape: Elongated Cushion
- Carat: 2.50
- Colour: E
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Certificate: IGI
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Loretta - Oval Trilogy Diamond Ring with Pear Side Stones
Regular price $3,417.00 AUDRegular priceUnit price / perSale price $3,417.00 AUD18K Yellow Gold / 2 x 0.30ct Pear Lab Diamonds
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3.12ct Round Lab Grown Diamond (Colour G, Clarity SI1, Cut ID, IGI)
Regular price $2,222.67 AUDRegular priceUnit price / perSale price $2,222.67 AUD- Type: Lab Grown Diamond
- Shape: Round
- Carat: 3.12
- Colour: G
- Clarity: SI1
- Cut: Ideal
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 9.36x9.4x5.8mm
- L/W Ratio: 1.00
- Table: 57%
- Depth: 61.9%
- Certificate: IGI
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1.41ct Oval Lab Grown Diamond (Colour G, Clarity VS1, IGI)
Regular price $739.67 AUDRegular priceUnit price / perSale price $739.67 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 1.41
- Colour: G
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 8.66x6.48x4.02mm
- L/W Ratio: 1.34
- Table: 60%
- Depth: 62%
- Certificate: IGI
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1.55ct Oval Lab Grown Diamond (Colour G, Clarity VS1, IGI)
Regular price $1,035.84 AUDRegular priceUnit price / perSale price $1,035.84 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 1.55
- Colour: G
- Clarity: VS1
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 9.29x6.58x4.1mm
- L/W Ratio: 1.41
- Table: 59%
- Depth: 62.3%
- Certificate: IGI
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1.50ct Oval Lab Grown Diamond (Colour E, Clarity VS2, IGI)
Regular price $1,023.69 AUDRegular priceUnit price / perSale price $1,023.69 AUD- Type: Lab Grown Diamond
- Shape: Oval
- Carat: 1.50
- Colour: E
- Clarity: VS2
- Cut: N/A
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 9.18x6.38x3.92mm
- L/W Ratio: 1.44
- Table: 59%
- Depth: 61.4%
- Certificate: IGI
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1.50ct Round Lab Grown Diamond (Colour D, Clarity VVS1, Cut ID, IGI)
Regular price $1,823.22 AUDRegular priceUnit price / perSale price $1,823.22 AUD- Type: Lab Grown Diamond
- Shape: Round
- Carat: 1.50
- Colour: D
- Clarity: VVS1
- Cut: Ideal
- Polish: Excellent
- Symmetry: Excellent
- Fluorescence: None
- Measurements: 7.33x7.37x4.52mm
- L/W Ratio: 0.99
- Table: 60%
- Depth: 61.5%
- Certificate: IGI
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2.10 Carat Radiant Lab Grown IGI certified Loose diamond, F color | VVS2 clarity
Regular price $1,998.00 AUDRegular priceUnit price / perSale price $1,998.00 AUD2.10 ct Radiant IGI certified Loose diamond, F color | VVS2 clarity
IGI Certified -
2.57 ct Round GIA certified Loose diamond, D color | SI2 clarity | EX cut
Regular price $51,469.38 AUDRegular priceUnit price / perSale price $51,469.38 AUD{"id":"7d139947-2496-4733-9c62-b2aa4feed556","price":3404200,"supplierStockId":"9749B9785","certificate":{"id":"7734353a-e7bd-52f8-8b15-504721bdff21","certNumber":"2215837817","lab":"GIA","shape":"ROUND","color":"D","colorShade":null,"carats":2.57,"cut":"EX","symmetry":"EX","polish":"EX","clarity":"SI2","depth":"5.480000","f_color":null,"f_overtone":null,"f_intensity":null,"floInt":"FNT","width":"8.740000","length":"8.690000","table":"57.000000","depthPercentage":"62.800000","v360":{"frame_count":256,"url":"https://d2rlicyi7sudqr.cloudfront.net/aHR0cHM6Ly9kMzI4dnY4NnI1bnBqNy5jbG91ZGZyb250Lm5ldC9WMzYwX3ZpZXdlcnMvdjQuMC9WaXNpb24zNjAuaHRtbD9zdXJsPWh0dHBzOi8vZDMyOHZ2ODZyNW5wajcuY2xvdWRmcm9udC5uZXQvVjM2MC9fdjQuMC8mZD1QSEstMDM0NyZzdj0wLDEsMiwzLDQsNSw2","top_index":"0"},"image":null}} -
4.04 Carat H-VS1 Round Cut Diamond
Regular price $74,113.00 AUDRegular priceUnit price / perSale price $74,113.00 AUD6643531ba86d8e2c5e5f0a22 -
CATHERINE Pavé Cathedral with Hidden Halo
Regular price From $1,998.00 AUDRegular priceUnit price / perSale price From $1,998.00 AUDCathedral Solitaire Collection Catherine Cathedral Solitaire with Hidden Halo & Pavé Band
A modern classic of balance and brilliance, the Catherine features a refined princess-cut cathedral setting with a hidden halo and delicate pavé band. Designed to showcase your chosen centre diamond with timeless elegance and exceptional detail.
Catherine Cathedral Solitaire — Architectural Elegance with Hidden Brilliance
The Catherine Cathedral Solitaire Engagement Ring represents the perfect harmony between classic structure and contemporary refinement.
Designed with graceful cathedral shoulders, this setting elevates the centre stone while creating an elegant sense of height and presence. The clean geometric lines of the princess cut are complemented by the softness of a hidden halo beneath the diamond, adding a subtle layer of brilliance visible from every angle.
A delicate pavé-set band completes the design, introducing refined sparkle while maintaining the sophisticated simplicity of a true solitaire engagement ring.
Setting Specifications
Design Name
Catherine Cathedral Solitaire
Centre Stone Shape
Princess Cut Diamond
Setting Style
4-Claw Cathedral Solitaire with Hidden Halo
Band Width
2.0 mm
Side Stones
32 Pavé Diamonds*
Side Diamond Weight
0.32ct Total Weight*
Centre Stone Size
Suitable for 1ct – 5ct Diamonds
Metal Options
18K Yellow Gold, White Gold, Rose Gold or Platinum
Hidden Halo Detail for Subtle Extra Sparkle
A hidden halo adds an unexpected element of brilliance beneath the centre diamond. Unlike a traditional halo visible from the top view, this design detail reveals itself through movement and side angles.
The additional diamonds create beautiful flashes of light while maintaining the clean solitaire appearance from above.
This makes the Catherine an ideal choice for those who appreciate refined detail rather than an overtly embellished design.
Pavé Band with Delicate Diamond Shimmer
The slim pavé band features carefully set diamonds that create a continuous line of brilliance along the ring.
At 2.0mm wide, the band maintains an elegant, feminine profile while providing the perfect balance between comfort, durability and visual refinement.
The pavé detailing enhances the overall design without competing with the centre diamond, allowing the ring to remain sophisticated and timeless.
A Setting Designed Around Your Perfect Diamond
The Catherine is offered as a setting only, allowing you the freedom to select the perfect centre diamond to complete your engagement ring.
Choose from princess-cut diamonds in your preferred carat weight, colour and clarity, or work with our Diamond Concierge team to source a diamond that perfectly matches your vision.
Available for diamonds from 1ct to 5ct, this versatile cathedral solitaire provides an elegant foundation for a truly personalised engagement ring.
Bespoke Diamond Ring Design with AG & CO Jewellery
Every engagement ring tells a personal story. Through our bespoke design process, the Catherine can be customised with your preferred metal, diamond specifications and personalised details.
Our team provides expert diamond guidance, custom design support and detailed CAD previews to help create a ring that feels uniquely yours.
Please NoteThis listing is for the setting only. The centre diamond is not included, allowing you to select your preferred princess-cut diamond separately. Side stone quantities and total carat weights may vary slightly depending on final ring size and custom specifications.
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LIORA Oval with Cluster Trio Accents
Regular price From $2,998.00 AUDRegular priceUnit price / perSale price From $2,998.00 AUDCustom Diamond Ring Setting with Oval Elegance and Trio Sparkle
Brilliance in every direction.
The Liora engagement ring showcases a luminous oval-cut center stone set in 18k yellow gold and embraced by three meticulously matched round brilliant diamonds on either side. The clustered trio accent gives the illusion of a sparkling bloom around the center, offering a romantic and vintage-inspired elegance.
Its warm golden setting is elevated with claw prongs that securely cradle each diamond while maintaining a light and airy presence on the hand.
Liora, meaning “my light,” captures the joy, brilliance, and warmth of true love.
- Setting Style: Cluster Trio Accents
- Center Stone: Oval Cut (Lab-Grown or Natural Diamond)
- Side Stones: Round Brilliant Trio per Side
- Metal: 14K or 18K Yellow Gold (also available in Rose, White Gold, or Platinum)
- Prongs: Classic Claw
Note: Price is for the setting only. We offer complimentary stone sourcing based on your preferences and budget.
Refined Oval Center with Balanced Cluster Details
The LIORA Oval with Cluster Trio Accents is a graceful custom diamond ring setting designed to highlight the beauty of an oval center stone. Its elongated shape creates a soft, elegant look that flatters the finger while offering a timeless appeal. The cluster trio accents on each side add extra brilliance without overwhelming the design, giving the ring a balanced and polished finish. This setting is ideal for shoppers who want a piece that feels classic yet distinctive, with thoughtful detailing that enhances the center diamond from every angle.
Designed for Comfort, Style, and Lasting Beauty
This custom diamond ring setting combines visual elegance with everyday wearability. The LIORA design is carefully crafted to sit comfortably while maintaining a secure and refined structure. Its trio accent layout brings dimension and sparkle, making the ring feel more luxurious while still staying sophisticated. Whether chosen for an engagement ring or a special custom piece, this setting offers a versatile foundation for personal expression. It is a beautiful choice for anyone looking for a design that feels meaningful, modern, and easy to wear for years to come.
A Versatile Choice for a Personalized Ring Design
LIORA Oval with Cluster Trio Accents is an excellent starting point for a custom ring journey because it pairs well with a variety of diamond sizes and styles. The oval shape creates a bright, open look, while the trio accents help frame the center stone and add subtle sparkle. This makes it a strong choice for clients who want a custom diamond ring setting that feels elegant but still unique. With its clean lines, balanced proportions, and detailed side accents, LIORA offers a beautiful foundation for a ring that reflects personal taste and timeless style.
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ALINA 6 Claw Marquise Solitaire
Regular price From $1,498.00 AUDRegular priceUnit price / perSale price From $1,498.00 AUDAlina Ring — Marquise 6-Prong Solitaire
The Alina is the essence of refined simplicity. Featuring an elongated marquise-cut center stone secured in a classic six-prong setting, it celebrates timeless beauty with a modern edge. The sleek, tapered band draws the eye to the diamond’s graceful shape, allowing its brilliance and symmetry to take center stage. Handcrafted in 18K gold or platinum, the Alina embodies understated luxury and enduring elegance.
Center stone size 1 ct – 5 ct Please note: The centre stone is not included with this setting, allowing you the freedom to select the perfect diamond to complete this exquisite piece.
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4.75 Carat H-VS1 Round Lab Created Diamond
Regular price $88,994.00 AUDRegular priceUnit price / perSale price $88,994.00 AUD6634ce1148f859201f7ea5fe -
4.56 Carat F-SI2 Round Cut Diamond
Regular price $68,598.00 AUDRegular priceUnit price / perSale price $68,598.00 AUD6634ce1048f859201f7e99c1 -
9.03 Carat F-VS2 Radiant Lab Created Diamond
Regular price $3,504.00 AUDRegular priceUnit price / perSale price $3,504.00 AUD6628f7d4fbc6781a2c2da83a -
ISLA - 6 Claw Round Solitaire
Regular price From $1,498.00 AUDRegular priceUnit price / perSale price From $1,498.00 AUDIsla sounds like a delightful choice for those who appreciate timeless elegance with a touch of charm! The classic round solitaire design, featuring a beautiful round cut stone, exudes simplicity and grace. What sets Isla apart are her unique and charming details, including the graceful 6 claw trellis setting that accentuates the center stone beautifully. This setting not only adds a touch of sophistication but also ensures that the stone is securely held in place while allowing maximum light to enhance its brilliance. With its sweet and simple design, Isla is sure to be cherished as a symbol of love and commitment for years to come.
Band Width: 2mm
Center Stone Size: 1ct-5ctPlease note that the the center stone is not included with this setting, allowing you the freedom to select the perfect diamond to complete this exquisite piece.
14K Yellow Gold14K White Gold18K Yellow Gold18K White Gold -
ISABELLA Oval Halo Pavé Ring
Regular price From $1,898.00 AUDRegular priceUnit price / perSale price From $1,898.00 AUDISABELLA Oval Pavé Engagement Ring with Halo Sparkle
Isabella captures the essence of timeless romance, where vintage elegance meets modern refinement. Designed to enhance the beauty of an oval centre stone, this piece radiates a soft, elongated brilliance that feels both graceful and captivating
Design Details
Band Width 1.8mm Side Stones Count 44* Side Stones Weight 0.67ct* Centre Stone Size 1.00ct – 5.00ct
*Carat weight and stone count may vary slightly depending on ring size and centre stone dimensions.
Centre Stone
This setting is designed to be paired with your chosen centre diamond. The centre stone is not included, allowing you to customise your ring with a diamond that perfectly reflects your vision.
Elegant Oval Center with Brilliant Halo
The ISABELLA oval pavé engagement ring is designed for brides who love timeless beauty with a modern touch. Its oval center shape creates a graceful, lengthening effect on the finger, while the halo setting adds extra brilliance around the center stone. This style gives the ring a bold yet refined presence, making it an ideal choice for an engagement ring that feels both classic and current. The pavé band adds continuous sparkle, helping the ring shine from every angle and creating a luxurious look that stands out naturally.
Refined Pavé Detailing for Everyday Luxury
Crafted with a focus on detail, this ring features a pavé band that enhances the overall brilliance without overpowering the center design. The small, closely set stones create a smooth line of light that complements the oval shape beautifully. As an oval pavé engagement ring, it offers a balanced combination of elegance and radiance, making it suitable for daily wear as well as special moments. The halo setting boosts the visual size of the center stone, while the band’s delicate shimmer gives the piece a polished, high-end finish.
A Timeless Choice for Modern Romance
ISABELLA is made for those who want a ring that feels romantic, sophisticated, and easy to cherish for years to come. The oval silhouette is flattering and versatile, pairing well with many wedding band styles and personal tastes. The halo and pavé details work together to create a bright, unforgettable look that never feels too heavy or too simple. If you are looking for an oval pavé engagement ring with lasting appeal, this design delivers a perfect mix of sparkle, structure, and elegance. It is a beautiful symbol of love with enduring style.