Moissanite Engagement Rings

  • The Signature Hidden Halo Ring

    The Signature Hidden Halo Ring

    The Signature Hidden Halo Ring

    From $950.00 AUD
    From $950.00 AUD

    The 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
  • The Signature Meridian Split Ring AG & CO Jewellery

    The Signature Meridian Split Ring

    The Signature Meridian Split Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Meridian Split Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A refined evolution of our Signature Meridian design, emphasizing clean lines, balance, and architectural elegance. This updated edition features a polished split shank with no pavé, allowing the focus to remain on the striking center moissanite and its elegant half-moon side stones. Crafted with a low-profile donut setting, the ring sits comfortably on the finger while maintaining a bold and sophisticated silhouette. Double prongs provide both security and a refined finishing detail.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Side Stones: Half-Moon Diamonds
    • Color: D
    • Clarity: VVS1
    • Setting: Low-Profile Donut Setting
    • Prongs: Double Prongs
    • Band: Polished Split Shank (No Pavé)
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Eclipse Split Ring AG & CO Jewellery

    The Signature Eclipse Split Ring

    The Signature Eclipse Split Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Eclipse Split Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A bold evolution of our Signature Eclipse design, elevated with a refined split shank for added dimension and presence. The Signature Eclipse Split Ring features a sleek bezel-set center moissanite, offering a modern, secure setting with a clean silhouette. A low-profile donut-style cathedral allows the ring to sit comfortably on the finger, while the split shank and 3D pavé detailing enhance brilliance and visual impact from every angle.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Color: D
    • Clarity: VVS1
    • Setting: Bezel Setting with Low-Profile Donut Cathedral
    • Band: Split Shank with 3D Pavé Diamonds
    • Metal: 14k or 18k Gold / Platinum
    • 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.
  • The Signature Grande Ovalé Ring AG & CO Jewellery

    The Signature Grande Ovalé Ring

    The Signature Grande Ovalé Ring

    From $4,999.00 AUD
    From $4,999.00 AUD

    The Signature Grande Ovalé Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A refined evolution of our iconic Signature Grande design, elevated with oval-cut diamonds set along the band for enhanced brilliance and elegance. The Signature Grande Ovalé Ring maintains the bold presence of the original, while introducing a softer, elongated sparkle that flows seamlessly toward the center stone. Diamond-set prongs and a hidden halo complete the design, adding dimension and radiance from every angle.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Band Diamonds: Oval-Cut Diamonds
    • Color: D
    • Clarity: VVS1
    • Setting: Solitaire with Hidden Halo
    • Prongs: Diamond-Set Prongs
    • Band: Oval Diamond Band
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Atlas Ring AG & CO Jewellery

    The Signature Atlas Ring

    The Signature Atlas Ring

    From $3,950.00 AUD
    From $3,950.00 AUD

    The Signature Atlas Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A bold, modern solitaire designed with clean lines and refined strength. The Signature Atlas Ring features a distinctive 2.2mm semi-squared band, offering a contemporary profile with a confident presence on the finger. Diamond-set prongs add brilliance from every angle, while a hidden halo enhances sparkle beneath the center stone without disrupting the ring’s sleek silhouette. A statement design crafted to showcase larger moissanite diamonds with precision and elegance.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Color: D
    • Clarity: VVS1
    • Setting: Solitaire with Hidden Halo
    • Prongs: Diamond-Set Prongs
    • Band: 2.20mm Semi-Squared Band
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Fortress Ring AG & CO Jewellery

    The Signature Fortress Ring

    The Signature Fortress Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Fortress Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A powerful solitaire design defined by strength, structure, and refined detail. The Signature Fortress Ring features a bold 2.2mm channel-set band for a clean, seamless look with exceptional durability. Diamond-set prongs add brilliance at every angle, while a hidden halo enhances sparkle beneath the center stone without compromising the ring’s sleek profile. Designed to showcase larger moissanite diamonds with confidence and elegance.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Color: D
    • Clarity: VVS1
    • Setting: Solitaire with Hidden Halo
    • Prongs: Diamond-Set Prongs
    • Band: 2.20mm Channel-Set Diamond Band
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Duet Ring AG & CO Jewellery

    The Signature Duet Ring

    The Signature Duet Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Duet Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A refined solitaire design defined by balance and modern elegance. The Signature Duet Ring features an integrated double-band silhouette, with each band measuring a delicate 1.5mm for a graceful yet structured look. Designed as a true solitaire, the ring is accented with single pavé diamonds for understated brilliance, while offering the option of single or double prongs to suit personal preference. A timeless statement made to highlight a larger moissanite center stone.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Design: Solitaire
    • Color: D
    • Clarity: VVS1
    • Setting: Integrated Double Band Design
    • Prongs: Single or Double Prong Option
    • Band: Dual 1.5mm Bands with Single Pavé Diamonds
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Meridian Ring AG & CO Jewellery

    The Signature Meridian Ring

    The Signature Meridian Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Meridian Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A refined statement ring designed around symmetry, proportion, and brilliance. The Signature Meridian Ring features a bold center moissanite flanked by elegant half-moon side stones, creating a timeless three-stone silhouette with exceptional presence. Crafted with a low-profile donut setting, the ring sits comfortably on the finger while maintaining a luxurious, architectural profile. Double prongs add strength and definition, while the band is available in either a 3D pavé or classic traditional finish.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Side Stones: Half-Moon Diamonds
    • Color: D
    • Clarity: VVS1
    • Setting: Low-Profile Donut Setting
    • Prongs: Double Prongs
    • Band: 2.00mm Band (3D Pavé or Traditional Option)
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Vanguard Ring AG & CO Jewellery

    The Signature Vanguard Ring

    The Signature Vanguard Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Vanguard Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A refined statement ring defined by clean geometry and balanced brilliance. The Signature Vanguard Ring features a striking center moissanite accented by elegant epaulette side stones, creating a structured yet timeless silhouette. Designed with a low-profile donut setting, the ring sits comfortably on the finger while maintaining a bold, luxurious presence. Double prongs add security and a distinctive architectural detail, while the band can be finished in either 3D pavé or a classic traditional style.

    Details

    • Center Stone: Moissanite Diamond (3CT–10CT options available)
    • Side Stones: Epaulette-Cut Diamonds
    • Color: D
    • Clarity: VVS1
    • Setting: Low-Profile Donut Setting
    • Prongs: Double Prongs
    • Band: 2.00mm Band (3D Pavé or Traditional Option)
    • Metal: 14k or 18k Gold / Platinum
    • 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.
  • The Signature Eclipse Ring AG & CO Jewellery

    The Signature Eclipse Ring

    The Signature Eclipse Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Eclipse Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A modern statement ring defined by clean lines and bold presence. The Signature Eclipse Ring features a refined bezel-set center moissanite, offering both security and a sleek, contemporary aesthetic. Designed with a low-profile donut-style cathedral setting, the ring sits comfortably on the finger while maintaining an elevated, architectural silhouette. A 3D pavé band completes the design, adding brilliance from every angle.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Color: D
    • Clarity: VVS1
    • Setting: Bezel Setting with Low-Profile Donut Cathedral
    • Band: 2.00mm 3D Pavé Diamond Band
    • Metal: 14k or 18k Gold / Platinum
    • 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.
  • The Signature Trilogy Ring AG & CO Jewellery

    The Signature Trilogy Ring

    The Signature Trilogy Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Trinity Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A bold and elegant trilogy ring designed to celebrate brilliance, balance, and presence. The Signature Trinity Ring features a striking center moissanite flanked by pear-shaped side diamonds, creating a timeless three-stone silhouette with exceptional sparkle. A 3D pavé band and refined donut-style cathedral setting allow the ring to sit lower on the finger while maintaining a graceful, statement-making profile.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Side Stones: Pear-Shaped Diamonds
    • Color: D
    • Clarity: VVS1
    • Setting: Donut-Style Cathedral Setting (Low Profile)
    • Prongs: Single Prongs
    • Band: 2.00mm 3D Pavé Diamond Band
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Heirloom Ring AG & CO Jewellery

    The Signature Heirloom Ring

    The Signature Heirloom Ring

    From $4,750.00 AUD
    From $4,750.00 AUD

    The Signature Heirloom Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A timeless statement ring inspired by vintage design and refined architectural detail. The Signature Heirloom Ring features a delicately styled 2.00mm vintage band paired with a donut-style cathedral setting, allowing the center stone to sit lower on the finger while maintaining elegance and durability. Triple split NSEW prongs secure and elevate the moissanite, creating a bold yet classic silhouette designed around larger stones.

    Details

    • Center Stone: Moissanite Diamond 4.00ct
    • Color: D
    • Clarity: VVS1
    • Setting: Donut-Style Cathedral Setting (Low Profile)
    • Prongs: Triple Split NSEW Prongs
    • Band: 2.00mm Vintage-Style Band
    • Metal: 14k or 18k Gold / Platinum
    • 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.
  • The Signature Apex Ring AG & CO Jewellery

    The Signature Apex Ring

    The Signature Apex Ring

    From $4,999.00 AUD
    From $4,999.00 AUD

    The Signature Apex Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A bold architectural statement ring designed for maximum impact with a refined, low-profile silhouette. The Signature Apex Ring features a donut-style setting with cathedral shoulders, allowing the center stone to sit lower on the finger while maintaining strength and elegance. A 3D pavé band and distinctive triple split NSEW prongs complete a design built to showcase large, high-impact moissanite diamonds.

    Details

    • Center Stone: Moissanite Diamond 4.00ct
    • Color: D
    • Clarity: VVS1
    • Setting: Donut-Style Cathedral Setting (Low Profile)
    • Prongs: Triple Split NSEW Prongs
    • Band: 2.00mm 3D Pavé Diamond Band
    • Metal: 14k or 18k Gold / Platinum
    • 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
  • The Signature Grande Ring AG & CO Jewellery

    The Signature Grande Ring

    The Signature Grande Ring

    From $4,999.00 AUD
    From $4,999.00 AUD

    The Signature Grande Ring

    Exclusive Signature Moissanite Collection

    D Color · VVS1 Clarity · GRA Certified

    A bold and luxurious statement ring from our Exclusive Signature Moissanite Collection. Designed around large, high-impact moissanite diamonds, this piece is crafted to command attention. Shown here with an oval brilliant center stone, the design is available in all shapes, including Old Mine and Moval cuts. A hidden halo, diamond-set prongs, and a diamond-encrusted band elevate the brilliance from every angle.

    Details

    • Center Stone: Moissanite Diamond 4ct
    • Shape: Oval Brilliant (available in all shapes, including Old Mine & Moval)
    • Color: D
    • Clarity: VVS1
    • Setting: Hidden Halo with Diamond-Set Prongs
    • Band: 3.00mm Round Brilliant Diamonds
    • Metal: 14k or 18k Gold / Platinum
    • Metal Color: Yellow Gold or White Gold
    • Certification: GRA Certified with Inscription

    This design is fully customizable. For bespoke requests or questions, please email contact@agcojewellery.com
  • Elongated Hexagon Moissanite Stone AG & CO Jewellery

    Elongated Hexagon Moissanite Stone

    Elongated Hexagon Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Elongated Hexagon Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Half Moon Moissanite Stone AG & CO Jewellery

    Half Moon Moissanite Stone

    Half Moon Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Half Moon Moissanite Stone

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Baguette Moissanite Stone AG & CO Jewellery

    Baguette Moissanite Stone

    Baguette Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Baguette Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Trapezoid Moissanite Stone AG & CO Jewellery

    Trapezoid Moissanite Stone

    Trapezoid Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Trapezoid Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Trapezoid Moissanite Stone AG & CO Jewellery

    Trapezoid Moissanite Stone

    Trapezoid Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Trapezoid Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Trilliant Moissanite Stone AG & CO Jewellery

    Trilliant Moissanite Stone

    Trilliant Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Trilliant Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Lozenge Moissanite Stone AG & CO Jewellery

    Lozenge Moissanite Stone

    Lozenge Moissanite Stone

    From $398.00 AUD
    From $398.00 AUD

    Lozenge Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Trapezoid Baguette Moissanite Stone AG & CO Jewellery

    Trapezoid Baguette Moissanite Stone

    Trapezoid Baguette Moissanite Stone

    From $398.00 AUD
    From $398.00 AUD

    Trapezoid Baguette Moissanite Stone

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Asscher Moissanite Stone AG & CO Jewellery

    Asscher Moissanite Stone

    Asscher Moissanite Stone

    From $398.00 AUD
    From $398.00 AUD

    Asscher Moissanite Stone 

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal
  • Marquise Moissanite Stone AG & CO Jewellery

    Marquise Moissanite Stone

    Marquise Moissanite Stone

    From $298.00 AUD
    From $298.00 AUD

    Marquise Moissanite Stone

    • Color: D (Colorless)

    • Clarity: VVS1 (Very, very slight inclusions)

    • Cut: Ideal