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Featured Pieces

Fine Jewellery designed to be lived in and loved for generations.

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  • Ben’s Diamond-Encrusted Bubble Letter Necklace Ben’s Diamond-Encrusted Bubble Letter Necklace

    Ben’s Diamond-Encrusted Bubble Letter Necklace

    $17,000.00 AUD
    $17,000.00 AUD
  • The Soul Mate Radiant Diamond Ring The Soul Mate Radiant Diamond Ring

    The Soul Mate Radiant Diamond Ring

    $16,500.00 AUD
    $16,500.00 AUD
  • Chevron Natural Diamond Huggies Chevron Natural Diamond Huggies

    Chevron Natural Diamond Huggies

    $2,100.00 AUD
    $2,100.00 AUD
  • My Love, Round Diamond Studs My Love, Round Diamond Studs

    My Love, Round Diamond Studs

    $3,800.00 AUD - $6,600.00 AUD
    $3,800.00 AUD - $6,600.00 AUD
In Focus

Balearic Diamond Chain

Balearic Diamond Chain

247 Natural Diamonds. 9.89 carats of brilliance. Crafted in 18ct yellow gold and measuring 48 inches, it’s a piece you can wear long or wrap for impact. Statement-worthy on its own or layered your way. Fine jewellery made to move with you.
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Shop The Look

Discover curated looks designed to layer, love, and wear your way.

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Old European Edit
Old European Edit

Old European Edit

Ear Candy
Ear Candy

Ear Candy

Everyday Classics
Everyday Classics

Everyday Classics

Oval Edit
Oval Edit

Oval Edit

Butterfly Effect
Butterfly Effect

Butterfly Effect

Engagement Collection

At Heidi and Hart, we’re all about celebrating love your way, with diamonds you can wear every day.

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Featured Rings
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  • Emerald Cut Trilogy Diamond Engagement Ring Emerald Cut Trilogy Diamond Engagement Ring

    Emerald Cut Trilogy Diamond Engagement Ring

    $14,800.00 AUD
    $14,800.00 AUD
  • Marquise Solitaire Engagement Ring Marquise Solitaire Engagement Ring

    Marquise Solitaire Engagement Ring

    $27,000.00 AUD
    $27,000.00 AUD
  • Oval Diamond Engagement Ring with Tapered Baguettes Oval Diamond Engagement Ring with Tapered Baguettes

    Oval Diamond Engagement Ring with Tapered Baguettes

    $13,800.00 AUD - $15,800.00 AUD
    $13,800.00 AUD - $15,800.00 AUD
  • Trilogy Oval Diamond Engagement Ring with Trapezoids Trilogy Oval Diamond Engagement Ring with Trapezoids

    Trilogy Oval Diamond Engagement Ring with Trapezoids

    $14,800.00 AUD
    $14,800.00 AUD
  • Encrusted Oval Flip Ring Encrusted Oval Flip Ring

    Encrusted Oval Flip Ring

    $26,000.00 AUD
    $26,000.00 AUD
  • The Soul Mate Encrusted Radiant Diamond Ring The Soul Mate Encrusted Radiant Diamond Ring

    The Soul Mate Encrusted Radiant Diamond Ring

    $22,500.00 AUD
    $22,500.00 AUD
  • Toi Et Moi, Cushion Diamond Engagement Ring Toi Et Moi, Cushion Diamond Engagement Ring

    Toi Et Moi, Cushion Diamond Engagement Ring

    $0.00 AUD
    $0.00 AUD
  • Toi et Moi, Oval & Pear Diamond Engagement Ring Toi et Moi, Oval & Pear Diamond Engagement Ring

    Toi et Moi, Oval & Pear Diamond Engagement Ring

    $0.00 AUD
    $0.00 AUD
Our Story

Founded by Heidi and Ben, Heidi & Hart embodies a shared vision of crafting heirloom-quality jewellery that transcends mere adornment.

GIA Certified

At Heidi & Hart, we source diamonds that meet the highest standards and value transparency at every step. Many of our pieces feature GIA-certified diamonds, assessed by the Gemological Institute of America, the world’s leading authority in diamond grading.

A GIA certificate confirms your diamond’s quality and authenticity, covering the 4Cs: cut, clarity, colour and carat weight.

Whether you're selecting a certified stone for a bespoke design or remodelling a piece you already love, we’ll guide you toward a diamond that feels right for you, with confidence and clarity.

Book Your Bespoke Appointment