Lab-Grown Diamond Heart Necklaces

Express your love with lab-grown diamond heart necklaces from KAY. Combining romantic design with modern sustainability, lab-created diamond heart necklaces are the perfect gift for someone special or a treat for yourself.

Lab-Grown Diamond Heart Necklaces

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Family & Mother's Birthstone Heart Necklace (2-4 Stones and Lines)Personalized

KAY Signature Collection Lab-Grown Diamond Tilted Mini Heart Necklace 1/8 ct tw 18K Yellow Gold-Plated Sterling Silver 18"

Mother & Child Heart-Shaped Birthstone Necklace (1 Stone)Personalized

KAY Signature Collection Lab-Grown Diamond Heart Necklace 1/2 ct tw 10K Yellow Gold 18"

STUDIO BY KAY Lab-Grown Diamond Textured Heart Necklace 1/10 ct tw 24K Yellow Gold Vermeil Sterling Silver 20"New

KAY Lab-Grown Diamond Accent Slanted Heart Disc Necklace Sterling SilverOnline Exclusive

KAY Lab-Grown Diamonds 3-Stone Slanted Heart Necklace 1/20 ct tw Sterling SilverOnline Exclusive

KAY Lab-Grown Diamonds Heart & "Mini" Charms Necklace 1/4 ct tw 10K Yellow GoldNew

KAY Lab-Grown Diamonds Scatter Heart & "Mom" Charms Necklace 1/3 ct tw 10K Yellow GoldNew

STUDIO BY KAY Baguette-Cut Lab-Grown Diamond Heart Necklace 1/3 ct tw 24K Yellow Gold Vermeil Sterling Silver

KAY Lab-Grown Diamond Accent Slanted Freeform Open Heart Necklace Sterling SilverOnline Exclusive

STUDIO BY KAY Lab-Grown Diamond Charms Necklace 1/6 ct tw 24K Yellow Gold Vermeil Sterling Silver 18"

KAY Lab-Grown Diamonds Heart-Shaped & Round-Cut Graduated Tennis Necklace 7 ct tw Sterling Silver 17"New

KAY Lab-Grown Diamonds Heart Halo Necklace 1/4 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamonds Tilted Heart Necklace 1/10 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamond Accent Open Heart Necklace Sterling SilverOnline Exclusive

KAY Lab-Grown Diamonds Heart Frame Necklace 1/4 ct tw 10K White Gold 18"New

KAY Lab-Grown Diamonds Heart Necklace 1/20 ct tw Sterling SilverOnline Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/10 ct tw Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Double Heart Lariat Necklace 1/6 ct tw 18K Yellow Gold-Plated Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Swirling Heart Necklace 1/20 ct tw 18K Yellow Gold-Plated Sterling Silver 18"New

KAY Lab-Grown Diamonds Heart Necklace 1/2 ct tw 14K Yellow Gold-Plated Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Heart-Shaped Necklace 1/2 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamonds Double Tilted Heart Necklace 1/15 ct tw Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Interlocking Hearts Necklace 1/4 ct tw Sterling Silver & 10K Rose Gold 18"Online Exclusive

Memories Moments Magic Lab-Grown Diamond Double Heart Necklace 1/2 ct tw Sterling Silver & 10K Yellow Gold 18"New

KAY Lab-Grown Diamonds Heart-Shaped Half-Bow Necklace 1/6 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/4 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/4 ct tw Sterling Silver 18"New

KAY Lab-Grown Diamonds Intertwined Double Heart Necklace 1/4 ct tw Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Heart Lariat Necklace 1/5 ct tw Sterling Silver 18"New

KAY Lab-Grown Diamonds Heart Multi-Stone Double Halo Necklace 3/4 ct tw Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Heart Necklace 1/10 ct tw 10K Yellow Gold 18"New

KAY Lab-Grown Diamonds Heart Lock Necklace 1/6 ct tw 18K Yellow Gold-Plated Sterling Silver 18"New

KAY Lab-Grown Diamonds Pear-Shaped Interlocking Hearts Necklace 1/2 ct tw 10K Yellow Gold 18"Online Exclusive

KAY Lab-Grown Diamonds Round-Cut Solitaire Heart Necklace 1/2 ct tw 10K Yellow Gold 18" (F/SI2)New

KAY Lab-Grown Diamonds Tilted Open Heart Necklace 1/2 ct tw 14K Yellow Gold-Plated Sterling Silver 18"Online Exclusive

KAY Lab-Grown Diamonds Looping Heart Necklace 1/10 ct tw Sterling Silver 18"New

Family & Mother's Birthstone Heart Necklace 18" (2-4 Stones and Lines)Personalized

KAY Lab-Grown Diamonds Heart-Shaped Drop Necklace 1/2 ct tw 10K Yellow Gold 18"Online Exclusive

STUDIO BY KAY Lab-Grown Diamond Heart Link Necklace 1/3 ct tw 24K Yellow Gold Vermeil Sterling Silver 18"

STUDIO BY KAY Heart-Shaped Lab-Grown Diamond "I Heart U" Necklace 1/4 ct tw Sterling Silver 18"Online Exclusive

Family & Mother's Birthstone Heart Necklace (2-4 Stones and Lines)
Personalized

Mother & Child Heart-Shaped Birthstone Necklace (1 Stone)
Personalized

STUDIO BY KAY Lab-Grown Diamond Textured Heart Necklace 1/10 ct tw 24K Yellow Gold Vermeil Sterling Silver 20"
New

KAY Lab-Grown Diamond Accent Slanted Heart Disc Necklace Sterling Silver
Online Exclusive

KAY Lab-Grown Diamonds 3-Stone Slanted Heart Necklace 1/20 ct tw Sterling Silver
Online Exclusive

KAY Lab-Grown Diamonds Heart & "Mini" Charms Necklace 1/4 ct tw 10K Yellow Gold
New

KAY Lab-Grown Diamonds Scatter Heart & "Mom" Charms Necklace 1/3 ct tw 10K Yellow Gold
New

KAY Lab-Grown Diamond Accent Slanted Freeform Open Heart Necklace Sterling Silver
Online Exclusive

KAY Lab-Grown Diamonds Heart-Shaped & Round-Cut Graduated Tennis Necklace 7 ct tw Sterling Silver 17"
New

KAY Lab-Grown Diamonds Heart Halo Necklace 1/4 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamonds Tilted Heart Necklace 1/10 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamond Accent Open Heart Necklace Sterling Silver
Online Exclusive

KAY Lab-Grown Diamonds Heart Frame Necklace 1/4 ct tw 10K White Gold 18"
New

KAY Lab-Grown Diamonds Heart Necklace 1/20 ct tw Sterling Silver
Online Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/10 ct tw Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Double Heart Lariat Necklace 1/6 ct tw 18K Yellow Gold-Plated Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Swirling Heart Necklace 1/20 ct tw 18K Yellow Gold-Plated Sterling Silver 18"
New

KAY Lab-Grown Diamonds Heart Necklace 1/2 ct tw 14K Yellow Gold-Plated Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Heart-Shaped Necklace 1/2 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamonds Double Tilted Heart Necklace 1/15 ct tw Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Interlocking Hearts Necklace 1/4 ct tw Sterling Silver & 10K Rose Gold 18"
Online Exclusive

Memories Moments Magic Lab-Grown Diamond Double Heart Necklace 1/2 ct tw Sterling Silver & 10K Yellow Gold 18"
New

KAY Lab-Grown Diamonds Heart-Shaped Half-Bow Necklace 1/6 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/4 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamonds Double Heart Necklace 1/4 ct tw Sterling Silver 18"
New

KAY Lab-Grown Diamonds Intertwined Double Heart Necklace 1/4 ct tw Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Heart Lariat Necklace 1/5 ct tw Sterling Silver 18"
New

KAY Lab-Grown Diamonds Heart Multi-Stone Double Halo Necklace 3/4 ct tw Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Heart Necklace 1/10 ct tw 10K Yellow Gold 18"
New

KAY Lab-Grown Diamonds Heart Lock Necklace 1/6 ct tw 18K Yellow Gold-Plated Sterling Silver 18"
New

KAY Lab-Grown Diamonds Pear-Shaped Interlocking Hearts Necklace 1/2 ct tw 10K Yellow Gold 18"
Online Exclusive

KAY Lab-Grown Diamonds Round-Cut Solitaire Heart Necklace 1/2 ct tw 10K Yellow Gold 18" (F/SI2)
New

KAY Lab-Grown Diamonds Tilted Open Heart Necklace 1/2 ct tw 14K Yellow Gold-Plated Sterling Silver 18"
Online Exclusive

KAY Lab-Grown Diamonds Looping Heart Necklace 1/10 ct tw Sterling Silver 18"
New

Family & Mother's Birthstone Heart Necklace 18" (2-4 Stones and Lines)
Personalized

KAY Lab-Grown Diamonds Heart-Shaped Drop Necklace 1/2 ct tw 10K Yellow Gold 18"
Online Exclusive

STUDIO BY KAY Heart-Shaped Lab-Grown Diamond "I Heart U" Necklace 1/4 ct tw Sterling Silver 18"
Online Exclusive