The 18K Solid Gold Single Diamond Heart Necklace is a delicate and elegant piece of jewelry that beautifully symbolizes love and affection. Crafted from premium 18K Solid Gold, this necklace features a classic heart-shaped pendant, measuring 10 mm, that holds a single, sparkling diamond at its center.
The Diamond is 1.75 mm in size and has a total carat weight of 0.02 ctw, offering a subtle yet brilliant sparkle. With a G color and SI clarity, the diamond is carefully chosen for its quality and radiance. The burnish setting securely holds the diamond, giving it a seamless and sleek appearance, allowing the stone to shine without visible prongs.
This necklace is crafted with non-conflict diamonds, ensuring ethical sourcing and peace of mind for the wearer. Its simple yet timeless design makes it suitable for everyday wear or as a thoughtful gift for a loved one.
With a refined and polished look, this heart necklace is perfect for layering or wearing on its own as a statement of understated elegance. The necklace is ready to ship in 2 weeks, making it an excellent choice for a special occasion or as a surprise gift.
The 18K Solid Gold Single Diamond Heart Necklace is not only a charming piece of jewelry but also a meaningful symbol of love and care, making it a cherished addition to any jewelry collection.
 
Product Details :
 
Metal: 18K Solid Gold (Available in White ,Rose Gold and Yellow Gold)
Number of Stones: 1
Stone Size: 1.75 MM
Total CTW: 0.02
Diamond Color & Clarity: G Color SI Clarity
Heart Size: 10 MM
Setting Type: Burnish Setting
Additional Notes: Non-Conflict Diamonds
Ready to Ship: In 2 weeks
Certifications: GIA & BIS Hallmarked  
Shipping Time: 15-25 Business Days
Customer Support: Available via live chats and video calls.

Frequently Asked Questions
What occasions is this necklace best suited for?
This necklace works for both everyday wear and special occasions — the solid gold setting and diamond stone dress up simple outfits while still being subtle enough for daily use.
What's the price range for this heart diamond necklace across different gold karats?
At The Karat Store, this heart diamond necklace starts at $1,301.82 in 10K gold, $1,468.72 in 14K gold, and $1,669 in 18K gold — all solid gold, not plated.
Should I choose 10K, 14K, or 18K gold for this necklace?
18K gold (75% pure) has the richest color and softest feel. 14K gold (58.3% pure) is the most popular balance of durability and value. 10K gold (41.7% pure) is the most affordable and most scratch-resistant.
Is this necklace solid gold all the way through, or just gold-plated?
This necklace is solid gold throughout, not gold-plated — the karat purity runs all the way through the metal, not just a surface layer. Unlike plated jewelry, it won't flake, discolor, or expose base metal over time, and it carries a karat hallmark stamp as proof of authenticity.
What chain length should I choose for this necklace?
Chain length is a matter of preference and where you want the pendant to sit: 16" sits at the collarbone, 18" is the most versatile everyday length, and 20"+ sits lower for a more dramatic look. Check the size options on this page for what's available.
What's the best way to keep this diamond necklace looking new?
Soak briefly in warm water with a drop of mild dish soap, gently brush with a soft-bristled brush, rinse, and pat dry. Avoid chlorine, harsh chemicals, and ultrasonic cleaners, and remove before swimming, showering, or exercising.