Diamond Heart Locket Necklace in Sterling Silver (0.01 ct. tw.), 18 Inch
Chain length guide

Product information
- MetalWhite sterling silverPolished
- StoneDiamond
- Size18 inChain length
- Weight3.51 gTotal item weight
Description
A polished double heart locket hangs from a cable chain in this white diamond Mystique necklace, set in silver with a satin back and a single natural stone. The silver chain is platinum plated for a bright, cool shine, and the stone is heat-treated. The locket is hollow and opens, so you can keep something close to the heart, while the satin texture softens the polish. A spring ring clasp closes the chain at the back of the neck. Wear it over a crewneck knit or with an open collar for an evening out. A romantic pick for an anniversary or Valentine's Day.
Key Features
- Crafted in 925 sterling silver with a polished finish
- Finished with silver tone plating for lasting brilliance
- Set with white diamond mystique
- Cable necklace design
- Measures 19.6 mm wide and 18 inches long
- Secured by a spring ring clasp
- Approximate weight of 3.51 grams
- Stone treatment: heat-treated
Why You’ll Love It
- A locket that opens, so it holds something personal.
- Soft satin texture set against a bright polished shine.
- Easy to wear alone or layered with other chains.
- A romantic look that fits daytime and dinner alike.
Perfect For
Valentine's Day, anniversaries and birthdays are natural moments for this locket necklace. It suits a wife, partner, daughter or friend who likes romantic jewelry with a keepsake inside.
Product detailsWhite sterling silver · Diamond · 3.51 g
Metal
- Metal
- White sterling silver
- Purity
- Sterling Silver
- Finish
- Polished
- Construction
- Opens
- Texture
- Satin
- Chain plating
- Platinum Plated
Center stone
- Stone
- Diamond
- Origin
- Natural
- Carat weight
- .005 ct. tw.
- Color
- White
- Number of stones
- 1
- Treatment
- Heating
Measurements
- Pendant length
- 25.15 mm
- Pendant width
- 19.6 mm
- Chain length
- 18 in
- Chain width
- 1.45 mm
- Clasp
- Spring Ring
- Total carat weight
- 0.005 ct. tw.
- Weight
- 3.51 g
- Bail
- 5.5 × 2.5 mm
Style & design
- Necklace type
- Themed Necklace
- Chain style
- Cable
- Feature
- Hollow
- Also
- Satin Back
- Style
- Romantic
More
- Made in
- United States
- Birthstone
- April
- Item #
- SJQG-QLS946
Our standards
- Stamped with its metal type (e.g. 14K, 925)
- Diamonds are conflict-free
Length & fitLength guide · 30-day length exchanges

If the length isn’t right, you can exchange it within 30 days of delivery.
Shipping & returnsFree insured shipping over $99 · 30-day returns
Free, insured shipping on US orders of $99 or more.
Return it within 30 days of delivery, unworn and in its original packaging.
Exchange it within 30 days for another size or another piece.
Covered by our One-Year Limited Jewelry Warranty against manufacturing defects.
What’s in the boxYour necklace in our signature blue padded gift box
- Your necklace
- Our signature blue padded jewelry gift box
- A packing slip with no prices on it
Jewelry careStore each piece on its own in a soft pouch
Store each piece on its own in a soft pouch or lined box, so nothing scratches it.

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Diamond Necklaces, answered
Straight answers about diamond necklaces. See all Diamond Necklaces
- Free Shipping
- US Orders $99+
- Exchanges
- 30 Days
What affects the price of diamond necklaces?
Metal, diamond weight and diamond type drive the price. Solid 14K gold costs more than sterling silver or gold-plated silver, and a higher total carat weight raises it further. Lab-grown and natural diamonds are priced differently too. Use the Price filter on this page to set a budget.
Which diamond necklace styles are most popular?
Infinity, teardrop and circle styles lead the list. Diamond hearts, lockets and two-stone necklaces in 14K gold follow closely, with bar slide and solitaire designs also well represented. Most are on an 18 inch chain, so they sit near the collarbone.
Should I choose a lab-grown or natural diamond necklace?
Both are real diamonds with the same sparkle. Lab-grown stones are made in a lab, and many of the larger necklaces here use them, which allows a bigger total carat weight. Each product title says whether the diamonds are lab-grown, so check it as you browse.
Which diamond necklace is best for everyday wear?
A solitaire, small teardrop or bar slide suits daily wear. Their simple shapes sit close to the neck and are easy to layer under collars. Choose 14K gold for the most durable everyday option, since plated pieces can wear over time.
Is white gold or yellow gold better for a diamond necklace?
Choose white gold for a cool look, yellow for warmth. White gold makes the diamonds look bright and icy, while yellow gold gives a richer glow. Some teardrops also come in two-tone gold. Pick the color that matches the jewelry the wearer already owns.
How do I care for a diamond necklace?
Clean it gently and store it separately. Wipe with a soft cloth or use mild soapy water and a soft brush, then dry well. Keep it in a pouch so the chain does not tangle. See our jewelry care tips for more.