Heart Locket Necklace Guide

What Makes a Heart Locket Necklace Special

Of all locket shapes — oval, round, rectangular, star — the heart remains the best-selling silhouette year after year. The reason is simple: the heart shape doubles the emotional meaning. When you give someone a heart locket, you are telling them they hold a place in your heart, and the locket itself holds proof of that connection inside. It is one of the few pieces of jewelry where the symbolism of the shape and the function of the piece say exactly the same thing.

Heart lockets also carry a long history. Victorian mourning jewelry of the 1840s–1900s popularized lockets as a way to keep a loved one's portrait or lock of hair close. Heart shapes became common in the late Victorian and Edwardian eras as a romantic variation on the oval. Today they sit comfortably across aesthetics — from cottagecore and vintage revival to minimalist fine jewelry — which gives them broader gifting appeal than almost any other necklace style.

If you are exploring locket necklaces more broadly, our locket necklace guide covers all shapes and styles in depth. For the symbolism side, see our piece on locket necklace meaning.

Styles of Heart Locket Necklaces

Not all heart lockets look alike. Here are the main styles you will encounter:

Plain Classic Heart

A smooth, polished heart with no surface decoration. The shape does all the work. This is the most versatile style — it reads as romantic on Valentine's Day and tastefully sentimental on any other occasion. Works in every metal finish.

Engraved Heart Locket

The exterior face carries engraved text, a date, initials, or a simple motif like a flower or star. Engraving adds a layer of personalization that turns a beautiful piece into a one-of-a-kind keepsake. Many buyers choose to engrave on the back rather than the front for a more subtle, private touch.

Filigree and Victorian-Style Heart

Delicate open metalwork — thin wire twisted into scrolls, leaves, and lace-like patterns — covers the heart face. This style draws directly from Victorian and Edwardian jewelry traditions and suits romantic, vintage, and cottagecore aesthetics. Filigree lockets tend to feel more statement-making even at smaller sizes because of their visual texture.

Double-Sided Heart Locket

Both the front and back faces open, giving two compartments instead of one. This style is particularly meaningful for memorial jewelry (one side for a photo, one side for a lock of hair) or for couples who want to place one photo each. Double-sided lockets are typically slightly thicker than single-compartment versions.

Floating Heart Locket

A style where a smaller heart shape appears to float inside a larger clear or glass-fronted locket frame. The inner heart is often loose and moves gently when the necklace is worn. Popular for a modern, whimsical take on the locket concept.

3D Dimensional Heart

Rather than a flat pressed shape, a 3D heart locket is sculpted with depth and volume, giving it a more substantial, gift-ready presence. These often sit closer to fine jewelry territory and are a good choice when the budget allows for something more impressive.

Sizes: How to Choose the Right Heart Locket Size

Heart locket size is measured by the longest dimension of the heart shape, usually height or width.

• Small / Dainty (14–18 mm): Subtle and understated. Sits flat against the collarbone. Best for everyday wear and minimalist styling. A good choice for teenagers and younger wearers.
• Medium (19–22 mm): The most versatile size. Large enough to hold a standard passport-photo-sized cut-down image. Works for both casual and dressed-up wear. This is the most commonly gifted size.
• Large / Statement (23–30 mm+): Makes a visible impact. Better for bold styling, layering as the focal piece, or memorial use where fitting two photos or more inside is important.

A practical note: the interior compartment is always smaller than the outer dimension. A 20 mm locket typically holds a photo trimmed to roughly 14–16 mm. Our guide on photo locket necklaces covers how to size and insert photos correctly.

Metals: Which Is Right for Your Heart Locket?

The metal you choose affects both the look and how long your locket will hold up to daily wear.

• Gold-plated over sterling silver: The best value for a warm-toned locket. The sterling silver base means the metal is hypoallergenic and durable; the gold plating (18K PVD at AJLuxe) gives the yellow-gold look without the cost of solid gold. Honest caveat: plating will wear at contact points over time, especially on hinges and clasps.
• Sterling silver (925): Cool, bright tone that complements engraving well because the etched lines show contrast. Tarnishes slowly with air exposure but polishes back easily. A practical, lasting everyday metal.
• Rose gold-plated: Warm blush tone with high current demand. Romantic and modern at the same time. Same durability notes as gold-plated.
• Solid 14K gold: The heirloom choice. No plating to wear through, and the piece can be passed down across generations. Significantly higher cost but fully justified for a memorial or milestone locket that should last decades.

Single vs. Double Compartment: Which Do You Need?

Most heart lockets have a single interior compartment with enough space for one small photo. A double-compartment locket opens to reveal two faces — think of it like a book, with one photo on the left and one on the right.

Choose a single compartment if you want a slimmer profile and a simpler sentiment — one person, one image. Choose a double compartment for couples (each puts in a photo of the other), for parent-child gifts (child on one side, parent on the other), or for memorial use where you want to preserve more than one image. For ideas on what else fits inside, see our article on what to put in a locket.

Heart Locket vs. Heart Pendant: What Is the Difference?

This is one of the most common points of confusion when shopping. A heart pendant necklace is a solid, decorative charm shaped like a heart — it does not open. It may be set with gemstones, textured, or plain, but there is no interior compartment. A heart locket necklace has a hinged mechanism that allows the heart to open and reveal a hollow interior designed to hold something.

If you are buying purely for aesthetic reasons and have no plan to put anything inside, a heart pendant often gives you more design options (stones, cutouts, enamel). If the sentimental function — holding a photo, a lock of hair, a written note — is part of why you are buying it, a heart locket is the correct choice.

Who Wears Heart Locket Necklaces

Heart lockets cross demographic lines more than almost any other jewelry style:

• Romantic partners: A classic Valentine's Day gift. The heart shape makes the intent unmistakable.
• Mothers and daughters: One of the most popular Mother's Day gifts. A mother can wear a locket containing photos of her children; a daughter can receive one with a photo of a parent as a milestone gift.
• Memorial jewelry wearers: Heart lockets are frequently chosen for grief jewelry because they allow the wearer to keep a physical keepsake — a lock of hair, a small folded note, a tiny photo — against the body as a form of continued closeness.
• Vintage and cottagecore aesthetic fans: The Victorian associations of lockets make them a natural fit for romanticized nostalgic dressing.

Best Occasions to Gift a Heart Locket Necklace

• Valentine's Day: The most natural fit. Heart shape plus the ability to put a photo inside makes it far more personal than a generic gift.
• Mother's Day: A locket with children's or grandchildren's photos inside has been a beloved Mother's Day gift for over a century.
• Anniversary: Engrave the date on the back and put an early photo of the couple inside for a gift with lasting sentimental weight.
• Memorial / Sympathy: A grief gift that gives the recipient something to hold onto, literally. Handle with care in terms of messaging — frame it as a way to keep someone close, not as a replacement.
• Graduation: Marks a transition into a new chapter. A parent giving a child a locket with a family photo is a way of saying "take us with you."
• First love / teen milestone: Heart lockets have always been associated with young romance. A small dainty version is appropriate and age-suitable.

What to Engrave on a Heart Locket

The exterior or interior of a locket is a natural canvas for engraving. Ideas that work well:

• Initials (yours, theirs, or combined: "A + J")
• A significant date (anniversary, birthday, "forever" date)
• A short phrase: "Always near," "With love," "Forever yours," "Closer than close"
• Coordinates of a meaningful location (where you met, where you got married)
• A single word: "Mom," "Mine," "Always"

Keep engraving short. The heart face has limited surface area, and cramped lettering reduces legibility and visual elegance. Four words or fewer on the front; a longer message can go on the back where it reads more privately.

Buying Guide: What to Look for in a Heart Locket

Not all lockets are made equally. Here is what to check before you buy:

• Hinge quality: The hinge is the part that fails first on a poorly made locket. It should open and close smoothly with slight resistance — not flopping open or requiring force. A spring-loaded or tight pin hinge is better than a loose barrel hinge.
• Clasp type: The locket should stay closed when worn. Lockets that pop open constantly are frustrating. A small tab-and-notch closure or a tiny magnetic assist keeps contents secure.
• Interior finish: Look for a smooth, clean interior — ideally polished or lined — so a photo sits flat without snagging. A rough or sharp interior edge can damage delicate paper photos.
• Opening size: Check the stated compartment dimensions (not the overall locket size) against the photo you plan to insert. Some lockets look large outside but have a thick bezel that reduces the usable interior.
• Chain length: Standard lengths for lockets are 16–18 inches (collarbone, where a locket usually rests). If you want it to fall lower on the chest, go 20–22 inches.

Explore AJLuxe's full range of personalized jewelry for heart lockets and custom options available to order now.

Frequently Asked Questions

What is a heart locket necklace?

A heart locket necklace is a hinged pendant shaped like a heart that opens to reveal a small hollow interior compartment designed to hold a photo, lock of hair, folded note, or other tiny keepsake. It is worn on a chain as a necklace and is considered one of the most sentimental pieces of jewelry available.

What does a heart locket symbolize?

A heart locket symbolizes love, connection, and the act of keeping someone close. The heart shape represents love or devotion, while the locket function — holding something precious inside — doubles that meaning: the person or memory inside is literally held close to the wearer's heart. Heart lockets are also commonly used as memorial jewelry to maintain a physical connection to someone who has passed.

What size heart locket is best?

A medium heart locket in the 19–22 mm range is the most versatile and best-selling size. It is large enough to hold a standard small photo cut to fit and visible enough to read as a meaningful piece without being overwhelming. Smaller sizes (14–18 mm) suit minimalist wearers and everyday use; larger sizes (23 mm+) suit statement styling or memorial use where more interior space is needed.

Can you engrave a heart locket?

Yes. Most heart lockets — in gold-plated, sterling silver, rose gold-plated, and solid gold — can be engraved on the front face, back face, or both. Common engravings include initials, a date, a short phrase, or coordinates. Keep exterior engraving to four words or fewer for best visual results; longer messages work better on the back where they read more privately.

What is the difference between a heart locket and a heart pendant?

A heart pendant is a solid decorative charm that does not open — it is purely aesthetic. A heart locket has a hinged mechanism that allows it to open and reveals an interior compartment designed to hold a photo or keepsake. If you want to carry something inside the jewelry, you need a locket, not a pendant.

What metals are best for heart lockets?

Gold-plated over sterling silver and plain sterling silver (925) are the best choices for everyday heart lockets — durable, hypoallergenic, and accessible in price. Rose gold-plated is a popular romantic option with the same durability profile. Solid 14K gold is the correct choice for a memorial or heirloom locket that must last decades, since solid gold has no plating layer to wear away.

What do you put in a heart locket?

The most common contents are a small trimmed photo of a loved one, a lock of hair, a tiny folded handwritten note, a pressed flower petal, or a small piece of fabric from a meaningful garment. The interior compartment size varies by locket size, so always check the stated interior dimensions before preparing your keepsake. Our full guide on what to put in a locket covers creative and sentimental options in detail.

Is a heart locket a good gift?

Yes, a heart locket is consistently one of the most well-received jewelry gifts across all demographics and occasions. It works for romantic partners, mothers and daughters, memorial situations, graduations, and milestone birthdays. The combination of a universally understood heart shape and the functional sentimental value of the locket interior gives it an emotional weight that purely decorative jewelry rarely matches. A personalized or engraved version elevates the gift further.