Zircon Heart Birthstone December Necklace in 14K Yellow Gold, 15 Inch
Chain length guide

Product information
- Metal14K Yellow goldPolished
- StoneSwiss Blue Topaz3 mm round
- Size18 inChain length
- Weight0.44 gTotal item weight
Description
14K Madi K 3mm Blue Zircon Heart Birthstone Necklace – December's Sparkling Treasure
Discover a delicate combination of elegance, sentimentality, and radiant beauty with the 14K Madi K 3mm Blue Zircon Heart Birthstone Necklace . Expertly crafted in lustrous 14K yellow gold, this charming necklace features a heart-shaped blue zircon gemstone—a cherished birthstone for December. With its captivating deep blue hue symbolizing prosperity, wisdom, and protection, it's more than just jewelry—it’s a meaningful statement of love and individuality.
Key Features
- Crafted in 14K yellow gold with a polished finish
- Set with swiss blue topaz
- Rope necklace design
- Measures 15 inches long
- Secured by a spring ring clasp
- Approximate weight of 0.44 grams
- Stone treatment: irradiated
Product details14K yellow gold · Swiss Blue Topaz · 0.44 g
Metal
- Metal
- Yellow gold
- Purity
- 14K
- Finish
- Polished
- Construction
- Solid
- Made by
- Die Struck
Center stone
- Stone
- Swiss Blue Topaz
- Origin
- Natural
- Shape
- Round
- Size
- 3 mm
- Carat weight
- 0.11 ct
- Color
- Blue
- Number of stones
- 1
- Cut
- Faceted
- Quality
- AA
- Treatment
- Irradiation
Measurements
- Pendant length
- 10 mm
- Pendant width
- 6 mm
- Chain length
- 18 in
- Chain width
- 0.5 mm
- Clasp
- Spring Ring
- Weight
- 0.44 g
Style & design
- Necklace type
- Necklace with Pendants
- Chain style
- Rope
- Style
- Romantic
More
- Brand
- Madi K
- Made in
- United States
- Birthstone
- December
- Item #
- SJQG-GK414-15
Our standards
- Stamped with its metal type (e.g. 14K, 925)
- Colored gemstones are ethically sourced
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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Necklaces & Chains, answered
Straight answers about necklaces & chains. See all Necklaces & Chains
- Free Shipping
- US Orders $99+
- Exchanges
- 30 Days
How do I choose between curb, Figaro, rope and box chains?
Pick by look: curb is bold, box is smooth, rope is textured. Curb links lie flat and read casual. Figaro adds a longer link between short ones. Rope and cable chains catch light, and box chains suit a pendant. Franco and Spiga offer other textures.
What affects the price of necklaces and chains?
Metal, width, length and stones set the price. Karat matters (10K, 14K), as does solid versus gold-filled, and sterling silver, stainless steel and titanium sit differently. Thicker, longer chains use more metal, and diamonds or pearls add to the cost. Use the Price filter on this page to set a budget.
Which necklace and chain styles are most popular?
Stainless steel fleur-de-lis necklaces and orchid necklaces lead the list. Close behind are curb chains in titanium, sterling silver Forzantine and ball chains, and cross necklaces. Gold cable, Figaro and Franco chains also show up among the favorites.
What chain width should I choose?
Choose fine widths for pendants and wider ones for wearing alone. Chains around 0.5mm to 1.5mm suit a pendant or layering. Widths from 3.5mm to 10mm, as in the titanium curb chains, make a statement on their own. Each listing gives the width in millimeters.
What length necklace should I wear?
16 to 18 inches sits at the collarbone, and 20 to 24 falls lower. Many chains here come in a range of lengths, so you can pick one on the listing. Longer lengths suit open collars and layering, while shorter ones sit neatly with a pendant.
Can I wear a chain every day?
Yes, choose a metal that suits daily wear. Stainless steel and titanium are common here for everyday pieces, as are sterling silver and 14K gold. Take it off for swimming and heavy workouts to protect the links. See our jewelry care tips.
How do I layer necklaces without tangling?
Vary the lengths by about two inches and the chain textures. Pair a fine chain with a slightly bolder link, and add a pendant to only one layer. Fine chains gathered in The Layering Edit are made to be worn together. Fasten the clasps separately.
How should I store a necklace so it doesn't tangle?
Store each necklace separately and fastened. Hang it or lay it flat in a soft pouch or lined box. Keep sterling silver away from air and moisture to slow tarnish, and wipe any chain with a soft cloth after wearing.