Round Swiss Blue Topaz & Diamond Necklace in Sterling Silver (0.18 ct. tw.), 18 Inch
Chain length guide

Product information
- Metal925 White sterling silverAntiqued
- StoneSwiss Blue Topaz10 mm round
- Size18 inChain length
- Weight5.73 gTotal item weight
Description
Vivid blue Swiss Blue Topaz anchors this round Swiss Blue Topaz and diamond necklace in sterling silver, a pendant with a deep, cool color. The sterling silver carries an antiqued finish that darkens the recesses and gives the piece a vintage character. The round stone sits in a bezel, ringed by small natural diamonds that add fine points of light, and the pendant hangs from the chain with a lobster clasp closing it securely. Wear it with a crisp white shirt or a dark knit that lets the blue stand out. It is a fitting gift for a December birthday.
Key Features
- Crafted in 925 sterling silver with an antiqued finish
- Set with swiss blue topaz
- Measures 18 inches long
- Secured by a lobster clasp
- Approximate weight of 5.73 grams
Why You’ll Love It
- A rich blue stone that adds color to neutral outfits.
- Antiqued detail gives it a lived-in, vintage feel.
- Small diamonds add a quiet sparkle around the blue center.
- Easy to wear from workdays to dinners out.
Perfect For
Suited to birthdays, Christmas, Valentine's Day, anniversaries, graduation and everyday wear. A thoughtful gift for mothers, grandparents, December babies, or anyone who loves blue stones and vintage style.
Product details925 white sterling silver · Swiss Blue Topaz · 5.73 g
Metal
- Metal
- White sterling silver
- Purity
- 925
- Finish
- Antiqued
- Construction
- Solid
- Made by
- Cast
- Accent material
- 14K Gold
- Accent color
- Yellow
Center stone
- Stone
- Swiss Blue Topaz
- Origin
- Natural
- Shape
- Round
- Size
- 10 mm
- Carat weight
- 4.05 ct
- Color
- Blue
- Number of stones
- 1
- Total gem weight
- 4.05 ct. tw.
Accent stones
- Stone
- Diamond
- Shape
- Round
- Number of stones
- 36
- Total weight
- 0.18 ct
Measurements
- Pendant width
- 16 mm
- Chain length
- 18 in
- Clasp
- Lobster
- Total carat weight
- 0.18 ct. tw.
- Weight
- 5.73 g
Style & design
- Necklace type
- Necklace with Pendants
- Style
- Vintage
More
- Made in
- Thailand
- Birthstone
- December
- Item #
- SJQG-QTC52
Our standards
- Stamped with its metal type (e.g. 14K, 925)
- Diamonds are conflict-free
- 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 a luxury jewelry gift box
- Your necklace
- A luxury 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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Swiss Blue Topaz Necklaces, answered
Straight answers about swiss blue topaz necklaces. See all Swiss Blue Topaz Necklaces
- Free Shipping
- US Orders $99+
- Exchanges
- 30 Days
Are Swiss blue topaz necklaces real or treated?
Swiss blue topaz is a real gemstone, but the color is treated. Natural blue topaz is pale, so most blue topaz on the market is colorless topaz that has been irradiated and heated to reach its blue. This is the standard, stable process for the stone. The page does not state whether these stones are natural or lab-created.
Which Swiss blue topaz necklace styles are most popular?
Simple single-stone styles lead the list. Light antiqued, teardrop and round Swiss blue topaz necklaces in sterling silver come first, followed by a round cross and peridot pairings. Emerald-cut, cushion and heart styles also appear near the top.
How do I choose between a round, teardrop and cushion stone?
Pick by how much presence you want. A round stone is the most understated for daily wear. A teardrop adds a longer line toward the collarbone, while a larger bezel-set cushion shows the most blue. Browse Swiss blue topaz pendants to compare more shapes.
How do I care for a Swiss blue topaz necklace in sterling silver?
Wipe it gently and store it dry. Topaz is hard, but sterling silver can tarnish, so use a soft cloth and keep the necklace apart from other jewelry. Avoid harsh cleaners. Antiqued finishes are best polished lightly so the darker detail stays. See our jewelry care page.