Elevate your elegance with the 18K Solid Gold Marquise Diamond Cluster Necklace, a stunning piece that seamlessly combines sophistication with modern design.
 
Crafted from  18K Solid Gold, this necklace is available in white, rose, or yellow gold, allowing you to select the perfect finish to match your style.
 
The centerpiece features a beautiful cluster of diamonds, with a diameter of 5.75mm, showcasing a single round diamond (1.2mm) surrounded by three marquise diamonds (4 x 2 mm each).
 
With a total carat weight of 0.16 ct, these diamonds exhibit a G color and SI clarity, ensuring a brilliant sparkle that captures the light beautifully. The prong setting allows for maximum exposure to light, enhancing the overall brilliance of the necklace.
 
With BIS Hallmarked certification GIA Certified & BIS Hallmarkedcasual and formal occasions, the Marquise Diamond Cluster Necklace is a timeless accessory that adds a touch of luxury to any outfit.
 
Product Details
Product Name: 18K Marquise Diamond Cluster Necklace
Metal: 18K Solid Gold (Available in White, Rose, and Yellow Gold)
Diameter: 5.75mm
Diamond Details:
Round Diamond: 1 pc (1.2mm)
Marquise Diamonds: 3 pcs (4 x 2 mm each)
Total Carat Weight (CTW): 0.16 ct
Diamond Color & Clarity: G Color, SI Clarity
Setting Type: Prong
Certifications: GIA Certified & BIS Hallmarked
Shipping Time: 4 business days to make and dispatch, plus about 4 business days in transit (around 8 business days total)und 8 business days total)
Customer Support: Available via live chat and video calls

Frequently Asked Questions
Is a diamond necklace a good gift?
Yes. Diamond necklaces are a popular gift for birthdays, anniversaries, and holidays — a meaningful step up from costume jewelry, and diamond set in solid gold holds its value and appearance far longer than plated pieces.
What's the price range for this diamond necklace across different gold karats?
At The Karat Store, this diamond necklace starts at $1,511.64 in 10K gold, $1,705.44 in 14K gold, and $1,938 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 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 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.
Material: Solid 10K, 14K & 18K gold set with diamonds
Available Metal Colours: Yellow Gold, White Gold, Rose Gold
Available Metal Karats: 10K, 14K, 18K
Available Chain Lengths: 14", 16", 18", 20", 22", 24"
Necklace Style: Pendant necklace
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