Introducing the stunning 18K Solid Gold Triangle Cut Diamond Solitaire Necklace, a captivating piece that combines modern design with timeless elegance.
 
Crafted from  18K Solid Gold, this necklace is available in white, rose, or yellow gold, allowing you to choose the perfect finish to match your personal style.
 
The centerpiece features a striking triangle cut diamond, measuring 3.5mm, which adds a unique twist to the classic solitaire design. With a total carat weight of 0.15 ct, this diamond exhibits G color and SI1 clarity, ensuring a brilliant sparkle that captures the light beautifully.
 
Set in a delicate micro prong setting, the diamond is securely held while allowing maximum exposure to light, enhancing its overall brilliance. Perfect for everyday wear or special occasions, this necklace is a versatile addition to any jewelry collection.
 
With BIS Hallmarked certification, you can trust in the quality and authenticity of this exquisite piece. Elevate your look with this elegant triangle cut diamond solitaire necklace, a true expression of sophistication and style.
 
Product Details :
 
Metal: 18K Solid Gold (Available in White, Rose, and Yellow Gold)
Diamond Details:
Triangle Diamond: 1 pc (3.5mm)
Total Carat Weight (CTW): 0.15 ct
Diamond Color & Clarity: G Color, SI1 Clarity
Setting Type: Micro Prong
Certifications: GIA & BIS Hallmarked
Shipping Time: 15-25 Business Days
Customer Support: Available via live chat and video calls.

Frequently Asked Questions
Is this necklace durable enough for everyday wear?
Yes. Diamond rates 10 on the Mohs hardness scale, and set in solid gold, this necklace holds up well to daily wear.
What's the price range for this solitaire diamond necklace across different gold karats?
At The Karat Store, this solitaire diamond necklace starts at $1,096.68 in 10K gold, $1,237.28 in 14K gold, and $1,406 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.
Can this necklace be layered with other necklaces?
Yes. This piece works well as part of a layered look — pair it with a slightly shorter or longer chain in a different style for contrast, or wear it alone for a cleaner, minimalist look.
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: Chain necklace