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Kay
Kay Diamond Necklace 5/8 ct tw Round-cut Sterling Silver 18"
−60%

Jewelry · Kay Outlet

Round diamonds on a silver chain, ready for every neckline

Kay Diamond Necklace 5/8 ct tw Round-cut Sterling Silver 18"

A Kay diamond necklace with round-cut stones in sterling silver on an 18-inch chain — an easy everyday sparkle piece.

Deal score 8.7 · Steal
$399.99$999.99 Kay Outlet's regular price

You save $600.00 at Kay Outlet

Checking it's still available…

Why it's a great deal

  • Kay Outlet lists its regular price at $999.99: 60% off by its own figures
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Every store we checked

  • Kay OutletNew

    In stock

    $399.99Observed at 4:02 PM
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Price history and every store's price →

From Kay Outlet

  • Openwork pendant set with shimmering round diamonds
  • Classic sterling silver styling
  • Total diamond weight of 5/8 carat
  • Pendant hangs from an 18-inch cable chain
  • Secures with a lobster clasp
  • Lifetime Diamond Commitment
Materials
Sterling silver; natural round white diamonds (color I, clarity I3); electroplated with rhodium or finished with an e-coating
Care
Rhodium or e-coating finishes may wear off with frequent use; ask a jewelry consultant for details
Guarantee
Lifetime Diamond Commitment
Returns
Return within 30 days of purchase or exchange within 60 days; exchanges must be done at a store; online purchases can be returned to any store or by mail to the
Shipping
Ship to you, to your store, or to a UPS Access Point near you; free shipping offer may be modified or terminated at any time without notice

Specs

Stone Shape
Round
Stone Color
White
Stone Type
Diamond
Stone Setting
Shared Prongs
Width
18.5
Length
18

About the Kay Diamond Necklace 5/8 ct tw Round-cut Sterling Silver 18"

The Kay Diamond Necklace is an 18-inch sterling silver chain set with round white diamonds totaling 5/8 carat, held in a shared-prong setting. The shared prongs place the stones close together so the line reads as an almost continuous row of sparkle rather than separate pendants. At $399.99 at Kay Outlet as of November 3, 2026, it is the only new price listed, so there is no lower new price to compare against right now.

Best forGift for an anniversary or birthdayShoppers who want a diamond look without a pendantEveryday wear in sterling silverSomeone who prefers a fixed 18-inch length
Pros
  • 5/8 ct tw of round diamonds is a substantial total weight for the price
  • Shared-prong setting keeps the stones tight and the line clean
  • Sterling silver keeps the cost well below white gold or platinum
  • 18-inch length sits at the collarbone and suits most necklines
  • Round cuts give strong sparkle in a simple design
Cons
  • Sterling silver tarnishes and needs regular polishing
  • Shared prongs expose stone edges and can snag on knits
  • No clasp or length adjustment details are listed, so fit is fixed
  • Diamond color and clarity grades are not stated
  • Only one new price is listed, so there is no competitive benchmark

    • Questions and answers

    Is 5/8 carat big enough to notice?
    Yes. Spread across an 18-inch line, 5/8 ct tw gives visible sparkle at conversation distance without looking heavy. It reads as a delicate diamond line, not a statement piece.
    Will sterling silver hold up for daily wear?
    Sterling silver is durable but tarnishes with air, sweat and perfume. Store it in a closed pouch and polish it regularly; avoid wearing it in chlorinated water or while cleaning.
    Can I wear it every day?
    It is light enough for daily wear, but the shared prongs can catch on sweaters and scarves. Check the prongs periodically and take it off for rough activity.
    Is it a good gift?
    It suits anniversaries, birthdays and graduations, and the classic line style fits most tastes. Confirm the recipient's chain length preference, since 18 inches is fixed.
    How does it compare with a diamond pendant?
    A line necklace spreads the carat weight across many stones, so it sparkles along the whole chain. A pendant concentrates the weight in one stone, which usually looks larger but covers less of the neckline.
    When is the best time to buy?
    Jewelry promotions cluster around Valentine's Day, Mother's Day, Black Friday and the winter holidays. With only one new price listed at $399.99 as of November 3, 2026, watch for a holiday markdown before buying.