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Deal.ai › Rings
Rocksbox
Rocksbox The Mariel Lab-Grown Diamond Open Ring

Rocksbox The Mariel Lab-Grown Diamond Open Ring

Best price now

$99.00at Kay JewelersChecked 1 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $99.00 at Kay Jewelers (checked Nov 11, 2026).
  • Checked at 2 stores.

Our take on the Rocksbox The Mariel Lab-Grown Diamond Open Ring

The Mariel is an open-shank ring from Rocksbox set with a single 0.05-carat lab-grown diamond. The gap in the band lets it sit flush against other rings or adjust slightly to different fingers, which makes it a natural stacking piece. The diamond is small, so it reads as a subtle sparkle rather than a statement stone. Compared with solid-band diamond rings, it offers a modern silhouette and a lab-grown stone at a modest carat weight, but the thin open design is less suited to heavy daily wear.

Best forStacking with other ringsA subtle everyday sparkleGifts for a modern, minimal lookShoppers who prefer lab-grown stones
Pros
  • Open band stacks flush with other rings
  • Single lab-grown diamond keeps the look clean
  • Available in sizes 5 to 8
  • Comes in sterling silver and gold finishes
  • Slim, modern silhouette
Cons
  • 0.05 carat is a very small stone
  • Open shank can catch on clothing and bend
  • Sterling silver version tarnishes without care
  • Sizing is limited and the gap fit is not for everyone

Rocksbox The Mariel Lab-Grown Diamond Open Ring prices at every store

  • Kay JewelersNew

    In stock

    $99.00Checked 1 h ago
    Visit Kay Jewelers
  • Kay JewelersNew

    In stock

    $103.60Free shippingChecked 1 h ago
    Visit Kay Jewelers

Store links may earn us a commission. Some prices via Klarna.

Rocksbox The Mariel Lab-Grown Diamond Open Ring price history

$103.60$89.60
Nov 6Nov 11

Lowest price we've seen: $89.60 on Nov 11 at Kay Jewelers; highest $103.60 on Nov 6. Tracked across 2 stores since Nov 6.

Specifications

Silhouette
Stackable
Size
5, 6, 7, 8
Material
Gold, Silver, Diamond, Sterling Silver
Color
Sterling Silver, Gold
Gemstone Type
Lab-created
Diamond Weight
0.05 carat
Karat
24kSource
No. of Stones (pcs)
1Source
Stone
DiamondSource

Questions and answers

Is the diamond real?
It is a lab-grown diamond, chemically the same as a mined one. It weighs 0.05 carat, so expect a small, subtle sparkle.
Can I resize the Mariel ring?
The open shank gives a little flex, but it is not a substitute for proper resizing. Order your usual size; a jeweler may be able to adjust the gap slightly.
Will the open band bend or catch?
The gap is the ring's weak point. Thin open bands can snag on knitwear and bend if pressed hard, so treat it gently.
Does the sterling silver version tarnish?
Yes, sterling silver darkens over time. Store it dry and polish it regularly; the gold finish needs less upkeep.
Can I stack it with other rings?
Yes, that is the point of the open design. It sits flush beside a plain band or another thin ring without a gap.
What comes in the box?
The ring arrives in Rocksbox packaging. Check the listing for whether a polishing cloth or pouch is included.
Where is the Rocksbox The Mariel Lab-Grown Diamond Open Ring cheapest?
At Kay Jewelers, for $99.00, as of our latest check.

Stores we've priced the Rocksbox The Mariel Lab-Grown Diamond Open Ring at

  • Kay Jewelers deals and prices

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