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Unique Engagement Rings

Unique engagement rings built around unusual gemstones, unconventional cuts and distinctive settings — moss agate, salt-and-pepper diamonds, alexandrite and fantasy cuts in nature-inspired, gothic and celestial designs.

Minimalist Kite Cut Green Moss Agate Engagement Ring in 14K Solid Rose Gold by Aquamarise Gold, featuring a delicate kite-shaped moss agate set on a sleek rose gold band.

Minimalist Kite Cut Green Moss Agate Ring

14K Rose Gold Vermeil

Regular price $175 $140 (-20%)

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Kite Green Moss Agate Bezel Engagement Ring Set in 14K Solid Rose Gold by Aquamarise Gold, featuring kite-shaped moss agate and sparkling diamonds in an elegant vintage-inspired design.

Kite Green Moss Agate Bezel Ring Set

14K Rose Gold Vermeil

Regular price $185 $79.99 (-57%)

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Stella Black Moissanite Engagement Ring in 14K White Gold by Aquamarise Gold featuring an oval black moissanite center with marquise and round white accents in a vintage-inspired design.

Stella Black Onyx Engagement Ring

Sterling Silver

Regular price $160 $69.99 (-56%)

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East-West Hexagon London Blue Topaz Ring in Rose Gold Vermeil

East-West Hexagon London Blue Topaz Ring

Rose Gold Vermeil

Regular price $175 $109.99 (-37%)

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Stella Oval Cut Aquamarine Vintage Engagement Ring in 14K White Gold by Aquamarise Gold, featuring an oval aquamarine with marquise and round diamonds in a vintage-inspired setting.

Stella Oval Cut Aquamarine Vintage Engagement Ring

Sterling Silver

Regular price $160 $69.99 (-56%)

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Alexandrite Halo Ring in Sterling Silver

Alexandrite Halo Ring

Sterling Silver

Regular price $170 $99.99 (-41%)

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Iris Oval Aquamarine Engagement Ring in 14K White Gold by Aquamarise Gold, featuring a luminous oval aquamarine center with a sparkling diamond halo and pavé band setting.

Iris Halo Oval Aquamarine Ring

Sterling Silver

Regular price $160 $69.99 (-56%)

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Art Deco Aquamarine Engagement Ring in Sterling Silver by Aquamarise

Art Deco Aquamarine Engagement Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Rose gold ring with a blue gemstone on a white surface

Twisted Vine Alexandrite Ring

14K Rose Gold Vermeil

Regular price $175 $79.99 (-54%)

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Three Stone Halo Vintage Aquamarine Engagement Ring in Sterling Silver by Aquamarise, featuring oval aquamarine stones surrounded by pavé halos on a twisted infinity silver band.

Three Stone Halo Vintage Aquamarine Engagement Ring

Sterling Silver

Regular price $140 $79.99 (-43%)

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Victoria Natural Citrine Ring in 14K White Gold by Aquamarise Gold featuring an oval citrine center surrounded by tapered baguette and round moissanite accents on a polished white gold band.

Victoria Natural Citrine Ring

Sterling Silver

Regular price $105 $69.99 (-33%)

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Everly Oval Cut Ruby Engagement Ring in 14K White Gold featuring a vibrant oval ruby center flanked by two sparkling round diamonds on a polished white gold band by Aquamarise Gold.

Everly Oval Cut Ruby Ring

Sterling Silver

Regular price $160 $89.99 (-44%)

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Valentina Art Deco Alexandrite Ring in 14K White Gold by Aquamarise Gold featuring a color-shifting oval alexandrite surrounded by intricate diamond accents in a vintage-inspired design.

Valentina Vintage Alexandrite Ring

Sterling Silver

Regular price $170 $79.99 (-53%)

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Oval Cut Padparadscha Sapphire Ring in Sterling Silver by Aquamarise featuring a vibrant orange oval sapphire flanked by pear-shaped white accents on a polished sterling silver band.

Oval Cut Padparadscha Sapphire Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Art Deco Alexandrite Ring in 14K Rose Gold Vermeil by Aquamarise featuring a teardrop color-changing gemstone surrounded by small sparkling stones on a detailed rose gold vermeil band.

Art Deco Alexandrite Ring

14K Rose Gold Vermeil

Regular price $175 $99.99 (-43%)

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Iris Oval Emerald Engagement Ring in 14K White Gold by Aquamarise Gold featuring a vivid green oval emerald surrounded by sparkling diamond accents on a delicate white gold band.

Iris Halo Oval Emerald Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Princess Cut Alexandrite Engagement Ring in 14K Solid Rose Gold by Aquamarise Gold, featuring a vibrant princess-cut alexandrite with diamond accents on a polished rose gold band.

Princess Cut Alexandrite Engagement Ring

14K Rose Gold Vermeil

Regular price $175 $79.99 (-54%)

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Kite Cut Alexandrite Bezel Engagement Ring Set in Sterling Silver by Aquamarise featuring a vibrant kite-shaped Alexandrite with shifting hues and a diamond-accented sterling silver band.

Kite Cut Alexandrite Bezel Engagement Ring Set

Sterling Silver

Regular price $195 $119.99 (-38%)

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Adeline Marquise Cut Flower Aquamarine Engagement Ring in 14K White Gold featuring a marquise aquamarine center surrounded by delicate diamond accents by Aquamarise Gold.

Adeline Marquise Cut Flower Aquamarine Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Lunette Vivid Pink Sapphire Ring Set in 14K White Gold by Aquamarise Gold featuring a teardrop pink sapphire surrounded by sparkling diamonds in a unique, fantasy-inspired design.

Lunette Pink Sapphire Ring Set

Sterling Silver

Regular price $175 $79.99 (-54%)

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Belle Cushion Cut Natural Morganite Engagement Ring in 14K White Gold by Aquamarise Gold, featuring a pink cushion-cut morganite surrounded by sparkling diamonds on a white gold band.

Belle Cushion Cut Blush Pink Morganite Ring

Sterling Silver

Regular price $160 $69.99 (-56%)

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Belle Cushion Cut Natural Amethyst Ring in Sterling Silver by Aquamarise featuring a vibrant cushion-cut amethyst surrounded by sparkling simulated diamonds in a delicate sterling silver setting.

Belle Cushion Cut Natural Amethyst Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Ava Emerald Cut Morganite Ring in 14K Rose Gold Vermeil

Ava Emerald Cut Morganite Ring

14K Rose Gold Vermeil

Regular price $175 $150 (-14%)

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per 

Belle Cushion Cut Aquamarine Ring in Sterling Silver by Aquamarise featuring a 2.5 carat cushion-cut aquamarine with diamond halo and sterling silver band from March Birthstone Jewelry collections.

Belle Cushion Cut Aquamarine Ring

Sterling Silver

Regular price $160 $135 (-16%)

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Art Deco Teal Sapphire Engagement Ring in Sterling Silver by Aquamarise, featuring a square teal sapphire center with tapered baguette white gemstones on a polished silver band.
New

Art Deco Teal Sapphire Engagement Ring

Sterling Silver

Regular price $160 $128 (-20%)

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Diamond ring with a purple gemstone on a white surface with a blurred purple background

Oval Cut Gray Moissanite Ring

Sterling Silver

Regular price $205 $175 (-15%)

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per 

Silver ring with a green gemstone and smaller blue stones on a white background

Arwen Moss Agate & Moonstone Ring

Sterling Silver

Regular price $160 $79.99 (-50%)

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Elegant ring with a red gemstone and pearls on a soft purple background

Arwen Marquise Cut Red Garnet & Pearl Ring

Black Ruthenium

Regular price $160 $135 (-16%)

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Oval Cut Alexandrite Engagement Ring in Sterling Silver by Aquamarise, featuring a color-shifting teal to violet oval alexandrite center stone, accented with pear-shaped clear gemstones on a polished sterling silver band, perfect for Sterling Silver Rings, June Birthstone Jewelry, Engagement Rings for Women, and Unique Engagement Rings collections.

Oval Cut Alexandrite Engagement Ring

Sterling Silver

Regular price $170 $145 (-15%)

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per 

Ella Alexandrite Engagement Ring in 14K Solid Rose Gold by Aquamarise Gold features a dazzling round alexandrite center stone surrounded by a halo of sparkling diamonds on a finely detailed rose gold band, part of Solid Gold Engagement Rings and June Birthstone Jewelry collections.

Ella Purple Sapphire Ring

14K Rose Gold Vermeil

Regular price $175 $79.99 (-54%)

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Natural Tanzanite Chevron Ring Set in 14K White Gold (two-piece) by Aquamarise Gold featuring a marquise-cut violet-blue tanzanite gemstone framed by a chevron-shaped band adorned with sparkling white diamonds, part of Solid Gold Engagement Rings and December Birthstone collections.

Marquise Tanzanite Ring Set

Sterling Silver

Regular price $175 $150 (-14%)

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per 

Feyra Natural Amethyst & Diamond Ring in Sterling Silver by Aquamarise, close-up of the amethyst accents

Feyra Amethyst & Moissanite Engagement Ring Set

14K White Gold

from $2,495

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per 

Evelyn Starry Night Engagement Ring Set in 14K White Gold by Aquamarise Gold, featuring a pear-shaped deep blue gemstone and sparkling white diamond accents in a celestial-inspired design.

Evelyn Starry Night® Engagement Ring Set

14K White Gold

from $2,195

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per 

Skye Kite® Starry Night Engagement Ring Set in 14K White Gold by Aquamarise Gold, featuring a deep blue kite-cut stone with sparkling diamond accents from the Starry Night™ Rings collection.
Bestseller

Skye Kite® Starry Night® Engagement Ring Set

14K White Gold

from $2,195

Unit price
per 

Skye Kite® Lab-Grown Emerald Engagement Ring Set in 14K Solid Rose Gold by Aquamarise Gold, featuring a striking kite-cut emerald surrounded by smaller emeralds and diamonds in rose gold.

Skye Kite® Lab-Grown Emerald Engagement Ring Set

14K Solid Rose Gold

from $2,195

Unit price
per 

Moss Agate & Opalescent Sapphire Leaf Ring by Aquamarise

Moss Agate & Opalescent Sapphire Engagement Ring

14K White Gold

from $1,885

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Unique engagement rings start from a simple refusal: the ring should not look like the one in every mall showcase. Aquamarise® has built its entire catalog on that refusal — moss agate landscapes, salt-and-pepper diamonds, color-changing alexandrite and fantasy cuts set into nature-inspired, gothic and celestial designs, hand-finished in genuine 925 sterling silver (a 92.5% solid silver alloy), 14K gold vermeil and made-to-order solid gold.

What Actually Makes an Engagement Ring Unique

Three levers, usually pulled together. The stone: minerals with natural, non-repeating patterns mean no two rings can ever match. The cut: kite, hexagon, coffin and fantasy facet plans break from the round-brilliant default that dominates of every engagement rings sold. And the setting: branches, leaves, stars and antique lacework turn the mount itself into the statement rather than a frame that disappears. A ring only needs one of the three to stand out — the designs in this collection usually carry two or three at once, which is why they read as one-of-a-kind from across a room.

Entwined green moss agate ring in sterling silver by Aquamarise

Stones With Patterns That Never Repeat

Some minerals are physically incapable of sameness. Moss agate suspends green dendritic inclusions in translucent chalcedony, so every stone carries its own miniature forest — the reason moss agate engagement rings became the signature of the whole unusual-ring movement. Salt-and-pepper diamonds invert the clarity rules: their black and white inclusions are the point, a starfield sealed in carbon. Rutilated quartz threads golden needles through clear crystal, and opal rearranges its play-of-color with every degree the hand turns.

Then there are stones unique in behavior rather than pattern. Lab-created alexandrite reads teal in daylight and shifts toward purple-red under warm evening light — two rings in one, and the most conversation-starting stone we set; see the full alexandrite engagement rings range. If the goal is a ring nobody else can duplicate, begin with the material itself: choose a stone where nature, not a cutting factory, decides the design.

Unusual Cuts, from Kite to the Fantasy Facet Families

Cut is the fastest route to an unusual silhouette, because shape reads across a room before color does. Kite cut engagement rings angle four sharp sides into a geometric point that elongates the finger; hexagons bring honeycomb symmetry; coffin cuts anchor the gothic end of the spectrum; and fireworks fantasy cuts abandon standard facet charts entirely, carving curved grooves that scatter light in sprays no brilliant cut can produce. These cuts are rare in mass retail for a practical reason — they waste more rough stone and demand more skilled cutting — which is precisely why they look one-of-a-kind on the hand.

A practical note on wear: pointed cuts like the kite deserve settings with protected tips, and geometric step-style cuts show their clarity honestly. Every listing in this collection names its stone, cut and setting approach plainly, so you can judge the trade-offs before you buy rather than after.

Fireworks Cut Morganite & Moonstone Leaf Couples Ring Set by Aquamarise, featuring a sparkling pink morganite and moonstone with delicate leaf-inspired sterling silver bands.

Settings That Do the Talking

An unusual stone deserves a mount designed around it, not a generic four-prong head ordered from a parts catalog. Across this collection you will find branch and vine shanks that grow around the finger, leaf-cradled bezels that frame moss agate the way undergrowth frames a clearing, star-set shoulders and crescent profiles on the celestial designs, and blackened, sculptural silhouettes on the gothic side. Milgrain edges and hand-applied beadwork borrow from antique lacework where a vintage mood is wanted.

Details finish the job. Hidden accent stones under the gallery reward the wearer rather than the audience; asymmetric clusters let a couple design a ring that leans to one side on purpose; and complimentary engraving puts a private line of text inside the band. The result stays unique at every distance — silhouette from across the room, setting work at arm's length, and an inscription only two people know about.

Unique, Alternative or Non-Traditional: Choosing Your Lane

The terms overlap, but they lean differently, and we keep a dedicated page for each. Unique is about one-of-a-kind design — this page. Alternative engagement rings lean into replacing the diamond-solitaire convention altogether, non-traditional engagement rings collect the designs that ignore bridal convention entirely, and nature-inspired engagement rings gather every botanical and woodland design in one place. If one of those phrases sounds more like you, that page is the faster route to the right ring.

From One-of-a-Kind to Made-for-You

If the deciding factor is a stone's color rather than the rarity of its pattern, start at our gemstone engagement rings hub, which routes you to the right stone-specific collection. And when no listed ring is quite it, the custom ring builder turns a stone, a metal and an idea into a finished design. We hold a 4.9-star average across 38,000+ reviews collected on our store and on Etsy, where we have sold since 2016.

From the Blog

Fairy Engagement Rings: The Complete Guide to Fairycore Styles

Fairy Engagement Rings: The Complete Guide to Fairycore Styles

A complete guide to fairy engagement rings — fairycore, fae, woodland and elvish designs, the dreamiest stones and settings, durability, and how to design your own magical ring.

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Moss Agate Engagement Rings: The Complete Buyer's Guide

Moss Agate Engagement Rings: The Complete Buyer's Guide

A complete guide to moss agate engagement rings: what moss agate is, its meaning, durability, price, the best cuts and settings, and how to choose your one-of-a-kind stone.

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What Is a Salt and Pepper Diamond? The Complete Guide

What Is a Salt and Pepper Diamond? The Complete Guide

A real diamond that celebrates its flaws. What a salt and pepper diamond is, what causes its speckled look, how durable it is, the best cuts, why it costs less,...

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Green Engagement Rings: The Complete Guide to Every Green Gemstone

Green Engagement Rings: The Complete Guide to Every Green Gemstone

A complete guide to green engagement rings: every green gemstone explained with real Mohs hardness, honest per-carat pricing, and daily-wear durability, plus a comparison table and how to choose the...

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