Shown in 1.0 carat Aquamarine
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin
Shown in 1.0 carat Aquamarine* The Allison Round Aquamarine Engagement Ring | Lisa Robin

The Allison Solitaire Aquamarine Engagement Ring

The Allison is a solitaire designed to let color do the work of ornament. Where most colored gemstone settings add accents around the center, the Allison subtracts them — the band tapers inward toward the prongs, and nothing else competes with the aquamarine.
$ 2,095.00
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How does the Allison differ from a typical aquamarine engagement ring?

The Allison is an aquamarine solitaire engagement ring designed by subtraction. The tapered band narrows toward four rounded prongs that hold the aquamarine clean above the metalwork, with no halos or accent stones competing for attention.

Why does the Allison taper the band toward the setting?

The Allison's band tapers from full width at the back down to a narrower point at the prongs. This draws your eye inward toward the aquamarine and keeps proportions delicate so the center stone reads larger by contrast.

How do I choose between a solitaire and a side stone aquamarine engagement ring?

A solitaire aquamarine engagement ring lets the color carry the entire design without accent stones, while a halo or side stone setting frames the center with diamonds. Deeply saturated aquamarines hold their own as solitaires; paler stones benefit from the brilliance of accents.

Our guided approach to customizing each ring with intention and clarity.

Every Lisa Robin ring is made to order, which means your design can be thoughtfully refined—even when ordering online. Whether you’re adjusting a detail or evolving the design, we guide you through each decision to ensure the final piece feels cohesive and entirely yours.

Design Refinements can be explored after your initial order, with any pricing adjustments clearly outlined and approved before crafting begins.

Refinement options include but are not limited to:

  • Adjusting the width or taper of the band (shank)
  • Modifying or adding side diamonds for additional detail or presence
  • Changing the prong style (claw, round, double prong, etc.)
  • Adjusting the number of prongs for both aesthetic and structure
  • Refining the basket design for a different profile or overall look
  • Selecting your preferred metal type and color
  • Adapting the design to better coordinate with a wedding ring
Made to order — Your diamond engagement ring ships in 3-4 weeks, approximately Jun 30 to Jul 04
Shipping costs calculated at checkout

Subtraction as a Design Choice

Subtraction is a design choice. The Allison works by what isn't there.

The aquamarine at the center carries the rest of the design's color responsibility. Aquamarines come in a remarkable range — pale ice through sky to deep sea blue, with the rarer Santa Maria deep blue and Espirito Santo bluish-green at the saturated end. A colored gemstone engagement ring with an aquamarine center is as much about which aquamarine as about which setting: a pale ice reads delicate against white gold, a Santa Maria blue holds its own against yellow gold, a sea blue warms against rose. Aquamarine is softer than sapphire (7.5-8 Mohs), which makes the protective setting style here important — bezels and halos protect the stone from everyday wear. Most couples come to an aquamarine engagement ring expecting one color and leave open to the range.

On the hand, the Allison reads as architecture in service of color — the tapered line concentrates attention on the center aquamarine, and the absence of ornament keeps the eye from wandering. The Allison joins a Lisa Robin tradition of solitaire engagement rings designed for couples who choose by hue, not by halo.

The Allison Solitaire Aquamarine Engagement Ring
The Allison Solitaire Aquamarine Engagement Ring

How Lisa Robin Designs Your Gemstone Engagement Ring

From gemstone selection to CAD approval, every decision is guided by Lisa personally.

Online Ordering
Begin your custom gemstone engagement ring through a guided online experience designed to bring clarity to each decision. From understanding gemstone options to exploring engagement ring settings, the process is supported by in-depth educational resources throughout the site.

If you'd like to personalize your design, you can place your order at any time — we'll follow up to refine the details and ensure everything aligns with your preferences.

Private Design Appointments
For a more collaborative experience, work with us one-on-one, either in person or virtually. Your engagement ring consultation is tailored to you — we guide you through each decision in real time, shaping your gemstone engagement ring with clarity and intention.

Browse available certified gemstones sourced from trusted suppliers through the Lisa Robin gemstone collection.

As you explore your engagement ring, you can review gemstones by variety, color, and overall presence to select the one that best complements your design.

We guide you through how each gemstone interacts with your setting — so the final ring feels balanced, intentional, and cohesive.

Certified natural gemstones are available through the online selection. Lab created gemstones can be made available by appointment — contact us to discuss your options.

Before your ring is hand-crafted, you’ll review detailed CAD renderings created using your diamond’s exact dimensions.

Multiple views allow proportions, balance, and design details to be carefully considered—so you can feel confident in how your engagement ring design will come together before crafting begins.

If a wedding ring is selected within the same order, renderings will also show each ring individually and together, helping you understand how they pair and flow as a set.

Once your design is approved, your ring is hand-crafted specifically for you using carefully selected materials and an ethically sourced gemstone.

Each ring is a made to order engagement ring, typically completed in approximately 3-4 weeks.

You can choose secure, fully insured shipping or private studio pickup. Throughout the process, we remain available to guide you — so you always know what to expect at every stage.

What our customers say about their Lisa Robin Gemstone Engagement Rings

I loved working with Lisa Robin! It was so easy to create exactly what I wanted. With some minor changes to Lisa's gorgeous styles, I had the perfect wedding ring to coordinate with my Lisa Robin Engagement Ring. Can’t wait to add another ring to my stack.

Abby and Zane
Blountville, Tennessee

Our experience with Lisa Robin was delightful. We found our Lisa Robin engagement ring Instagram and then picked out and bought our wedding rings online. Every question we had was answered quickly. Lisa made us feel special and guided us in the right direction. When we got our rings, they were just what we wanted, expressing our style and love perfectly. We are so happy with how everything turned out.

Mary Katherine and Adam
Columbus, Ohio

Find Your Matching Wedding Band

From the bottom the stack is styles with the Jamie gold band, the Allison engagement ring, and the Kendall to cap it off.

Diamond Wrap Ring - Lisa Robin
Double Row Open Ring - Lisa Robin

Aquamarine Engagement Rings FAQ

With some care, yes. Aquamarine is a 7.5-8 on the Mohs hardness scale — softer than diamond or sapphire but harder than glass — which means it suits everyday wear when set protectively. The bezels, halos, and side accents in this collection shield the corners and crown of a softer stone from daily impact.
The aquamarine family includes pale ice through sky blue to the saturated Santa Maria deep blue and the bluish-green Espirito Santo at the most prized end. Each color carries its own saturation range, and the most saturated stones tend to command the highest prices.
Aquamarines have symbolized clarity, harmony, and lasting communication for centuries. The name comes from aqua marina — water of the sea. Sailors carried aquamarines for safe passage; Roman tradition associated the stone with Neptune and faithful love.
Brazilian aquamarines, particularly from Minas Gerais (the Santa Maria mine), produce the deepest saturated blues — the standard against which other origins are measured. Madagascar aquamarines offer strong color in larger sizes
At Lisa Robin, settings start at $2,095 and range to approximately $3,295 in 14K gold for the most intricate halo and cluster designs. Platinum adds up to $400. A 1 carat aquamarine often starts around $200 for commercial quality and reaches into four figures per carat for fine Santa Maria material. The aquamarine itself drives most of the variation in final price.
All four metals we offer pair beautifully with aquamarine, but each combination reads differently. Pale ice flatters against white gold; saturated Santa Maria holds up against yellow gold; sea blue grounds against rose. Cooler stones favor white metal; warmer stones favor yellow.
Shape is part personal taste and part hand proportion. Emerald cuts and oval cuts are the most traditional for aquamarine — the elongated geometry shows off the color cleanly and the high crowns and deep pavilions of a good cut can boost saturation. Cushion and round cuts soften the geometry. Pear and marquise cuts add length and elegance but expose more vulnerable corners. Longer hands often suit emerald and round cuts; shorter fingers often benefit from oval, pear, or cushion.
Yes. Every Lisa Robin aquamarine engagement ring is custom: you choose the aquamarine (color, shape, origin, clarity, size), select a setting from our collection or modify one, and choose your metal and finger size. If you want a design that does not exist here, we work with you to create something entirely new. Custom aquamarine rings are crafted in 3-4 weeks from design approval.
Approximately 3-4 weeks from the time you approve the final design. From design approval, our workshop crafts each ring individually — there is no warehouse inventory at Lisa Robin. The 3-4 week timeline applies to both our signature designs and custom work.
Lab-created aquamarines are available by request. They are not displayed in our online feed because each one is sourced individually based on your color, size, and clarity preferences. Lab-grown stones are chemically and structurally identical to mined ones — same beryl, same hardness — and typically cost less than natural stones of comparable quality.