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

The Allison Solitaire Ruby 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 ruby.
$ 2,095.00
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How does the Allison differ from a typical ruby engagement ring?

The Allison is a ruby solitaire engagement ring composed by subtraction rather than addition. Four rounded prongs hold the ruby clean above the metalwork; nothing else competes with the center.

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 where it meets the four prongs. The taper draws the eye inward toward the ruby and keeps proportions delicate around the setting so the ruby reads larger by contrast.

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

A solitaire ruby engagement ring lets the color of the center carry the entire design with no accent stones competing for attention. A side stone or halo ruby engagement ring frames the center with diamond accents that add sparkle and visual weight, benefiting a paler or smaller stone.

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 Jul 09 to Jul 13
Shipping costs calculated at checkout

Subtraction as a Design Choice

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

The ruby at the center carries the rest of the design's color responsibility. Rubys come in a remarkable range — red across a real spectrum — pinkish red, pigeon's blood, deep burgundy, the rare orange-tinged 'sunrise' rubies from East Africa. A colored gemstone engagement ring with a ruby center is as much about which ruby as about which setting: a deep pigeon's blood reads vivid against yellow gold, a pinkish red warms against rose gold, a burgundy reads intense against white gold. Most couples come to a ruby 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 ruby, 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 Ruby Engagement Ring
The Allison Solitaire Ruby 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

Frequently Asked Questions About Gemstone Engagement Rings

Yes. Ruby is a 9 on the Mohs hardness scale, second only to diamond. That resists scratching, holds polish, and stands up to decades of daily wear. Rubys have anchored engagement rings for centuries because they are built to last as long as the commitment they represent.
The ruby family includes red across a true spectrum — pinkish red, pigeon's blood (the most prized), burgundy, and the rare orange-tinged "sunrise" rubies from East Africa. Each color carries its own saturation range, and the most saturated stones tend to command the highest prices.
Rubys have symbolized passion, protection, and vitality for centuries. Burmese warriors believed rubies made them invincible in battle; the stone has signaled bold love across cultures for thousands of years.
Burmese (Myanmar) rubies, particularly the legendary Mogok mines, produce the most coveted pigeon's blood red. Mozambique rubies (since the 2010s) rival Burmese quality at more accessible prices
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 ruby often starts around $500 for commercial quality and reaches well into five figures for fine Burmese or Mozambique stones. The ruby itself drives most of the variation in final price.
All four metals we offer pair beautifully with ruby, but each combination reads differently. A bright pigeon's blood reads vivid against yellow gold, dramatic against white. A pinkish red warms against rose gold. A burgundy reads intense against white gold.
Shape is part personal taste and part hand proportion. Oval and cushion cuts are the most traditional and read vivid from any angle. Round rubies are rarer and command a premium. Pear and marquise cuts add directional movement. Emerald cuts read modern but show inclusions more openly — relevant for a stone where eye-clean rubies are less common than eye-clean sapphires. Longer hands often suit round and cushion shapes; shorter fingers often benefit from pear, oval, or marquise.
Yes. Every Lisa Robin ruby engagement ring is custom: you choose the ruby (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 ruby 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 rubys are available by request. They are not displayed in our online ruby feed because each one is sourced individually based on your color, size, and clarity preferences. Lab-grown rubys are chemically and structurally identical to mined rubys — same corundum, same 9 on Mohs — and typically cost 30-60% less than natural stones of comparable quality.
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