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

The Allison Solitaire Sapphire 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 sapphire.
$ 2,095.00
/
Color
Shape
Add gemstone

The Allison raises a blue sapphire on four prongs above a tapered band and gives it nothing to share the stage — cool blue lifted clean into the light. White gold keeps it icy; yellow gold deepens it.

A sapphire's blue comes from iron and titanium trading a charge inside the corundum — why sapphires are blue.

Metal Options 14K Yellow Gold, 14K White Gold, 14K Rose Gold, or Platinum. Sustainably sourced.
Center Blue sapphire
Style Sapphire solitaire engagement ring
Setting Four-prong head
Band Tapers from 1.4mm to 1.3mm
Setting Height Medium
Band Profile Tapered
Crafting Time Approximately 3-4 weeks

Setting starts at $2,095 in 14K gold and $2,495 in platinum.

How does the Allison differ from a typical sapphire engagement ring?

The Allison is a sapphire solitaire engagement ring designed by subtraction. Four rounded prongs hold the sapphire clean above a tapered band; no halos, side stones, or scattered diamonds compete with the center stone.

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 the eye toward the sapphire and keeps proportions delicate, making the center stone read larger by contrast.

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

A solitaire sapphire engagement ring lets the color carry the entire design without competing accents. A side stone or halo setting frames the center with diamonds that add sparkle and visual weight—best for paler or smaller stones that benefit from amplification.

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 Aug 19 to Aug 23
Shipping costs calculated at checkout

Subtraction as a Design Choice

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

The sapphire at the center carries the rest of the design's color responsibility. Sapphires come in a remarkable range — blue in every saturation from midnight to teal, but also yellow, pink, green, orange, peach, and the rare padparadscha that sits between pink and orange. A colored gemstone engagement ring with a sapphire center is as much about which sapphire as about which setting: a deep teal reads cool against white gold, a soft peach warms against rose, a yellow sapphire glows against yellow gold. Most couples come to a sapphire 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 sapphire, 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 Sapphire Engagement Ring
The Allison Solitaire Sapphire 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
Diamond Wrap Ring
Double Row Open Ring - Lisa Robin
Double Row Open Ring-14K Yellow Gold

Frequently Asked Questions About Lisa Robin Engagement Rings

Lisa Robin designs custom and made-to-order engagement rings across every major style — solitaire, halo, hidden halo, side stone, three stone, cluster, bezel, east-west, vintage, and twist. Each design can be set with a colorless diamond, a colored diamond, or a colored gemstone, in any shape, in 14K gold or platinum.
Settings in this collection start at $2,095. Paired with a 1 carat lab grown diamond center, a starting engagement ring is approximately $2,995. Final pricing depends on the design, the metal, and the diamond or gemstone you choose. Colored gemstone pricing varies by gem type, color, and origin, which we discuss during the design process.
Yes. You can personalize any design online — diamond, metal, and finger size — or book a private design appointment by Zoom, phone, or in studio to modify a design or create one from scratch. Lisa guides you through the process and you see renderings of your ring before it is crafted.
Each ring is made to order and ready in approximately 3-4 weeks from the time your design is approved.
Both are real diamonds with identical physical and optical properties. A lab grown diamond is created in a controlled setting and generally lets you reach a larger or higher-quality diamond for the same budget. A natural diamond forms over geologic time. The choice is yours.
It depends on how you want the diamond to sit on your hand. A solitaire puts the diamond first; a halo makes it read larger; a hidden halo adds sparkle only seen from the side; a bezel gives the most secure, modern line; a cluster or twist makes a more individual statement. Because every design is hand-crafted to your diamond, you can pair most styles with most shapes.
All four — 14K yellow, white, and rose gold, and platinum — wear well for daily use. White gold and platinum give the brightest, most neutral backdrop for a diamond. Yellow and rose gold add warmth around the center. The best choice is the tone you want to see on your hand.
Yes. If you love a design as it is, you can select your diamond, metal color, and finger size and complete your order online. An appointment is only needed if you want to modify a design or create something fully custom.
Every ring is made in the USA — designed in our private studio in Dayton, Ohio, and hand-crafted in our New York workshop. We serve couples nationwide through virtual appointments, and in person in Dayton.
Place your order online and we'll guide you through your diamond and design choices, or book a private design appointment — virtual, by phone, or in studio — to design your ring together from the start.
Back to Engagement Rings