The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
The Sierra Pear Aquamarine Halo Engagement Ring | Lisa Robin
Engagement Rings

The Sierra Pear Aquamarine Halo Engagement Ring

The Sierra is a pear-shaped aquamarine inside a halo that points outward at four directions. The pear cut carries the lyricism; the marquise compass accents add a structural counterweight.
$ 2,695.00
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The Sierra cradles a pear-cut aquamarine in a white diamond halo with larger rounds at the compass points — the pointed pear given direction, its cool blue-green held clean inside the bright frame.

Aquamarine takes its sea-blue from a trace of iron in the beryl — why aquamarine is blue.

Metal Options 14K Yellow Gold, 14K White Gold, or 14K Rose Gold. Sustainably sourced.
Center Pear cut aquamarine
Halo Round white diamond cluster with larger round diamonds at the compass points
Style Aquamarine pear halo engagement ring
Setting Six rounded prongs
Band 2mm
Setting Height Medium
Crafting Time Approximately 3-4 weeks

Setting starts at $2,695 in 14K gold.

How does the Sierra differ from a typical pear-shaped engagement ring?

Most pear-shaped rings frame the center stone with a continuous halo of round accent diamonds. The Sierra adds marquise diamonds at the compass points around the halo, their pointed tips extending the geometry outward in four directions.

Why a pear cut rather than another shape for the Sierra?

The pear cut combines a rounded end and a pointed end, giving the setting both lyrical curve and directional pull. The halo's marquise compass points echo that directional quality, and round or cushion cuts wouldn't read against this geometry the same way.

When does a marquise-accented aquamarine engagement ring make sense?

Marquise diamonds carry direction in a way round accents don't—their pointed tips create angular geometry. This aquamarine engagement ring suits couples drawn to botanical motifs or architectural design, where the aquamarine itself leads rather than the metal around it.

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

Pear and Compass, Curve Meeting Point

A pear cut is asymmetric by nature — one rounded end, one pointed. The Sierra answers that asymmetry with halo geometry that points in four directions of its own.

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 Sierra reads both lyrical and dynamic — the pear's curve sits against the directional pull of the marquise compass points. The Sierra joins a Lisa Robin tradition of pear shape and halo engagement rings designed for couples who want softness and structure together.

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

My fiancé designed my engagement ring with Lisa. I wanted something with a vintage feel and a blue center stone. They decided on this gorgeous aquamarine and chose rose gold to accent the blue. I love it, and it is perfect. Thank you Lisa, he wouldn't have been able to do it without you.

Sam & Sierra
Blacklick OH

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 & Zane
Blountville TN

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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.
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