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
Twist 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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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 Jul 09 to Jul 13
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

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

The Sierra Pear Aquamarine Halo Engagement Ring

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

More about Lisa Robin twist engagement rings

A twist engagement ring features a band that twists, crosses, or weaves rather than running as a smooth, straight circle. The twist can be a single strand wrapping around the band, two strands intertwining, a single criss cross over the band, or an infinity-inspired interlocking shape. The diamond sits at the center as the focal point of the moving band.
Twist designs are widely associated with the path of two lives intertwining — the band as metaphor for partnership, the diamond as the point where the paths meet. Infinity twists specifically reference unending continuity. Some couples choose a twist for the explicit symbolism; others choose it for the visual movement. Both readings are valid and the meaning is whatever resonates with you.
Twist engagement ring settings start at $2,295. A 1 carat lab grown diamond brings most rings to roughly $3,195 fully crafted. Twist settings cost slightly more than equivalent solitaire settings because the twist work requires additional precision metalwork. We share itemized pricing for every quote.
Every shape works in a twist setting. Round diamonds anchor the movement clearly. Oval and emerald cut diamonds echo the directional motion of the twist. Marquise and pear shapes flow with the twist. Cushion and asscher shapes ground the movement. The choice depends on whether you want the diamond to anchor the twist or join its motion.
Yes — but the pairing requires planning. Twist engagement rings often pair best with a curved or contoured wedding ring that follows the line of the twist. Some twist designs (particularly those with twists only on the front half) allow a straight band to sit flush at the back. We plan the wedding ring during the engagement ring design so both work together.
Yes. Two-tone twist engagement rings (yellow gold twisting with white gold, or rose gold with white gold) emphasize the two-strand structure of the twist by using metal change to mark each strand. Two-tone is especially effective in double twist and criss cross designs. We discuss two-tone options during the design process.
Yes. Choose any of our twist designs (Leila, Amelia, and others) with your selected diamond, metal, and twist style. We can adjust band width, twist density, and metal combinations. For fully bespoke twist designs, book a private design appointment with Lisa to start.
Yes. Twist construction adds dimensional character but doesn't extend significantly beyond the band's overall width or thickness. The metal strands are bonded together where they meet — not just visually entwined — so the band holds its shape across years of wear. The twist's spaces between strands can collect lotion or skin oils more than smooth bands, so weekly cleaning with warm soapy water is more important than with a flat band. Otherwise, comfort is similar to any engagement ring of comparable size and setting profile.
Yes, and it's one of the most distinctive variations we make. Diamonds can run along one or both strands of the twist, creating continuous sparkle that follows the helix around the band. The technique extends the visual interest of the twist construction with diamond detail, and reads as more designed than plain twist bands. Diamond placement options include the entire twist length, the top visible portion only (similar to half eternity), or graduated placement that's diamond-dense near the center and fading toward the back of the band. We discuss diamond detail during the design conversation.
Often, yes. The twist shank's dimensional construction doesn't always sit flush with a straight wedding band — there can be a visible gap between the twist's curves and a straight band's edge. A curved or contoured wedding band shaped to fit the engagement ring's twist sits flush and reads as a designed pair. We design custom contoured wedding bands during a private appointment for couples whose engagement ring needs one. A non-curved wedding band can also work as deliberate contrast, but the pair reads more like two separate rings than a designed set.
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