Shown in 1.5 Carat Blue Sapphire
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in yellow gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in white gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in rose gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in platinum by Lisa Robin
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in yellow gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in white gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in rose gold by Lisa Robin
Shown in 1.5 Carat Blue Sapphire*The Sierra Pear blue sapphire halo diamond Engagement Ring in platinum by Lisa Robin
Alternative Engagement Rings

The Sierra Vintage-Inspired Sapphire and Diamond Engagement Ring

The Sierra is a pear-cut sapphire engagement ring set in a round diamond halo, with larger diamonds marking the four compass points and round diamonds continuing down the shank.
$ 2,695.00
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The Sierra cradles a pear-cut sapphire in a vintage-style white diamond halo with larger rounds at the compass points — the oldest pairing in colored engagement rings, and among the most durable, the pear's fine point safe in a gem nearly as hard as a diamond.

Metal Options 14K Yellow Gold, 14K White Gold, 14K Rose Gold, or Platinum. Sustainably sourced.
Center Sapphire
Halo Round white diamond cluster with larger round diamonds at the compass points
Style Vintage-inspired sapphire 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 and $3,095 in platinum. Choose your center from the sapphire collection.

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

Most pear halos use one uniform ring of round diamonds. The Sierra sizes them unevenly — larger round diamonds mark the four compass points with smaller ones filling between, which is what gives the halo its vintage cluster look — and round diamonds continue down the shank so the brightness doesn't stop at the halo.

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

The pear cut gives you one rounded end and one point, so the ring has a direction: the point aims up the finger and draws the hand longer. The Sierra's larger compass-point diamonds pick that axis up at four places around the halo, so the outline reads as four marked directions instead of a plain circle.

Will the halo make the Sierra look larger than the sapphire I choose?

Yes, noticeably. The halo adds a full ring of round diamonds around the sapphire, and the larger compass-point diamonds push the outline further at the top, bottom, and both sides, so a smaller pear still covers the finger like a larger one. If you want the sapphire itself to lead, size up the center rather than relying on the halo to do 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 sapphire engagement ring ships in 3-4 weeks, approximately Oct 21 to Oct 25
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.

Sapphire runs from every saturation of blue to yellow, pink, green, and the rare padparadscha, so the color story here is the sapphire you choose against your metal.

On the hand, the Sierra reads both lyrical and dynamic — the pear's curve against the directional pull of the compass points. The Sierra is for couples who want a pear's softness held inside structure, not a bare solitaire's point left unframed.

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

Frequently Asked Questions About Alternative Engagement Rings

Alternative engagement rings aren’t defined by unusual metals but by unique gemstones or design choices. The metals themselves remain traditional and high-quality, typically 14k, 10k, or 18k by request, yellow, white, or rose gold, as well as platinum. Since nearly all makers use recycled metals today, the distinction comes from the stone and the design, not the metal type.
Absolutely. “Alternative” doesn’t have to mean opting out of diamonds altogether. It can refer to the style, setting, or the type of diamond you choose, such as reclaimed diamonds, lab-grown diamonds, or even colored diamonds that offer a distinctive, non-traditional look. These options allow you to enjoy the timeless appeal of a diamond while expressing your individuality through a unique design approach.
Made-to-order engagement rings take approximately 3–4 weeks to create.
The cost of the setting itself is generally the same regardless of whether you choose a traditional diamond or an alternative gemstone. The biggest price difference comes from the stone: many alternative gemstones are less expensive than diamonds, which can make the overall ring more budget-friendly while still offering exceptional beauty and craftsmanship.
Some gemstones are softer than diamonds and may need more mindful wear or occasional polishing. Lisa Robin provides guidance on how to care for each unique stone and setting.
In most cases, meaningful modifications to an alternative engagement ring require the piece to be remade rather than simply adjusted. Because these designs often use unique settings, stone shapes, or construction methods, resizing or altering components can compromise the integrity of the original ring. If you anticipate wanting future upgrades or changes, it’s best to discuss those possibilities during the design process so the ring can be recreated intentionally when the time comes.
Heirloom quality is determined by craftsmanship, material integrity, and timeless design, not just the gemstone. A thoughtfully made alternative ring can be passed down for generations.
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