Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin
Engagement Rings

The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring

An oval moss agate cabochon in five sizes, with a trio of lab created diamonds on each side. Every moss agate is unique — yours won't look like the photograph.
$ 2,775.00
/
Color

The Sophia frames an oval moss agate cabochon with a trio of lab diamonds on each side — a marquise and two rounds set like foliage around a stone that is itself a small green landscape. No two are alike; the mossy pattern in yours will be its own, and unlike the one in these photographs.

Moss agate's green isn't a body color at all but mineral inclusions branching through the quartz like ferns — explore colored gemstone rings.

Metal 14K Yellow, White, or Rose Gold. Sustainably sourced.
Center Oval moss agate cabochon — 8x6, 9x7, 10x8, 11x9, or 12x10mm
Diamonds Two 4x2mm marquise and four round lab created diamonds
Setting Side cluster, three diamonds each side
Band Tapered, polished
Crafting Time Approximately 3-4 weeks

Setting starts at $2,775 in 14K gold. Paired with an 8x6mm oval moss agate, the Sophia Moss Agate starts at approximately $3,025.

What is moss agate?

Moss agate is a form of chalcedony — a quartz — with green dendritic inclusions running through it. Despite the name there's no moss involved: those branching green threads are minerals, mostly iron and manganese, that crystallized inside the gemstone as it formed. The pattern is different in every single one, which is why yours won't match the photographs. It's associated with growth and new beginnings, though the appeal for most couples is simpler than that: no one else has this one.

Why is the moss agate a cabochon instead of faceted?

A cabochon is polished into a smooth dome rather than cut with facets. Facets exist to bounce light back out of a transparent diamond — that's what makes it sparkle. Moss agate isn't working that way: what you want to see is the pattern suspended inside it, and a smooth dome shows that clearly while facets would fracture the view. The cut follows the material.

Which moss agate size should I choose, and how durable is it?

The moss agate comes in five oval sizes — 8x6, 9x7, 10x8, 11x9, and 12x10mm. Larger isn't automatically better here: because the pattern inside every moss agate is different, size changes how much of that pattern you see. A 12x10 shows a whole landscape; an 8x6 shows a fragment of one. Neither is more correct, and we'll send you an image of the actual gemstone before it's set either way. On durability — worth knowing before you choose. Moss agate sits around 6.5 to 7 on the Mohs hardness scale, meaningfully softer than a diamond at 10 or a sapphire at 9. It holds up for daily wear but asks more of you: take it off for anything abrasive, including gardening, the gym, cleaning, and beach sand, and store it away from harder gemstones. A cabochon's smooth dome has no fragile edges, which helps. Nothing else looks like moss agate, so there's no substitute that gives you the same thing in a harder material — that's the real tradeoff. If durability matters more to you than this particular look, a green diamond is a different direction worth considering. Bring it to an appointment and we'll talk it through.

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 Ships Aug 16 to Aug 23
Shipping costs calculated at checkout

The Sophia Oval Moss Agate Engagement Ring

Moss agate isn't moss. The green threading through it is mineral — iron and manganese that crystallized inside chalcedony as it formed, in branching patterns that happen to look like foliage caught in ice. Nobody designed it, and no two are the same.

That's why it's cut as a cabochon: a smooth polished dome rather than facets. Faceting is how you make a diamond throw light back at you. A moss agate has something else to show, and facets would only interrupt it.

Around it sit a trio of lab created diamonds on each side — a 4x2mm marquise with two rounds — arranged as a botanical cluster that echoes the branching inside the gemstone. The band tapers so nothing competes with the center.

The moss agate is included in your ring. Because each one is unique, we'll send you an image of the actual gemstone before it's set, so you see the exact piece going into your ring.

Design Process

The Lisa Robin Design Experience

A thoughtful process designed to bring clarity and confidence to the creation of your ring.

Online Ordering

Order your engagement ring through a clearly guided online experience, supported by in-depth educational resources throughout the website. If you’d like to personalize the setting, simply place your order—we’ll follow up to refine the details and align everything with your preferences.

Private Design Appointments

For a more collaborative experience, work with us one-on-one, either in person or virtually. We’ll guide you through each decision in real time, shaping your engagement ring with clarity and intention.

This ring is offered complete. The center is already selected and included in the price, so there's nothing further for you to source or choose.

Where the center is a one-of-a-kind gemstone, we'll send you an image of the actual gemstone before it's set — so you see the exact piece going into your ring rather than a representative photograph.

Before your ring is hand-crafted, you’ll review detailed renderings created using your diamond’s dimensions. Multiple views allow proportions and design details to be carefully reviewed, and you’ll approve the design before crafting begins. If a wedding ring is selected on the same order, renderings will also show the rings individually and together so you can see how they pair.

Once your design is approved, your ring is hand-crafted specifically for you and typically completed in about three weeks.

What our customers say

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
Shown in 10x8mm Moss Agate*The Sophia Oval Moss Agate Lab Diamond Accented Engagement Ring | Lisa Robin#color_14k-yellow-gold

Complete the style

Sophia pairs beautifully with Claire or Evara curved wedding rings.

The Claire Marquise Diamond Open Wedding Ring | Lisa Robin#color_14k-yellow-gold
The Claire Marquise Diamond Open Wedding Ring
Evara twist lab diamond 10K yellow gold wedding band by Lisa Robin#color_10k-yellow-gold
The Evara Twist Wedding Band

FAQ For Diamond Engagement Ring

Yes. Every design can be guided online from start to finish. Once you select your diamond and preferred setting, we provide personalized guidance and create detailed renderings using your exact diamond before hand crafting begins.

Confidence comes from proportion. We review scale, finger size, and structural details together. Detailed renderings created with your selected diamond allow you to evaluate balance and presence before your ring is crafted.

Yes. You select the exact diamond. Whether ordering online or during a private appointment, your chosen diamond is secured first and used to create your design renderings.

Absolutely. You will receive realistic CAD renderings created with your selected diamond, allowing you to review proportions, orientation, prong style, and structural details before approving your ring for hand crafting.

The outcome is the same — a fully guided design process.
• Online: structured guidance through curated options and digital review
• Appointment: in-person discussion with hands-on comparison and proportion review
•Both approaches are intentional and equally supported.

Each design shown is intentional and ready to be crafted. You may personalize metal, diamond, proportions, and select structural refinements. The foundation is design-led; the final ring is crafted specifically for you.

Back to Engagement Rings