Engagement Ring Gemstones Guide: Moissanite, Lab Diamond & More
The Complete Guide to Engagement Ring Gemstones: Moissanite, Lab Diamonds & Beyond
Everything you need to know about choosing the right stone, the perfect setting, and the gemstone that tells your love story.
Choosing an engagement ring is one of the most meaningful decisions you'll make. The gemstone at its centre carries weight, both literally and symbolically. It's the first thing people notice, the feature that catches light across a room, and the element that says something about the person who wears it.
But with so many options available, how do you decide between a classic diamond, a brilliant moissanite, or a richly coloured sapphire? And once you've chosen your stone, which ring setting brings out its best qualities?
This guide walks you through the most popular engagement ring gemstones, compares their brilliance and durability side by side, and helps you understand which settings pair best with each stone. Whether you're drawn to the fire of a moissanite engagement ring or the timeless elegance of a lab diamond, you'll find the clarity you need to make a confident choice.
Popular Engagement Ring Gemstones
Every gemstone carries its own personality. Some dazzle with fire, others captivate with colour, and a few do both. Here's a closer look at the stones most often chosen for engagement rings, with attention to the qualities that matter most: beauty, durability, and the story each one tells.
Diamond
Diamonds remain the most iconic choice for engagement rings, and for good reason. Scoring a perfect 10 on the Mohs hardness scale, they're the most durable gemstone on earth, capable of withstanding a lifetime of daily wear without losing brilliance or shape.
What makes a diamond truly extraordinary is its light performance. A well-cut diamond returns light with precision, creating a balance of white brilliance and spectral fire that no other natural stone quite replicates. Available in every shape from round and oval to emerald and pear, diamonds adapt to virtually any setting style.
For many couples, a diamond represents permanence and strength. It's a stone that has symbolised commitment for generations, and its appeal shows no sign of fading.
Moissanite
If you want a gemstone that commands attention the moment it catches light, moissanite is difficult to surpass. With a refractive index higher than diamond, it produces bold, colourful flashes of fire that are visible even from a distance.
Originally discovered in a meteor crater, moissanite is now lab-created, making it an ethical and sustainable choice. It scores 9.25 on the Mohs scale, placing it just below diamond in hardness. This means it resists scratching, won't cloud over time, and maintains its clarity for decades of everyday wear.
What sets moissanite apart is its value proposition. You can achieve a larger, more radiant centre stone at a fraction of the cost of a comparable diamond, without sacrificing durability or beauty. It pairs exceptionally well with every setting, from a clean solitaire to an ornate halo design.
Moissanite engagement rings are ideal for those who value striking brilliance, modern elegance, and a gemstone that performs beautifully across every style and setting.
Lab-Grown Diamond
Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. They're graded on the same 4C scale (cut, colour, clarity, carat) and offer the same hardness rating of 10 on the Mohs scale. The difference? They're created in a controlled laboratory environment rather than extracted from the earth.
This distinction matters for couples who care about ethical sourcing and environmental responsibility. Lab diamonds eliminate concerns about mining practices while offering the same fire, scintillation, and lasting durability that diamonds are known for.
Price is another significant advantage. Lab-grown diamonds typically cost 30–50% less than their mined counterparts at equivalent quality, allowing you to choose a larger stone or a more intricate setting without stretching your budget.
Explore Lovelri's collection of lab diamond engagement rings to see how these exceptional stones come to life in handcrafted settings.
Sapphire
Sapphires bring a depth of colour that few other gemstones can match. Most celebrated in deep, velvety blue, they also appear in pink, yellow, white, and even padparadscha (a rare pinkish-orange). With a Mohs rating of 9, sapphires are exceptionally hard and well-suited for daily wear.
Historically associated with loyalty, wisdom, and noble truth, sapphires carry profound symbolic weight. They've adorned the engagement rings of royalty for centuries, making them a timeless choice for anyone who values tradition and rich colour.
Sapphires pair beautifully with both white and warm-toned metals. They look particularly striking in cathedral settings, where the elevated profile showcases the stone's saturated hue from every angle.
Emerald
Emeralds are revered for their rich green colour and the sense of refinement they bring to any ring. Symbolising renewal, harmony, and enduring love, they're a deeply meaningful choice for an engagement ring.
At 7.5–8 on the Mohs scale, emeralds are softer than diamonds and sapphires. Their natural inclusions, often called the stone's "jardin" (French for garden), give each emerald a unique character. High-quality stones with good clarity can be worn confidently when set in a protective design that shields the stone's edges.
Emeralds work beautifully in vintage-inspired settings and pair especially well with nature-influenced designs, like those found in Lovelri's Botanical Garden collection.
Ruby
Rubies are the gemstone of passion. Their vivid red colour symbolises deep emotion, courage, and unwavering commitment. As one of the hardest coloured gemstones (9 Mohs), rubies offer excellent durability for everyday wear.
The finest rubies display a deep, saturated red with a subtle inner glow that jewellers call "pigeon blood." This intensity makes them one of the most captivating centre stones available, particularly in side-stone settings where flanking diamonds amplify the ruby's warmth.
A ruby engagement ring is a bold, confident choice that speaks volumes about the wearer's personality.
Morganite
Morganite has emerged as one of the most sought-after alternative gemstones, prized for its soft peach-pink colour and romantic warmth. With excellent clarity and a naturally bright appearance, it produces a flattering glow even in low light.
At 7.5–8 on the Mohs scale, morganite is durable enough for regular wear with mindful care. It pairs exceptionally well with rose gold, creating a cohesive, warm-toned composition that feels modern yet timeless.
Morganite looks stunning in halo and hidden halo settings, where the surrounding stones create a luminous frame that enhances the centre stone's gentle colour.
Aquamarine
Named after the sea, aquamarine enchants with its serene blue-green colour and crystalline clarity. It evokes calmness and purity, making it a refreshing alternative to traditional white stones.
With a Mohs rating of 7.5–8, aquamarine performs well in everyday wear when cared for properly. Its cool tones pair beautifully with white gold and platinum, and its natural brightness makes it a wonderful choice for modern ring designs that emphasise clean lines and minimalist elegance.
Moissanite vs. Lab Diamond: A Closer Look
Among all engagement ring gemstones, moissanite and lab-grown diamonds receive the most comparison. Both are ethically produced, visually stunning, and built for a lifetime of wear. But they differ in meaningful ways that affect how they look on your hand and how they fit your budget.
Brilliance & Fire
Moissanite has a higher refractive index (2.65 vs. diamond's 2.42), producing more colourful, rainbow-like flashes of light. Some prefer this bold, fiery sparkle.
Lab diamonds offer the same light performance as mined diamonds, with a balanced mix of white brilliance and spectral fire. Their sparkle is subtler and more classic.
Durability
Moissanite scores 9.25 on the Mohs scale, making it the second hardest gemstone used in jewellery. It won't scratch, chip, or cloud over time.
Lab diamonds score a perfect 10, matching the durability of mined diamonds exactly. Both stones are ideal for lifelong daily wear.
Value
Moissanite typically costs 70–90% less than a comparable diamond, allowing you to choose a larger centre stone or a more detailed setting within the same budget.
Lab diamonds offer 30–50% savings over mined diamonds while delivering identical quality and appearance.
Ethics & Sustainability
Both moissanite and lab diamonds are produced in controlled environments, free from mining-related ethical concerns. They represent a conscious, forward-thinking approach to fine jewellery.
Which should you choose? If you prioritize bold, fiery sparkle and maximum value, explore Lovelri's moissanite engagement rings. If you prefer the classic brilliance and prestige of a diamond without the mining footprint, browse our lab diamond collection. Both are handcrafted in Toronto by master jewellers with over 40 years of fine jewellery expertise.
How to Choose the Right Ring Setting for Your Gemstone
A gemstone's beauty is shaped as much by its setting as by the stone itself. The right setting enhances brilliance, protects the gem, and expresses the wearer's personal style. Here's how each of Lovelri's signature setting styles complements different gemstones.
Solitaire
The purest expression of a single stone. A solitaire setting removes all distraction, letting the gemstone's natural brilliance command full attention. This setting works beautifully with diamonds, moissanite, and lab diamonds, where the stone's fire and clarity speak for themselves.
Best for: Couples who appreciate timeless simplicity and want the centre stone to be the undisputed focal point.
Halo & Hidden Halo
A circle of smaller diamonds surrounds the centre stone, amplifying its perceived size and overall sparkle. Hidden halos tuck the accent stones beneath the centre gem for a subtle flash visible from the side. Halo engagement rings are especially effective with moissanite and morganite, where the additional light creates a cascading, luminous effect.
Best for: Those who love maximum sparkle and a stone that appears larger than its carat weight.
Cathedral
Inspired by the soaring arches of grand architecture, cathedral settings raise the centre stone above the band using elegant metal supports. This elevation catches more light and showcases the stone from every angle. Cathedral settings pair magnificently with sapphires, diamonds, and moissanite.
Best for: Those who want their ring to feel architectural, elevated, and unmistakably refined.
Pavé
Tiny diamonds line the band, creating a continuous ribbon of shimmer that draws the eye toward the centre stone. Pavé engagement rings add dimension and luxury without overwhelming the design. They work with virtually every centre gemstone, from lab diamonds to emeralds.
Best for: Anyone who wants their ring to sparkle from every angle, with an artful balance of detail and elegance.
Side Stones
Flanking stones create a sense of balance and visual weight, framing the centre gem with complementary brilliance. Side-stone engagement rings are ideal for rubies, sapphires, and moissanite, where the contrast between the centre stone and its flanking diamonds creates a striking composition.
Best for: Couples seeking a ring with depth, symmetry, and a sense of generous luxury.
Modern
Clean lines, unexpected angles, and minimalist sensibility define modern engagement ring designs. These settings suit couples who want something contemporary without compromising craftsmanship. Moissanite and lab diamonds look especially compelling in modern designs, where the stone's brilliance meets sculptural metalwork.
Best for: Those with a fashion-forward aesthetic who value originality and architectural beauty.
Botanical Garden Collection
Floral-inspired settings sculpted as heirlooms from a garden that never fades. Lovelri's Botanical Garden collection features nature-inspired designs that celebrate organic forms, delicate petal-like details, and flowing metalwork. These designs pair wonderfully with coloured gemstones like emerald, sapphire, and morganite, as well as moissanite and lab diamonds.
Best for: Nature lovers and romantics who want their ring to feel like a living work of art.
Engagement Ring Gemstones: At a Glance
Use this comparison to quickly evaluate the beauty, durability, and unique strengths of each gemstone. Every stone on this list is a worthy centre piece for an engagement ring. The right choice depends on your priorities: brilliance, colour, budget, or symbolism.
| Gemstone | Hardness | Appearance | Why Choose It |
|---|---|---|---|
| Diamond | 10 Mohs | Exceptional white brilliance with balanced fire | The classic, timeless choice for lifelong wear and enduring elegance |
| Moissanite | 9.25 Mohs | Intense sparkle with bold, colourful fire | Maximum brilliance and exceptional value; ideal for those who want striking radiance |
| Lab Diamond | 10 Mohs | Identical to mined diamond in every optical property | Ethical, sustainable, and identical to mined diamonds at a lower price |
| Sapphire | 9 Mohs | Deep, saturated hues; most iconic in royal blue | Rich colour, royal heritage, and strong symbolism of loyalty and wisdom |
| Emerald | 7.5–8 Mohs | Velvety green with a soft, warm glow | Distinctive vintage charm and deep symbolic meaning of renewal |
| Ruby | 9 Mohs | Vivid red with intense inner glow | Bold passion and emotional depth; one of the hardest coloured stones |
| Morganite | 7.5–8 Mohs | Soft peach-pink with romantic warmth | Feminine, modern elegance; pairs beautifully with rose gold settings |
| Aquamarine | 7.5–8 Mohs | Serene blue-green with crystalline clarity | Cool, calming beauty for those who love light colour and modern design |
How to Choose the Right Gemstone for Your Partner
Selecting a gemstone goes beyond colour preference. It's about understanding your partner's lifestyle, values, and the emotions you want the ring to express. Here's a practical framework to guide your decision.
Consider Their Daily Routine
How your partner uses their hands every day matters more than you might think. If they work with their hands, exercise frequently, or rarely remove jewellery, a harder stone like diamond, moissanite, or sapphire (9+ Mohs) offers the best long-term performance. These stones resist scratches, maintain their polish, and require minimal maintenance.
Softer stones like morganite, emerald, or aquamarine (7.5–8 Mohs) are beautiful choices for those who enjoy rotating jewellery or prefer a more delicate aesthetic. They'll thrive with occasional gentle care.
Think About Their Style
Pay attention to the jewellery your partner already wears. Do they gravitate toward classic, understated pieces? A solitaire setting with a diamond or moissanite might feel most natural. Do they prefer bold, statement-making accessories? A halo engagement ring with a vibrant sapphire or a colourful moissanite could be the perfect match.
Consider metal preference too. If they wear mostly cool-toned silver and white gold, diamond and aquamarine complement that palette. If they lean toward warm golds and rose gold, morganite and ruby create a cohesive, warm-toned look.
Align with Your Values
For couples who prioritize ethical sourcing and sustainability, moissanite and lab-grown diamonds represent a conscious choice. Both are created in controlled environments, free from the environmental and ethical concerns associated with traditional mining. They allow you to invest in a beautiful, lasting gemstone while staying true to your principles.
Balance Beauty with Budget
Your budget shouldn't limit your ability to find a spectacular ring. Here's a general pricing hierarchy to help you plan:
- Moissanite: The most accessible option for maximum size and brilliance. Ideal for couples who want a large, stunning centre stone.
- Lab diamonds: A middle ground that delivers genuine diamond quality at a significant discount to mined stones.
- Sapphires and rubies: Premium coloured gemstones that hold their value and offer exceptional durability.
- Mined diamonds: The traditional premium option, with pricing that reflects scarcity and market demand.
Designing a Custom Engagement Ring
Sometimes the perfect ring doesn't exist on a shelf. It exists in your imagination. That's where custom engagement ring design comes in.
At Lovelri, the custom process is guided by master jewellers in Toronto with over 40 years of fine jewellery expertise. Here's how it works:
Complimentary Consultation
Share your vision with our design team. Together, you'll explore every detail: gemstone selection, centre stone size, setting style, band design, metal choice, and personal touches that make the ring uniquely yours.
Concept & 3D Rendering
Your vision takes shape through a 3D digital rendering, allowing you to see your ring before it's crafted. Lovelri's designers refine every element with you until it feels perfect.
Master Craftsmanship
Your design is brought to life by hand in Toronto. Sculpted in gold or platinum, meticulously set, and polished to perfection, each ring is a testament to heritage artistry meeting modern precision.
Delivered to You
The creation process takes approximately four weeks, after which your finished piece is carefully prepared and delivered. Expedited timelines are available upon request.
Whether you're combining a moissanite centre stone with a pavé band, creating a nature-inspired design from the Botanical Garden collection, or reimagining a cathedral setting with your own artistic vision, the custom process ensures the ring is as personal as the moment it represents.
Engagement Ring Gemstones: Frequently Asked Questions
What is the difference between moissanite and a lab diamond?
Moissanite and lab diamonds differ in composition, brilliance, and price. Moissanite is silicon carbide with a higher refractive index (2.65 vs. 2.42), producing more colourful fire and rainbow flashes. Lab diamonds are chemically identical to mined diamonds, offering the same optical properties and hardness (10 Mohs vs. moissanite's 9.25). Moissanite typically costs 70–90% less than a comparable lab diamond, making it an exceptional value for couples who prioritize brilliance and affordability. Both stones are ethical, sustainable, and built for lifelong daily wear.
What are the best ring settings for moissanite engagement rings?
Moissanite performs beautifully in virtually every setting style. Solitaire settings let the stone's natural brilliance take centre stage. Halo and hidden halo settings amplify its sparkle with surrounding diamonds. Cathedral settings provide elegant height and security. Pavé bands add continuous shimmer, and side-stone settings create a balanced, luxurious composition. The best setting depends on your personal style and how much emphasis you want on the centre stone.
How do I customize an engagement ring?
Customizing an engagement ring begins with a consultation where you share your vision with a jeweller. At Lovelri, the custom design process includes four steps: a complimentary initial consultation to discuss diamond selection, setting, and style; a concept creation phase with 3D digital renderings; master craftsmanship in Toronto where your design is sculpted in gold or platinum; and careful delivery of the finished piece. The entire process takes approximately four weeks, with expedited options available.
Are lab diamonds worth it for an engagement ring?
Lab diamonds offer the same physical, chemical, and optical properties as mined diamonds at a significantly lower price point, often 30–50% less. They are ethically produced without environmental mining impact and are graded on the same 4C scale. For couples who value sustainability, transparency, and maximizing quality per dollar, lab diamond engagement rings are an excellent and increasingly popular choice.
Find the Gemstone That Tells Your Story
Every love story deserves a ring crafted with intention, artistry, and care. Whether you're drawn to the fiery brilliance of moissanite, the enduring prestige of a lab diamond, or the rich colour of a sapphire, Lovelri's master jewellers in Toronto are here to bring your vision to life.
