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Every stone listed with Mohs hardness — alexandrite, moss agate, moonstone, sapphire, morganite, moissanite, and more.
Why Choose a Colored Gemstone Over a Diamond
The non-diamond engagement ring category has moved from counterculture to mainstream over the last decade, and the reasons are structural rather than stylistic. Colored gemstone engagement rings offer three things that diamonds, by definition, cannot.
Color as personality. A diamond is colorless by design. That's a feature for buyers who want sparkle and neutrality — but it means the ring can't carry personal meaning through color. A moss agate ring looks like a forest captured in stone. An alexandrite shifts from teal to purple depending on the light. A moonstone catches blue flash at specific angles. These aren't interchangeable design choices; they're expressions of taste that a colorless stone can't offer.
Distinctive design. At any given engagement ring showcase, roughly 85–90% of rings feature a center diamond. A colored gemstone engagement ring looks different on the hand because it is different — which matters for buyers who want their ring to be recognizably theirs, not a variation on a template everyone else is wearing.
Price honesty. Colored gemstone engagement rings are priced based on the actual rarity and beauty of the stone, not on marketing-driven pricing structures that have been building diamond prices for decades. A sapphire, alexandrite, or moss agate ring of comparable craftsmanship to a diamond ring typically costs a fraction of the price — and that pricing reflects what the stone genuinely is, not what an industry has spent a century telling buyers a stone should cost.
For the full decision framework on choosing between gemstones — including durability comparisons, symbolism, care requirements, and budget tiers — read our comprehensive best gemstones for engagement rings guide.
The Gemstones in This Collection
Each gemstone in the Aquamarise® range has its own dedicated collection with deeper information, style options, and full product range. Below is a brief orientation to help you decide which stone to explore further.
Moss Agate
The most recognizable nature-inspired stone in fine jewelry. Deep green dendritic inclusions create a landscape-in-stone effect. Best for buyers drawn to forest, earth, and nature symbolism. Browse the full moss agate engagement rings collection for complete product range and stone-specific FAQs.
Alexandrite
The color-change stone. Reads teal or blue-green in daylight and shifts to purple-red under incandescent light. Best for buyers who want a ring that changes with the day. See the alexandrite engagement rings collection for full details.
Aquamarine
Cool, icy pale blue. The March birthstone. Best for buyers drawn to water, sky, and calm symbolism — and one of the most durable colored stones at 7.5–8 on the Mohs scale. Full range at the aquamarine engagement rings collection.
Sapphire
Classic saturated blue, or color-change varieties in teal, pink, yellow, and white. The September birthstone and the most durable colored gemstone option at 9 on the Mohs scale. Complete collection at sapphire engagement rings.
Moonstone
Soft white stone with adularescent blue flash. The June birthstone. Best for buyers drawn to lunar, celestial, and intuitive symbolism. Browse at the moonstone engagement rings collection.
Herkimer Diamond
Natural double-terminated quartz with raw architectural geometry. Not a diamond — a quartz crystal with diamond-like clarity. Best for buyers drawn to raw, unpolished, geological aesthetics. See the Herkimer diamond engagement rings collection.
Morganite
Soft pink beryl, in the same gem family as aquamarine. Warm, romantic, and flattering against most skin tones. Full range at morganite engagement rings.
Garnet
Deep red stone with winter symbolism. The January birthstone. Best for buyers drawn to bold, saturated red color. Browse at the garnet engagement rings collection.
Blue Sandstone
Deep blue manmade glass-based stone with suspended copper flecks that create a starry-night effect. Best for buyers drawn to celestial, night-sky aesthetics. See the blue sandstone jewelry collection for the full range.
Choosing a Gemstone by Aesthetic Direction
If you're not sure which stone is right yet, deciding by aesthetic direction is often more useful than comparing stones one at a time. Most buyers walk in knowing the feeling they want the ring to carry even when they don't know the specific stone.
If you want nature-inspired romance — moss agate, moonstone, and aquamarine are the strongest choices. Explore the full nature-inspired engagement rings collection across all stones.
If you want fantasy or otherworldly — alexandrite, blue sandstone, moonstone, and Herkimer diamond lead the category. See fantasy-inspired engagement rings.
If you want dark, gothic, or bold — garnet, black onyx, sapphire in dark tones, and specialty stones anchor this look. Browse the Lovers of the Dark™ collection.
If you want vintage or antique character — sapphire, moonstone, and morganite suit vintage and Edwardian-inspired settings best. See vintage engagement rings.
If you want classic color — sapphire (blue), aquamarine (pale blue), and morganite (soft pink) are the most traditional colored gemstone choices, with the longest history in engagement ring use.
Choosing a Gemstone by Durability
If the ring will face heavy daily wear — manual work, sports, active lifestyle — durability matters more than aesthetics. The Mohs hardness scale measures scratch resistance, with diamond at 10 as the reference point.
Sapphire (Mohs 9)
is the most durable colored gemstone option and the closest to diamond in scratch resistance. It's the top recommendation for buyers who don't want to think about the ring during daily wear.
Aquamarine and morganite (Mohs 7.5–8)
are solidly durable for daily engagement ring wear. Both hold up well over decades.
Alexandrite (Mohs 8.5)
is surprisingly durable for a color-change stone — nearly as hard as sapphire.
Moss agate (Mohs 6.5–7)
is durable enough for engagement ring wear but benefits from bezel settings that protect the stone edges.
Moonstone and Herkimer diamond (Mohs 6–7.5)
are more delicate and suit buyers who are mindful about removing the ring during high-impact activities.
Blue sandstone (Mohs 5.5–6)
is the softest option in the range and works best in protective settings.
For the full durability breakdown across every stone Aquamarise® offers, read our jewelry care guide.
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Engagement Rings·Moss Agate Engagement Rings·Alexandrite Engagement Rings·Aquamarine Engagement Rings·Sapphire Engagement Rings·Moonstone Engagement Rings·Herkimer Diamond Engagement Rings·Morganite Engagement Rings·Garnet Engagement Rings·Blue Sandstone Jewelry·Nature-Inspired Engagement Rings·Fantasy-Inspired Engagement Rings·Vintage Engagement Rings·Lovers of the Dark™·Sterling Silver Engagement Rings·Custom Ring Builder·Best Gemstones for Engagement Rings Guide·Jewelry Care Guide·Find Your Ring Size