The diamond industry spent the better part of a century convincing everyone that a diamond is the only serious gemstone for jewelry. That campaign was extraordinarily successful. It was also incomplete. The world of gemstones extends far beyond the brilliant-cut colorless stone, into territory that is arguably more beautiful, more interesting, and in many cases more rare.
Moonstones, opals, labradorite, tourmaline, alexandrite. These are stones with optical phenomena that diamonds cannot replicate, colors that shift and play in ways that stop people mid-conversation, and histories rooted in cultures spanning every continent. Here is what you should know about the gems that exist beyond the diamond counter.
Moonstones: Captured Light
What Makes Moonstones Special
Moonstone is a variety of the feldspar mineral group. Its defining characteristic is adularescence, a billowy, floating glow that appears to move across the stone's surface as you tilt it. This effect is caused by light scattering between microscopic layers of two different feldspar minerals (orthoclase and albite) within the stone.
The best moonstones display a strong, blue-white adularescence that floats over a colorless or slightly warm body color. The effect has been compared to moonlight on water, which is how the stone got its name.
Types and Origins
- Rainbow Moonstone: Despite its name, rainbow moonstone is actually a transparent variety of labradorite (a different feldspar mineral). It shows multicolored flashes of blue, green, peach, and gold. It is widely available and more affordable than true moonstone.
- Blue Sheen Moonstone: The most valuable variety. A strong, centered blue adularescence over a nearly colorless body. The finest examples come from Sri Lanka.
- Peach/Champagne Moonstone: A warm-bodied variety with a softer, peachier glow. Popular in contemporary jewelry design.
- Cat's Eye Moonstone: Rare specimens that display both adularescence and chatoyancy (a sharp line of light like a cat's eye). These are prized by collectors.
Care Considerations
Moonstone scores 6-6.5 on the Mohs scale, which makes it significantly softer than most gemstones used in jewelry. It can scratch, chip, and even cleave (split along crystal planes) if subjected to hard impacts. Moonstone is best suited for earrings, pendants, and brooches. If you wear a moonstone ring, choose a protective bezel setting rather than exposed prongs, and remove it during physical activity.
Clean moonstones with a soft, damp cloth only. No ultrasonic cleaners, no steam, no harsh chemicals. Store separately from harder gemstones. For detailed cleaning guidance, see our vintage jewelry care guide.
Cultural and Historical Significance
In Hindu tradition, moonstone is considered sacred. It is associated with the moon deity Chandra and believed to be formed from solidified moonbeams. Ancient Romans believed moonstones were formed from frozen moonlight. In many cultures, moonstone is associated with intuition, emotional balance, and feminine energy. It is the traditional birthstone for June alongside pearl and alexandrite.
During the Art Nouveau period (1890-1910), moonstones experienced a significant revival in fine jewelry. Rene Lalique and other Art Nouveau designers prized moonstone for its ethereal quality, and Art Nouveau moonstone pieces are highly collectible today.
Opals: Fire in Stone
What Makes Opals Unique
Opals are in a category by themselves. They are not crystalline like most gemstones. Instead, opal is an amorphous form of hydrated silica (SiO2 with 3-21% water content). The famous "play of color" in precious opals is caused by light diffracting through a regular three-dimensional array of microscopic silica spheres within the stone.
When the spheres are the right size and arranged in a sufficiently regular pattern, they diffract white light into its spectral colors. Different sphere sizes produce different colors: smaller spheres diffract blue and green, while larger spheres can produce the full spectrum including orange and red. A stone that displays red play of color is more valuable than one showing only blue and green, because the larger spheres required for red diffraction are rarer.
Types of Opal
- Black Opal: The most valuable variety. Dark body color (dark gray to black) makes the play of color appear more vivid and dramatic. The world's finest black opals come from Lightning Ridge, Australia. Top specimens can exceed $10,000 per carat.
- White/Light Opal: White or light body color with play of color. The most common variety, primarily from Coober Pedy, Australia. More affordable than black opal.
- Boulder Opal: Thin seams of precious opal formed within ironstone host rock. The dark ironstone backing enhances the play of color, similar to black opal but at lower prices. From Queensland, Australia.
- Fire Opal: Transparent to translucent opal with a warm body color (yellow, orange, red). May or may not show play of color. The finest come from Mexico. Fire opal without play of color is less expensive but can be strikingly beautiful.
- Ethiopian Opal: A relatively recent discovery (2008) that has disrupted the opal market. Ethiopian opals can be transparent with vivid play of color. They are more affordable than Australian opals of similar appearance but are also more porous and susceptible to water absorption (they can temporarily turn translucent when wet).
Care Considerations
Opals require more careful handling than almost any other gemstone. At 5.5-6.5 on the Mohs scale, they are soft and scratch easily. More importantly, their water content makes them vulnerable to dehydration (which causes crazing, a network of fine surface cracks) and thermal shock.
- Never use ultrasonic or steam cleaners on opals.
- Avoid sudden temperature changes (walking from an air-conditioned building into summer heat, for example).
- Do not store opals in extremely dry environments. A small piece of damp cotton in the storage container helps.
- Remove opal rings before washing hands, cooking, or cleaning.
- Opal doublets and triplets (thin opal slices backed with dark material and sometimes topped with a clear cap) should never be soaked in water, as it can seep between the layers and cause separation.
The "Bad Luck" Myth
The superstition that opals bring bad luck traces primarily to a 19th-century novel by Sir Walter Scott, not to any genuine cultural tradition. For most of human history, opals were considered among the luckiest of stones. In ancient Rome, opal was called "opalus," meaning "precious stone," and it was considered the most valuable gem of all. Queen Victoria wore opals throughout her reign and gave them as gifts to her daughters, actively working to combat the superstition that had briefly damaged the opal trade.
Labradorite: The Aurora Stone
Properties and Appeal
Labradorite is a plagioclase feldspar that displays labradorescence, a stunning play of iridescent color that flashes across the stone's surface. The most common flash colors are blue and green, but exceptional specimens show the full spectrum: gold, copper, purple, and even red. This phenomenon, like moonstone's adularescence, is caused by light interference between thin layers within the mineral's structure.
Labradorite was first formally identified in Labrador, Canada, in 1770. The Inuit people of the region had long associated the stone with the aurora borealis, believing that the Northern Lights were trapped within the rock.
Spectrolite
Spectrolite is a premium variety of labradorite discovered in Finland in 1940. It displays the full color spectrum with exceptional intensity and a dark base color that makes the flashes more vivid. Finnish spectrolite is significantly rarer and more expensive than standard labradorite.
Care and Use
Labradorite scores 6-6.5 on the Mohs scale. Like moonstone, it has perfect cleavage in two directions, meaning it can split along crystal planes if struck in just the right (wrong) direction. Bezel settings are recommended for rings. Clean with warm soapy water and a soft cloth.
Tourmaline: The Rainbow Gem
Why Tourmaline Is Special
Tourmaline is one of the most color-diverse gemstones on earth. It occurs in virtually every color: pink, red (rubellite), green (chrome tourmaline, verdelite), blue (indicolite), watermelon (pink center with green rim), neon blue-green (Paraiba), yellow, brown, black, and colorless. Some tourmalines display two or more colors in a single crystal.
Tourmaline scores 7-7.5 on the Mohs scale, making it durable enough for all types of jewelry. It is also piezoelectric, meaning it generates an electrical charge when heated or subjected to pressure. Benjamin Franklin used tourmaline in his early experiments with electricity.
The Paraiba Phenomenon
In 1989, a new variety of tourmaline was discovered in the Brazilian state of Paraiba. These stones displayed an unprecedented neon blue-green color caused by trace amounts of copper. The color was unlike anything previously seen in the gemstone world: an electric, almost glowing turquoise that seemed to emit its own light.
Paraiba tourmalines are among the most expensive gemstones per carat. Fine Brazilian Paraiba stones regularly sell for $20,000-$50,000 per carat. Similar copper-bearing tourmalines were later discovered in Mozambique and Nigeria, but Brazilian Paraibas command the highest premiums.
Care
Tourmaline is relatively easy to care for. Warm soapy water and a soft brush work well. Ultrasonic cleaners are generally safe for tourmaline without liquid inclusions. Avoid steam cleaning, as rapid temperature changes can cause thermal shock in stones with certain types of inclusions.
Alexandrite: The Chameleon
The Color Change Phenomenon
Alexandrite is a variety of chrysoberyl that displays one of the most remarkable optical phenomena in the gemstone world: a dramatic color change depending on the light source. In daylight (which is rich in blue wavelengths), alexandrite appears green to bluish-green. Under incandescent light (which is rich in red wavelengths), the same stone appears red to purplish-red.
This color change is caused by chromium ions in the crystal structure that absorb light in a narrow band between green and red. Daylight emphasizes the green transmission, while incandescent light emphasizes the red. Fine alexandrites show a complete color change, going from a vivid green to a vivid red with minimal brownish or grayish modifying hues.
Rarity and Value
Natural alexandrite with a strong color change is extraordinarily rare. The original deposits in Russia's Ural Mountains, discovered in 1830, were largely exhausted by the late 1800s. Modern sources include Sri Lanka, Brazil, and East Africa, but fine-quality specimens from any source are uncommon.
Alexandrite prices reflect this rarity. Fine Russian alexandrites with a strong color change and good clarity regularly sell for $30,000-$70,000 per carat for stones over 1 carat. Good-quality Brazilian and Sri Lankan alexandrites range from $5,000-$20,000 per carat. Lesser quality stones with a partial color change are more affordable but less impressive.
Care
At 8.5 on the Mohs scale, alexandrite is extremely durable. It is safe for ultrasonic cleaning, steam cleaning, and everyday wear. This is one of the few unconventional gems that is genuinely suitable for daily-wear rings.
Why Alternative Gems Are Gaining Popularity
Several converging trends are driving interest in unconventional gemstones:
- Individuality: Younger buyers increasingly want jewelry that expresses personal identity rather than conforming to the diamond engagement ring convention. A moonstone or opal ring is distinctive in a way that a round brilliant diamond is not.
- Value: Most alternative gemstones offer dramatically more visual impact per dollar than diamonds. A stunning 3-carat moonstone costs a fraction of a 3-carat diamond.
- Ethical concerns: Some buyers seek to avoid the ethical complexities of the diamond supply chain. While ethical issues exist in all mining, alternative gems often come from smaller-scale, more traceable operations.
- Social media visibility: Platforms like Instagram and TikTok have given alternative gems unprecedented visibility. Opals and moonstones photograph and film beautifully, and viral posts have introduced millions of people to stones they never knew existed.
- Spiritual and wellness interest: Growing interest in crystal healing and metaphysical properties has increased demand for stones traditionally associated with specific energies and intentions.
Metaphysical Properties: A Balanced Perspective
Many of our customers at D($)MVVintage are interested in the metaphysical and energetic properties traditionally associated with gemstones. We respect this interest while being transparent that these associations are rooted in cultural tradition and personal belief, not in scientific evidence.
Here are the traditional associations for each stone discussed in this guide:
- Moonstone: Intuition, emotional balance, new beginnings. Associated with the crown and third eye chakras. Traditionally connected to feminine energy and the lunar cycle.
- Opal: Creativity, inspiration, emotional expression. Believed to amplify emotions and encourage spontaneity. Associated with the heart and crown chakras.
- Labradorite: Transformation, protection, inner strength. Often described as a stone of magic and spiritual growth. Associated with the throat and third eye chakras.
- Tourmaline: Varies by color. Black tourmaline is associated with grounding and protection. Pink tourmaline with love and compassion. Green tourmaline with abundance and vitality.
- Alexandrite: Balance, self-discipline, and joy. Its color-change nature is symbolically connected to adaptability and finding balance between different aspects of life.
Whether you are drawn to a stone for its metaphysical properties, its visual beauty, or both, the choice is deeply personal. We encourage our customers to choose pieces that resonate with them on whatever level feels authentic.
Quick Reference Chart
| Stone | Hardness | Optical Effect | Ring Suitable? | Price Range/ct |
|---|---|---|---|---|
| Moonstone | 6-6.5 | Adularescence | With care (bezel) | $5-$500 |
| Opal (black) | 5.5-6.5 | Play of color | With great care | $50-$10,000+ |
| Labradorite | 6-6.5 | Labradorescence | With care (bezel) | $5-$200 |
| Tourmaline | 7-7.5 | None (color variety) | Yes | $50-$50,000 |
| Alexandrite | 8.5 | Color change | Yes | $500-$70,000+ |
Final Thoughts
The gemstone world is vast, and diamonds are only one chapter in a much longer story. Moonstones, opals, tourmalines, and their unconventional cousins offer visual experiences, cultural depth, and personal significance that no single stone type can provide.
At D($)MVVintage, alternative gemstones are a core part of our identity. We source moonstones, opals, and unique gems from trusted dealers and personal travels, selecting each stone for its beauty, quality, and energy. When you hold one of our moonstone pieces, you will understand why these stones have captivated people for thousands of years. Some things cannot be explained in words. You have to see the glow for yourself.