By the time I got to the last amethyst stalactite slice, it was clearly the smallest of the three. It could have become a modest third necklace. Instead I decided to wrap it around a wrist.

This collection already had two stalactite necklaces, the horizontal Awakening and the vertical Cascade. A third one on a chain would have started to feel like a repetition. The smaller slice gave me a way out. It was the right scale to sit on a cuff, close to the skin, where you catch it in glimpses instead of seeing it head on. So I set out to build something the other two could be worn with, or that could hold its own alone as a piece of arm candy. I named it Ember because that is what it is: the smallest, warmest coal of the three, still glowing.

The materials

Ember is built on a custom cuff frame I fabricated from heavy 10-gauge 14k gold-filled wire, with the same small folded 24k gold vermeil circle I use to cradle the stalactite. The centerpiece is that last, smallest amethyst geode slice.

The cluster leads with light purple amethyst in asymmetric shield cuts, chosen because their jutting, uneven shapes mirror the raw edges of the stalactite itself. Around them I set fancy-cut amethyst, softer "Scorolite" amethyst, aquamarine in irregular shapes and flat briolettes, tiny sapphires in every color, and akoya keshi pearls. Framing the whole thing are four larger flanking stones, two grey moonstone rectangles and two light amethysts, threaded straight through the cuff.

Gemstone science: one geode, three slices

All three stalactite slices in this collection were cut from the same kind of formation: an amethyst stalactite grown drop by drop inside an ancient volcanic geode, almost always from Uruguay or southern Brazil. Silica-rich water seeps into a pocket in cooling basalt and builds a hanging spike, filling first with a banded agate eye, then ringed by a halo of pale purple amethyst crystal. Amethyst is purple quartz, colored by traces of iron and natural irradiation, and it sits at a 7 on the Mohs hardness scale. What matters for a cuff is that each slice is cut to a different size from the same rare material, so the smallest one carries the exact same geology as its larger siblings, just scaled to the wrist. You can read more in my amethyst stalactite guide.

Andrea Li

andreali.com

Gemstone Science: Amethyst Stalactite Geode

A sliced amethyst stalactite geode, its banded agate eye ringed by a halo of radiating purple amethyst crystals and a raw druzy rim

One geode, sliced · a sealed landscape no two of which are alike

How It Forms

A pocket opens inside cooling volcanic basalt, and silica-rich water seeps in.

Drop by drop, a stalactite grows hanging downward, exactly the way one grows in a cave.

The center fills first with banded agate, then amethyst crystals grow outward, finished by a raw druzy rim.

Ancient volcanic pocket in cooling basalt · drop-by-drop stalactite formation

Anatomy of a Slice

Microcrystalline Agate Center

The banded eye at the heart of the slice, the first mineral to fill the pocket.

Amethyst Crystals Halo

Larger purple crystals growing outward into the open space, forming the ring of color.

Raw Druzy Rim

The sparkling crystal-tipped edge that finishes the formation, left exposed as the feature.

The Facts

Origin

Uruguay and southern Brazil, from ancient volcanic geodes.

Mineral

Purple quartz, the violet variety of crystalline quartz.

Color Cause

Traces of iron plus natural irradiation deep in the earth.

Hardness

7 on the Mohs scale, durable enough for regular wear.

Unique Patterns

The pattern forms entirely by chance. No two slices are ever the same.

Truly One of a Kind

Drawn once by the earth over millions of years, it can never recur.

Learn more at andreali.com

Andrea Li

The creative process

A cuff has a demand a necklace does not: it has to open and close comfortably around a wrist, over and over, without fighting you. So I fabricated the frame from heavy 10-gauge wire and soldered the ends at an angle to leave a wide opening, then rounded and high-polished those ends so the cuff slips on and off easily and never catches. Only after the frame was sound did I set the stone.

The stalactite went in the same way its sisters did, and this shared technique is the signature that ties the trio together. I fold a single 24k vermeil circle over a wooden dowel, widen its one anchor hole with a diamond-tipped reamer, and thread gold-filled wire through it again and again to weave a web that locks the frame to the slice. Then I set the cluster over the top so the stones appear to grow out of the stone. I let the asymmetric amethyst shield cuts jut out first, echoing the stalactite's raw edges, and then vine into a fuller cluster that reads as if it is creeping across the surface of the geode.

The moment it tested me

The hardest part of Ember was the four flanking stones, and specifically the holes I had to drill for them.

I wanted two large grey moonstone rectangles and two light amethysts to sit outside the main cluster, threaded through the body of the cuff itself so the whole bracelet reads as one continuous story rather than a centerpiece with empty metal on either side. To thread a heavy-gauge head pin through each of those large stones and anchor it to the cuff, the holes on both sides had to align almost perfectly. There is very little forgiveness in that. Drill one a hair off and the head pin binds, or the stone sits crooked. It took patience and a steady hand to get all four to line up and pull the cuff together into a single, integrated piece.

Why this one is truly one of a kind

Like its two sisters, Ember is built around a slice that was unrepeatable before it reached my bench, and the cluster and cuff are matched to that one stone alone. But Ember carries something the necklaces do not: it is the smallest of a set of three cut from the same material, the last of its kind in this collection. When these three stalactites are gone, there will be no fourth. That is the whole idea behind Second Light, the pastel work I continue here from Tamar: I buy the stones I fall for, and I keep designing until each one has found the single piece it was always meant for.

Questions

What is an amethyst stalactite slice?

It is a cross-section cut from an amethyst stalactite, a formation grown drop by drop inside ancient volcanic geodes, mostly from Uruguay and southern Brazil. Each slice shows a banded agate eye at the center, ringed by a halo of pale purple amethyst crystal. Because the pattern forms entirely by chance, no two slices are ever the same. You can read more in my amethyst stalactite guide.

Is a gemstone cuff comfortable to wear every day?

This cuff is fabricated from heavy 14k gold-filled wire with an angled opening and rounded, polished ends, so it slips on and off easily and sits securely. Amethyst and moonstone are best treated gently, so a cuff like this is made for real wear while still being one of a kind.

Is this cuff one of a kind, and can I commission something similar?

Yes. It is built around the smallest of three amethyst stalactite slices and will never be repeated. If you would like something made in the same spirit, you can begin a commission through the custom shop.

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Cascade: The Amethyst Stalactite Necklace That Falls Like Water

July 2, 2026Tamar: Second LightAndrea Li

When I finished the first amethyst stalactite necklace in this collection, I knew there had to be a second one. Not a copy. A counterpart.

The first piece, the one I called Awakening, lies on its side like a small landscape, calm and horizontal, with the gemstone cluster gathered tight at one end. I had another slice from the same rare group of stones, and it wanted to do the opposite. It wanted to fall. So instead of turning this one on its side, I hung it the way a stalactite actually grows in the dark: pointing down, reaching toward the ground, drop by drop. Everything about this necklace came from that single decision to let the stone descend.

The materials

The heart of the piece is an amethyst geode stalactite slice, set downward into large 24k gold vermeil circles I fold by hand. Because the stone is substantial, it needed a chain with equal presence, so I built the body from a chevron-patterned 14k gold-filled chain, layered in three rows so it reads as one thick, unified band.

Around the slice I grew a cluster of coordinating pastel stones: fancy-cut amethyst, mixed beryl in aquamarine, morganite and heliodor, aquamarine briolettes, tiny sapphires in every color from opaque pink to green, a touch of green topaz, grey moonstone, kunzite, and akoya keshi pearls. The chain drops are anchored with green amethyst, and the lighter edge of the setting is finished in tiny sparkling mystic labradorite. Every stone was chosen to echo the soft purples and smoky greys held inside the slice itself.

Gemstone science: a stalactite, set the way it grew

An amethyst stalactite slice is a cross-section cut from a formation that grew hanging inside an ancient volcanic geode, almost always from Uruguay or southern Brazil. Silica-rich water seeps into a pocket in cooling basalt and, drop by drop, builds a hanging spike exactly the way a stalactite grows in a cave. The center fills first with microcrystalline agate, the banded eye you see, and larger amethyst crystals grow outward around it into the open space, forming the pale purple halo, often finished with a rim of raw druzy. Amethyst is simply purple quartz, colored by traces of iron and natural irradiation, and it sits at a 7 on the Mohs hardness scale. Because the pattern forms entirely by chance, no two slices are ever the same. Setting this one point-down lets it hang the way it first formed, millions of years ago, in the dark.

Andrea Li

andreali.com

Gemstone Science: Amethyst Stalactite Geode

One geode, sliced · a sealed landscape no two of which are alike

How It Forms

A pocket opens inside cooling volcanic basalt, and silica-rich water seeps in.

Drop by drop, a stalactite grows hanging downward, exactly the way one grows in a cave.

The center fills first with banded agate, then amethyst crystals grow outward, finished by a raw druzy rim.

Ancient volcanic pocket in cooling basalt · drop-by-drop stalactite formation

Anatomy of a Slice

Microcrystalline Agate Center

The banded eye at the heart of the slice, the first mineral to fill the pocket.

Amethyst Crystals Halo

Larger purple crystals growing outward into the open space, forming the ring of color.

Raw Druzy Rim

The sparkling crystal-tipped edge that finishes the formation, left exposed as the feature.

The Facts

Origin

Uruguay and southern Brazil, from ancient volcanic geodes.

Mineral

Purple quartz, the violet variety of crystalline quartz.

Color Cause

Traces of iron plus natural irradiation deep in the earth.

Hardness

7 on the Mohs scale, durable enough for regular wear.

Unique Patterns

The pattern forms entirely by chance. No two slices are ever the same.

Truly One of a Kind

Drawn once by the earth over millions of years, it can never recur.

Learn more at andreali.com

Andrea Li

The creative process

Always, with these stalactites, the hardest part is invisible in the finished piece: building the structure everything else attaches to. I use large 24k vermeil circles that I gently fold in half over a wooden dowel to get a clean crease, and I cradle the slice inside that fold. There is only one hole to anchor the whole frame, so I widen it as much as I dare with a diamond-tipped reamer, then thread layer after layer of gold-filled wire through it to weave a web that locks the vermeil circles in place. Only then can the gemstone setting begin, covering the surface of the circles so completely that the stones look like they are growing straight out of the stone.

Here I made a choice about restraint. I clustered gemstones along only half of the vermeil circle and edged the rest of the lighter left side in nothing but tiny mystic labradorite, keeping it deliberately minimal so the fully clustered right side could sing. Then I cascaded that cluster downward, letting it spill past the edge of the stalactite to exactly where the three chains reappear at the bottom right, so the pendant and the waterfall drop read as one seamless line rather than two separate ideas.

The chains were their own puzzle. I wanted them to waterfall off the bottom of the pendant into a dramatic triple drop, extending the line of the stone and giving it room to breathe. To make three chains lay correctly around a neck, I used a two-strand bar clasp and drilled an extra hole in the middle to carry the third chain, then cut the chains to slightly varied lengths, shorter on the inside and longer on the outside, so they would curve cleanly instead of tangling.

The moment it changed

The first version of the chain drops was wrong, and I knew it the moment I held it up.

I had originally anchored each of the three drops with a green rutilated quartz teardrop, clear quartz shot through with fine green needles. On paper it made sense. In the hand it was too much: the green was oppressive, and it clashed with the soft, muted palette of the rest of the stones. So I took them off and switched to simple-cut green amethyst rectangles instead. Their color was quieter, their rawness echoed the stalactite and the other stones, and suddenly they belonged to the chorus rather than shouting over it. That one swap is the difference between a piece that fights itself and a piece that resolves.

Why this one is truly one of a kind

The slice was unrepeatable before it ever reached my bench. Its banded eye, its purple halo, the exact way the crystals grew, all of it was drawn once by the earth and will never be drawn the same way again. When I build a cluster and a cascade of chain to match one stone, I am matching a composition that cannot recur. Cascade is the vertical, dramatic sister to Awakening, and together with the Ember cuff they complete a three-piece story I could only tell with these three particular slices.

Questions

What is an amethyst stalactite slice?

It is a cross-section cut from an amethyst stalactite, a formation that grew drop by drop hanging inside an ancient volcanic geode, mostly from Uruguay and southern Brazil. Each slice shows a banded agate eye at the center, ringed by a halo of pale purple amethyst crystal, often finished with a rim of raw druzy. Because the pattern forms entirely by chance, no two slices are ever the same. You can read more in my amethyst stalactite guide.

Is amethyst durable enough for everyday wear?

Amethyst is purple quartz, colored by traces of iron and natural irradiation, and it sits at a 7 on the Mohs hardness scale, which is durable for regular wear. The raw druzy rim of a stalactite slice is its most delicate part, so it is best treated with a little care.

Is this necklace one of a kind, and can I commission something similar?

Yes. This exact slice, cluster, and cascade of chain will never be repeated. If you would like something made in the same spirit, you can begin a commission through the custom shop.

Discover

Jewelry that feels like you.

Two minutes. The quiz tells me how you want jewelry to feel in your life, and the messages that follow walk you through pieces I think you'll love.

Take the Style Quiz

Two minutes. I take it from there.

Stay Close

Love what you see? Keep finding us.

Add Andrea Li Designs as a Preferred Source

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The Stone That Sat in My Drawer for Years: An Amethyst Stalactite Necklace

June 19, 2026Tamar: Second LightAndrea Li

Some years ago I walked out of one of my favorite gem shows with my budget already gone.

The show is held at a place those of us who go every year just call the Holidome. I was leaving a little reluctantly, the way you do when you are not ready for a show to be over. On my way out I passed a strand of stones unlike anything I had ever seen, and I stopped. I had to have them. I bought them on the spot with money I did not really have left to spend.

Then they sat in my drawer. Year after year, while a few of their siblings found their way into other pieces, this strand mostly waited for a design worthy of how strange and beautiful they were. This necklace is that design, finally.

What an amethyst stalactite slice actually is

The stone at the heart of this necklace is an amethyst stalactite slice, and it is one of the most unusual stones in all of fine jewelry. Instead of a single clear gem, you get a tiny sealed landscape: a concentric eye of banded agate at the center, ringed by a halo of pale purple amethyst crystal, often finished with a rim of sparkling raw druzy. People look at them and see different things. An eye. A flower. A small planet.

Andrea Li

Gemstone Profile: Amethyst Stalactite

A one-of-a-kind slice · the flower in the stone

The Formation

Formed over millennia in volcanic pockets and mineral-rich caves. A unique stalactitic crystal growth, drop by drop.

Anatomy

A distinct core, often agate, followed by concentric bands, then radiating layers of amethyst crystals.

Color & Luster

Ranges from ethereal lavender to deep violet, with natural color zoning. A bright, vitreous luster.

Rarity & Unicity

A rare and coveted formation. Cross-sections resemble a natural flower or starburst. A one-of-a-kind natural design.

Symbolism

Commonly associated with clarity, calm energy, and deep grounding. Considered a stone of time and growth.

Learn more at andreali.com

Andrea Li

Gemstone science: a geode, sliced

Amethyst stalactite slices come almost entirely from the ancient volcanic geodes of Uruguay and southern Brazil. Silica-rich water seeps into a pocket in cooling basalt and, drop by drop, builds a hanging stalactite the same way a cave stalactite grows. The center fills first with microcrystalline agate, the banded eye you see. Around it, larger amethyst crystals grow outward into the open space, building the purple halo. Slice the finished stalactite crosswise and that whole hidden history is revealed in rings. Amethyst is simply purple quartz, colored by traces of iron and natural irradiation, and it sits at a 7 on the Mohs hardness scale. Because the pattern forms entirely by chance, no two slices are ever the same.

Building a piece around the stone

I chose one slice from the strand and turned it on its side to run horizontally, like a small landscape, for a bar-style necklace.

I do not bezel a stone like this. I wired a small 24k gold vermeil structure by hand to cradle the slice and to give me something to build on. Then I grew a gemstone cluster up and out of that armature, the way crystals themselves grow, so the cluster seems to spill from the raw amethyst edge rather than sit politely beside it. I left that raw druzy rim exposed on purpose. It is the most delicate part of the stone, those tiny crystal tips, but hiding it would have hidden the entire reason to use the slice.

They belong in a pastel collection because the stone is already pastel: a washed lilac crystal wrapped around a smoky agate eye. I do not have to add drama to it. I build a cluster of coordinating soft stones around it, anchor it with a single flat green rutilated quartz teardrop, and let the slice lead.

One thing I have learned the hard way: widen the hole through the slice before you start. I thread my own wire through that channel several times to lock the vermeil structure in place, and it fills up faster than you expect. The first time, I left myself almost no room to pass the 12-gauge head pin that connects the chain, and I had to ease it through with patient, firm pressure and a little water to lubricate the channel. Now I make the room up front.

Close-up of a gold paperclip chain necklace with an amethyst stalactite slice pendant and clustered pastel gemstones.

The chain had to earn its place

A pendant with this much presence needed a chain that could hold its own. Anything delicate would have looked apologetic next to a stone like this. I had a large-link 14k gold-filled chain in my stock that balanced the weight of the slice perfectly, and I finished it with a large toggle clasp in the same confident scale. The chain is part of the statement, not an afterthought to it.

Why this one is truly one of a kind

The slice was unrepeatable before it ever reached my bench. The eye at its center, the rings around it, the depth of its purple, all of it was drawn once by the earth over millions of years and will never be drawn the same way again. When I build a cluster to match one, I am matching a composition that cannot recur.

That is the whole idea behind this collection, which continues the pastel work I began with Tamar. I buy the stones I fall for, and I keep designing until each one has found the single piece it was always meant for. This geode waited years for that piece. It was worth the wait.

Previous work with Amethyst Stalactite:

Statement necklace with green gemstone beads and a crystal slice pendant, arranged on a white background with soft shadow.

Close-up of a pastel gemstone statement necklace with amethyst slices, soft green stones, and gold accents on a white background.

  Questions
  What is an amethyst stalactite slice?It is a cross-section cut from an amethyst stalactite, a formation grown drop by drop inside ancient volcanic geodes, mostly from Uruguay and southern Brazil. Each slice shows a banded agate eye at the center, ringed by a halo of pale purple amethyst crystal, often finished with a rim of raw druzy. Because the pattern forms entirely by chance, no two slices are ever the same.

  Is amethyst durable enough for everyday wear?Amethyst is purple quartz, colored by traces of iron and natural irradiation, and it sits at a 7 on the Mohs hardness scale, durable for regular wear. The exposed raw druzy rim is the most delicate part of this stone, so it is best treated gently.

  Is this necklace one of a kind, and can I commission something similar?Yes. The slice was unrepeatable before it ever reached the bench, and the cluster is matched to it alone. If you would like something made in the same spirit, you can begin a commission through the custom shop.