What Is Travertine Made Of? How It Is Formed
Quick answerTravertine is made mostly of calcium carbonate, like limestone. It forms when mineral-rich spring water, often hot, releases calcium carbonate as it reaches the surface, building layers over thousands of years. Gas bubbles and plant material leave the holes that give travertine its look.
What is travertine made of? Travertine is a natural stone made mostly of calcium carbonate, the same mineral family as limestone and marble. It forms when mineral-rich water, often warm or hot spring water, leaves layers of that mineral behind over a very long time. This guide explains how travertine is formed, why it has those signature holes, how it gets from the quarry to your floor, and what travertine tile is made of. For the basics, see what is travertine and the travertine care hub, or browse travertine tile and order sample tiles.
What Is Travertine Made Of?
Travertine is a form of limestone. It is made mainly of calcium carbonate, with small amounts of other minerals that give it color. Iron can bring warm browns, golds and reds, while cleaner stone stays ivory and cream. That is why you see everything from Ivory Light to Noce and Walnut. Compare it with its cousins in limestone vs travertine and travertine vs marble.
How Is Travertine Formed?
Travertine forms in and around springs, rivers and caves where water carries dissolved calcium carbonate. Here is the simple version.
- Water dissolves limestone as it moves underground, picking up minerals and carbon dioxide.
- The water rises at a hot spring or cooler spring and meets the open air.
- Gas escapes, the water can no longer hold as much mineral, and calcium carbonate settles out.
- Layers build up around plants, moss and rock, a little at a time, over thousands of years.
- Pressure hardens the deposits into solid stone.
Why Travertine Has Holes
As the minerals settle, gas bubbles and bits of plant material can leave tiny pockets behind. These holes and bands are the signature of travertine. Many tiles have the holes filled at the factory with a color-matched material, and others are left open for a rustic look. See filled vs unfilled travertine and filled and honed travertine.
Travertine vs Marble and Limestone
All three come from calcium carbonate, but they form differently. Marble starts as limestone and changes under heat and pressure, as in how marble is formed. Travertine is deposited by mineral water, often at springs. Learn more about the stone families in how stone is formed and stone types.
Hot Springs and Layers
Many well-known travertine deposits are linked to hot springs, because warm water carries more dissolved mineral and drops it quickly when it cools and meets the air. That is why travertine often shows soft horizontal bands: each band is a chapter in the stone's growth. The bands, the color shifts and the holes are what make a piece unmistakably travertine, and they are why no two tiles match exactly. If you need pieces that look alike, try find a matching natural stone tile.
Travertine Quarry: From Stone Block to Tile
A travertine quarry is where large blocks are cut from the deposits. Blocks are sawn into slabs, then cut into tile sizes. Quarries around the world produce travertine in different colors, and the look depends on the deposit. Because the stone is natural, every block and tile can vary.
How a Block Becomes Tile
After sawing, the stone can be finished in different ways: honed for a soft matte, polished for shine, tumbled for a worn, rustic edge, brushed, chiseled or split-face. Cross-cut and vein-cut describe the direction the block is sliced, which changes the pattern. See stone tile finishes, honed travertine, tumbled travertine, polished travertine, chiseled travertine and split-face travertine.
What Are Travertine Tiles Made Of?
Travertine tile is simply cut and finished natural stone. There is no print and no resin body, so what you see on the surface runs through the tile. Some tiles are filled with a color-matched filler or resin in the natural holes, and the rest is the stone itself. Mosaics are small pieces of the same stone set on a mesh sheet. Browse travertine mosaics, travertine floor tile and travertine trim, or see the mosaic travertine guide.
What This Means for Your Home
Because travertine is a softer, porous natural stone, it should be sealed and cleaned with stone-safe products. Read the travertine sealing guide, travertine stains guide and travertine repair guide. It works in many rooms: kitchens, bathrooms, showers and pools. Natural stone needs sealing in wet areas and a proper waterproofing system, as your installer specifies. For outdoors, see travertine pavers and pool coping and outdoor tile.
Ready to See Real Travertine?
Hold a piece and you will see the layers. Explore the stone encyclopedia, check new arrivals or Scabos, contact us with questions, or visit Anaheim pickup. Any 5 samples are $25 and ship free.
Common questions
What is travertine made of?
Travertine is made mainly of calcium carbonate, with small amounts of other minerals that add color. It is a form of limestone deposited by mineral-rich water.
How is travertine formed?
Water carrying dissolved minerals rises at springs, loses gas and drops calcium carbonate in layers. Over thousands of years those deposits harden into stone.
What are travertine tiles made of?
Travertine tiles are cut and finished natural stone, so the color and pattern you see run through the tile. Some have their natural holes filled with a color-matched filler.
Is travertine tile made of real stone or a man-made material?
It is real natural stone. There is no printed surface or resin body, and each tile varies a little from the next.
What is a travertine quarry?
A travertine quarry is where large blocks of the stone are cut from natural deposits. The blocks are sawn into slabs and then cut and finished into tile.
Why does travertine have holes?
Gas bubbles and bits of plant material left tiny pockets as the stone formed. They can be filled at the factory or left open for a rustic look.
Is travertine a type of limestone?
Yes, travertine is a kind of limestone, deposited by mineral water. It is usually denser and more layered than common limestone.
Is travertine the same as marble?
No. Both are made of calcium carbonate, but marble forms when limestone is changed by heat and pressure, while travertine is deposited by mineral-rich water.
Why does travertine come in different colors?
Small amounts of minerals such as iron, plus the conditions where it formed, create ivory, gold, walnut and silver tones.
What is the difference between cross-cut and vein-cut travertine?
It is the direction the block is sliced. Vein-cut shows long, linear banding, while cross-cut shows a softer, cloudier pattern.
Does the way travertine is formed make it soft?
Travertine is a softer, porous natural stone, softer than granite, so sealing and gentle cleaning are recommended.
Can I see real travertine before I buy?
Yes. Any 5 samples are $25 and ship free, so you can see the layers, holes and color in your own light.