What pool coping is
Coping is the run of pieces that caps the pool edge, and it is the only element that is structural, visual and touched all at once. It is what a swimmer's hands grab on the way out and what the eye follows around the whole shape.
The profiles here are bullnose, double bullnose and a modern square edge. A bullnose rounds the top outer edge so there is nothing sharp at the waterline; a double bullnose rounds both edges, which is what a freestanding spa edge or a raised wall needs; a modern edge keeps the arris square for a contemporary line.
Coping thickness is written in centimetres
The coping listings carry 3 cm and 5 cm where a tile listing would give an inch fraction. That is the convention the stone trade uses for this piece specifically. A 3 cm coping is the common one and a 5 cm gives a heavier visual edge and a deeper shadow line under it.
That figure is separate from the paver thickness behind it. The coping and the deck finish at a level fixed in the pool design, so both depths are already decided by the time either piece is chosen, and that is the reason the coping thickness appears on the listing at all.
Travertine, porcelain and marble
Travertine carries the largest share, then porcelain, then marble and limestone. Those three answer a pool differently and the difference is not durability.
Travertine is the traditional pool stone: porous, textured, and pale enough to stay comfortable in sun. Porcelain arrives as a 20 mm paver that takes up no water at all. Marble gives the finest surface and the brightest deck. The travertine paver and outdoor porcelain pages cover each material outdoors.
Pale surfaces and the sun
This is the property that decides most pool decks and it has nothing to do with taste. A pale surface reflects more sunlight than a dark one and reaches a lower temperature in the same conditions, which is why beige, ivory, silver and gray dominate the color list here and why dark pavers are rare around water.
It is also why travertine and light limestone have been the pool stones of the Mediterranean for centuries. The stone was local, and it was the one somebody could stand on at midday.
Tumbled is the largest finish group
Tumbled leads, then matte, with natural, fine picked, sandblasted and brushed faces behind them. Every one of those is a texture instead of a polish, and a pool deck is the one place in this catalog where a polished surface almost never appears.
Tumbling rounds the edges of a piece as well as breaking up the face, so a tumbled paver reads as older and the joints between pieces read as wider. Fine picked and sandblasted work the face without touching the edge, which keeps a crisper line.
Thickness bands follow the material
Three groups carry the range: 1 1/4 inch, 20 mm and a 2 inch group. The first is the standard travertine and marble paver, the second is the porcelain, and the third is the heavy stone used where a paver has to span more.
A paver at these depths carries its own load across whatever is underneath it, and no interior tile at 3/8 inch is asked to do that. Porcelain pavers covers the fired side of that.
Waterline mosaic and the spa
The mosaic group here is small and it is doing one specific job: the band at the waterline, and the inside of a spa. Those surfaces are wet continuously where a deck is wet occasionally, and they are read at very close range from inside the water.
A waterline band is also the one surface here read from inside the water, where the light arrives through it instead of onto it. That is the reason glass turns up in the mosaic group and nowhere else on this page. Pool mosaic tile covers that side of it, including the pebble sheets that go on a spa floor.
Formats and the pattern sets
12x12, 12x24, 24x24 and 16x24 lead, with a French pattern set listed under Various because it is four sizes supplied together as a repeating block.
A pool surround is rarely a simple rectangle, so a pattern set is doing something a single size cannot: it absorbs the curve of a pool without every piece having to be cut to it.