Limestone from Italy

Blue Siena

Blue Siena is an Italian limestone with a dramatically light grey to white ground tone and powerfully fluid golden-honey and subtly bluish vein tracks — an exceptionally elegant Italian pictorial composition with a Calacatta-like vein dramaturgy. An acid-sensitive limestone class for prestige vanity tops and wall cladding.

An Italian carbonate limestone with a light grey-white base tone and powerfully fluid vein courses in golden honey and subtly bluish tones. The vein formation mechanism resembles that of the famous Calacatta marble — calcitic, iron-bearing healing zones along former fissures. Mohs hardness approx. 3, acid-sensitive.

Limestone Italy
Available as: Slabs

Other trade names: RO-02-275

About Blue Siena

Blue Siena is an Italian limestone. Italy has for centuries been one of the world's most important exporters of building stone, with extensive limestone, marble and travertine deposits. The Siena region (Tuscany) is particularly known for its warm Tuscan building stones.

Geologically it is a classic carbonate limestone with a powerfully animated vein composition. The light grey to whitish ground tone is crossed by dramatically flowing secondary mineralisation veins in golden-honey and subtly bluish tones — the formation mechanism of the veining resembles that of the famous Calacatta marble (calcitic, iron-bearing healing zones along former fissures).

In stock

Current availability from our warehouse.

6 slabs in stock · plus 1 block

Thicknesses: 2 cm · Finishes: Polished · Available as: Slabs

Updated daily from our live stock.

Finishes

Blue Siena is available in a range of finishes. The finish affects appearance, feel and the care it needs.

Polished

Polishing is the most classic finish for marble and limestone — a glossy surface with the highest possible colour intensity and a pronounced depth to the veining. Depending on the mineral composition, the effect can be matte-gloss in places. Acid-sensitive — wine, lemon and vinegar leave etch marks after prolonged contact.

Care & fabrication

Blue Siena is a carbonate limestone and reacts sensitively to acids. Mohs hardness about 3.

Daily cleaning: a soft microfibre cloth, clear water, a pH-neutral natural stone cleaner.

Do not use: acidic cleaners, descalers, abrasives.

Sealing: advisable every 12–18 months.

Kitchen worktop: not the first choice. Acidic splashes leave etch marks.

Repair: etch marks and scratches can be evened out by proper re-polishing.

Frequently asked questions

Where does Blue Siena come from?

From Italian limestone deposits.

Is Blue Siena a marble or a limestone?

Petrographically classified as a limestone, related in appearance to Calacatta marble.

Is Blue Siena suitable for a kitchen?

With an awareness of maintenance. As an acid-sensitive carbonate limestone it is better suited to wall applications than to intensively used worktops.

Is Blue Siena suitable for bookmatch?

Yes — the powerfully fluid vein figuring delivers dramatically axis-symmetrical compositions.

How much material do you currently hold in stock?

We currently carry 6 unsized slabs of Blue Siena in 20 mm thickness.

What does Blue Siena cost?

The price depends on the batch, thickness, surface finish and fabrication — with natural stone there is no serious flat rate per square metre. Business customers see prices once their B2B account is activated; private customers receive a complete quote through a fabricator near them.

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