Thassos A1-A2 (also Thassos Crystallina, Thassos Crystal White, Thassos Snow White, Thassos Pure White, Thassos Waterfall, Athos White or Bianco Thassos) is the highest premium quality grade of the world-famous Greek Thassos marble from the Panagia quarry district on the island of Thassos in northern Greece — exceptionally pure, almost veinless white with an ultra-fine crystalline mineral structure and an essentially isotropic, even material effect. Frost-resistant, high in strength — used for prestige wall claddings, bathrooms, vanity tops, bar counters, feature walls and refined interior fit-outs with maximum white purity and classic Greek elegance.
Marble
Greece
Frostbeständig
2.850 kg/m³
Available as: Slabs, Skirting, Tiles and flooring slabs ·
5 of 15 reserved
Other trade names: Athos White Marble, Bianco Taxos Marble, Bianco Thassos Marble, Blanco Thasos Marble, Blanco Thassos Marble, Blanco Thassos Marmol, Blanco Thassos Marmor, Branco Thassos Marble, Greek Crystal White Marble, In China Stone Market:希腊水晶白(Xīlà Shuǐjīng Bái), In China Stone Market:白水晶(Bái Shuǐjīng), Limenas White Thassos Marble, Marmi Bianco Taxos, Marmol Blanco Thasos, RO-02-043, THASSOS, THASSOS GROB, Thassos Cristallina Marble, Thassos Crystal White, Thassos Crystal White Marble, Thassos Crystallina Marble, Thassos Crystallina Semi White, Thassos Extra Marble, Thassos Extra White Marble, Thassos Limenas White, Thassos Limenas White Marble, Thassos Marble, Thassos Marion Semi White Marble, Thassos Pure White, Thassos Pure White Marble, Thassos Red Lines Marble, Thassos Snow White Marble, Thassos Waterfall Marble, Thassos White Crystallina Marble, Thassos White Marble, Thassos White Waterfall Marble, White Thassos Marble
About Thassos A1-A2
Thassos marble is among the whitest and purest marbles in the world. The island of Thassos in the northern Aegean, off the Greek mainland coast of the Macedonia region, has been famous for its white marble since antiquity — already in classical Greek antiquity Thassos marble was won for sculptural and architectural purposes, and in the modern stone industry Thassos has established itself as a synonym for the “whitest marble”. The quarries in the Panagia quarry district on the island supply the premium qualities of this marble family to this day, of which the A1-A2 grade represents the highest quality level of the Greek quarry classification — blocks with maximum white purity, the most minimal impurities and an almost completely homogeneous mineral distribution. In the stone trade the A1-A2 grade is sold under numerous marketing names: Thassos Crystallina, Thassos Crystal White, Thassos Snow White, Thassos Pure White, Thassos Waterfall, Athos White and Bianco Thassos are the best-known designations used in parallel.
Geologically it is an exceptionally calcite-rich crystalline metamorphic marble with a purity of calcite content that is reached by only a few other white marbles worldwide. The microstructure is medium-grained crystalline and essentially isotropic — the calcite crystals are distributed evenly and without pronounced foliation, which gives the stone an exceptionally even material effect. Geologically the stone formed around 30 to 50 million years ago during the Alpine orogeny in the Rhodope complex from pure Mesozoic limestone formations. The high purity and the minimal admixture of colouring mineral components result in the iconically luminous white look that makes Thassos unique in the world of natural dimension stone.
Visually, Thassos A1-A2 is marked by an exceptionally pure, almost veinless white appearance. Unlike most white marbles — which acquire their character through grey or coloured vein markings — Thassos A1-A2 in its purest form is almost completely homogeneously white: a luminously radiant white with a fine crystalline microstructure which, when polished, develops a silky soft, almost porcelain-like appearance. Occasional fine grey movements or subtle tonal nuances do occur, but are minimal in the A1-A2 grade — the A1-A2 classification ensures that the slabs in a delivery show maximum white homogeneity. Slab variation is therefore greatly reduced compared with figured marbles — Thassos A1-A2 is the choice for large-area white laying in which an evenly luminous white slab appearance is wanted.
Technically, Thassos A1-A2 shows the typical values of the highest-quality Greek marbles: bulk density of 2850 kg/m³ (exceptionally high), compressive strength of 97.35 MPa, flexural strength of 13.1 MPa, abrasion resistance 6.60 cm³/50 cm² and water absorption of only 0.17 % — a remarkably low water absorption that qualifies the stone for demanding internal and structurally protected external applications. Frost resistance is DNSA-documented and confirmed by centuries of Greek building experience. Like all carbonate marbles, Thassos is acid-sensitive and reacts to citric acid, vinegar, wine or acidic cleaners with matt etching — a property typical of marble that is manageable through careful attention. Polished surfaces are not stable in the long term in openly weathered external situations; structurally protected applications or more matt surface finishes are to be preferred there.
In interior fit-out, Thassos A1-A2 is one of the most iconic choices for the highest design demands where a pure white material signature is wanted. Classic applications are wall claddings in hotel lobbies and reception areas, luxurious bathrooms and spa facilities, vanity tops, bar counters, fireplace surrounds, feature walls in prestige residential and commercial spaces, table and console tops, and floor surfaces in entrance halls and prestige living spaces. The luminously white tonality reflects light exceptionally well and creates light, friendly rooms — a property that makes Thassos particularly attractive for bathrooms, smaller rooms and for interior architecture with a desire for maximum brightness. The stone harmonises with every design concept — from puristic modern architecture with black steel, exposed concrete and glass, through classically elegant rooms with dark timber and brass, to spa schemes with warm timbers and natural accompanying materials. Outdoors, Thassos is used for façade claddings, plinth details and entrance areas protected beneath a canopy — the low water absorption and frost resistance qualify it for Central European climate conditions as well.
In stock
Current availability from our warehouse.
15 slabs in stock — 10 available now, 5 reserved · plus 9 blocks
Thicknesses: 1–3 cm · Finishes: Polished, Satin-honed · Available as: Slabs, Skirting, Tiles and flooring slabs
Guide values for the stone type, taken from manufacturer and test reports. Natural stone is a natural product — individual batches and slabs can differ. For critical applications, request slab-specific test data.
Thassos A1-A2 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.
Satin-honed
The surface is brushed — softer minerals are selectively removed, creating a subtle depth and a matte appearance. Strongly veined limestones in particular gain a characterful look and feel this way. The more matte finish conceals small etch marks better than a polish and stands up better to everyday use on heavily used interior surfaces.
Care & fabrication
As a crystalline marble, Thassos A1-A2 is acid-sensitive — the most important piece of care information. The luminously white tonality makes any discolouration or dulling visually particularly clearly visible, which is why careful attention is even more important with Thassos than with marbles that vary in colour. Indoors, use only warm water with a pH-neutral stone cleaning product for daily cleaning — acidic household cleaners, vinegar, citric acid descalers or other acidic substances cause matt etched patches that can only be reversed by professional repolishing. Take up spilt acidic liquids immediately with clear water. A professional sealer after laying, and then every 1 to 2 years, is recommended indoors in order to reduce the take-up of pigments (red wine, coffee, olive oil, tomato sauce) — on the pure white tonality, pigment stains are particularly clearly visible, which is why the prompt taking-up of spilt substances is especially important. In the bathroom, water droplets should be squeegeed off after showering, since standing limescale-bearing water on unsealed spots can lead to discolouration over the long term. For wall claddings, regular dusting and occasional wiping with a damp cloth is sufficient. On kitchen worktops and bar counters, coasters should be used for glasses with acidic drinks, as well as chopping boards for preparing food. Outdoors, the avoidance of de-icing salt in winter must be observed — chloride-free de-icing agents are the gentler alternative.
Frequently asked questions
What does the classification “A1-A2” mean with Thassos marble?
The classification “A1-A2” corresponds to the highest quality level in the Greek quarry grading of Thassos marble. A1 and A2 denote blocks with maximum white homogeneity, the most minimal impurities and an almost completely even mineral distribution — the premium grade of the quarries. Other classifications (B, C) denote blocks with increasing vein markings or tonal variation. Thassos A1-A2 is therefore the purest, whitest and thus most expensive grade of Thassos marble.
What do the parallel trade names such as Thassos Crystallina or Thassos Snow White mean?
Thassos Crystallina, Thassos Crystal White, Thassos Snow White, Thassos Pure White, Thassos Waterfall, Athos White and Bianco Thassos are synonymous or closely related trade names for the same premium Thassos marble. The parallel designations arise through the marketing of various suppliers and through international market strategies — all denote the A1-A2 premium quality of Thassos marble from the Panagia quarry district on the Greek island of Thassos.
What distinguishes Thassos from other white marbles such as Carrara or Statuario?
Thassos is distinguished by its maximum white purity and its almost complete absence of veining — it is the whitest natural marble available. Carrara marbles (Bianco Carrara, Statuario, Calacatta), by contrast, show characteristic grey vein markings that define their material signature. Anyone looking for a pure white, as veinless a marble as possible chooses Thassos; anyone wanting the classic Italian marble appearance with grey vein markings chooses Carrara. Thassos has a somewhat denser microstructure (bulk density 2850 kg/m³ vs. approx. 2715 kg/m³ for Carrara) and is correspondingly somewhat more robust mechanically.
Is Thassos A1-A2 suitable for bathrooms?
Outstandingly so. The luminously white tonality creates a light, friendly atmosphere and reflects light exceptionally well — a property that makes Thassos one of the classic choices for luxurious bathrooms, spa facilities, vanity tops and wall claddings. The low water absorption of 0.17 % is a clear advantage over softer white marbles. Water droplets should be squeegeed off after showering in order to avoid water droplet rings, and acidic cleaning products must absolutely be avoided — pH-neutral stone cleaning products are standard.
Is Thassos A1-A2 suitable for external applications?
With reservations. The low water absorption of 0.17 % and the frost resistance qualify Thassos for moderately weathered external applications such as façade claddings, plinth details and entrance areas protected beneath a canopy. Polished surfaces are, however, not stable in the long term in openly weathered external situations — the polish is lost under the influence of the weather; a matt, textured surface finish is more stable over the long term. For openly weathered horizontal external surfaces with pronounced freeze-thaw cycles and acidic precipitation, denser, acid-insensitive hard rocks are the more robust alternative.
Which slab formats are usual for Thassos A1-A2?
Standard large formats from the Thassos quarries typically lie between 280 × 160 cm and 320 × 200 cm in thicknesses of 2 cm and 3 cm. Thinner formats (1 cm and 1.5 cm for lightweight wall claddings, 4 cm and above for stairs) as well as skirtings and tile formats for floor surfaces can also be sourced through ROSSITTIS. Because of the premium quality and the specific Greek origin, availability is selective — for specific dimensions please enquire directly.
What does Thassos A1-A2 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.
