Portoro Domingo is a dramatic limestone from the Dominican Republic with a deep black ground tone and a powerfully branching golden-cream network of veins — a luxurious reproduction of the Italian Portoro marble look of Caribbean provenance. Atmospherically dramatic and powerful in design terms for statement walls, fireplace surrounds and prestige interior surfaces.
Caribbean limestone (a carbonate sedimentary rock) from the Dominican Republic — a Tertiary to Pleistocene platform limestone. The black colouring comes from organic, bituminous pigmentation; the gold-cream veins are secondary calcite/iron oxide healing zones. Mohs hardness approx. 3, acid-sensitive. Stylistically similar to the Italian Portoro marble (Levanto, Liguria) — hence the brand name — but petrographically and geographically an independent material. NOT identical to the Italian original.
Other trade names: Port Oro, Port d Oro, Porto Domingo, Portoro Gold
About Portoro Domingo
Portoro Domingo is a black limestone from the Dominican Republic. The Caribbean islands are among the less well-known but entirely productive building stone provinces — the geologically young sedimentary rocks of the region often show particular mineral compositions with dramatically dark tonalities and powerfully veined pictorial compositions.
The brand name “Portoro Domingo” refers to the iconic Italian Portoro marble (Levanto, Liguria) — one of the most dramatic black marbles with warm golden veining, traditionally used for luxurious architectural projects. Portoro Domingo quotes this pictorial idea in a Caribbean version.
Geologically it is a Tertiary to Pleistocene platform limestone of the Caribbean carbonate province. The intense black colouring comes from the finest embedded organic and bituminous constituents, which were enclosed in the carbonate ground during sedimentation. The high-contrast golden-cream veins are secondary calcite and iron oxide healing zones along former fractures — the same formation mechanism as with Sahara Noir or the Italian Portoro marble.
In the slab picture, Portoro Domingo shows a deep black ground tone run through by a dramatically branching network of veins in warm honey, gold and cream tones. The geometry of the veining looks powerfully organic — flowing main veins branch into finer accompanying lines, with occasionally more powerful knot zones. An exceptionally dramatic material history.
For use this means: Portoro Domingo is a premium choice for statement wall claddings, fireplace surrounds, bar counters, vanity tops, hotel lobbies and prestige interior surfaces with luxurious, dramatic ambitions. Combined with warm timber, brass, bronze and muted earth tones, the material develops an atmospheric, luxurious, almost sacral effect.
Technically, Portoro Domingo, like all carbonate limestones, is acid-sensitive (Mohs hardness around 3) and needs an awareness of care. Unlike Italian Portoro marble (a slowly metamorphosed, dense marble), Portoro Domingo as a younger limestone is somewhat softer and more sensitive — careful impregnation and consistent care are indispensable.
At ROSSITTIS we currently carry Portoro Domingo as 18 raw slabs in various thicknesses (30, 40 mm; on request also in thinner format versions) with a polished surface. The 40 mm thickness is particularly suitable for cantilevered vanity tops and prestige bar counters. On request we produce from them wall claddings, fireplace surrounds, vanity tops, table surfaces and project-specific bespoke cuts. For bookmatched settings we are happy to reserve material directly from the same block on request.
For anyone comparing Portoro Domingo with other materials: the stylistic model is genuine Italian Portoro marble (Levanto, Liguria) — geologically more authentic and uniquely Italian, but more expensive and with the care requirements typical of marble. Sahara Noir marble (Tunisia) shows a similar black-and-gold character with Atlas provenance. In the field of porcelain, Laminam Sahara Noir Extra, Lioli Porcelain and similar designs offer comparable pictures with the full robustness of the material.
Our honest assessment: Portoro Domingo is an exceptional choice for projects with a dramatic, luxurious black-and-gold aesthetic in which the material is meant to become the lead player in design terms. Anyone who needs maximum acid resistance for intensive kitchen applications should reach for porcelain or black granite. But anyone who values the authentically Caribbean black-and-gold limestone character with a powerfully dramatic vein pattern will find here a unique material with a particular geographical provenance.
In stock
Current availability from our warehouse.
18 slabs in stock · plus 2 blocks
Thicknesses: 3–185 cm · Finishes: Polished, unbearbeitet · Available as: Slabs, Blocks
Portoro Domingo 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
Portoro Domingo is a carbonate limestone and reacts sensitively to acid. Mohs hardness around 3.
Daily cleaning: a soft microfibre cloth, clear water and a pH-neutral natural stone cleaner.
Do not use: acidic cleaners, limescale removers, scouring agents.
Impregnation: recommendable directly after installation and, depending on loading, every 6–12 months. On the black tonality, regular impregnation is particularly important, because saturation marks otherwise become visible as paler areas.
Kitchen worktop: not the first choice. Acidic splashes (wine, lemon, tomato sauce) leave matt etch marks immediately, which are particularly visible on the polished black surface. Better suited to statement walls, vanity tops and prestige areas.
Repair: etch marks and scratches can be evened out by proper re-polishing.
Frequently asked questions
Is Portoro Domingo the same stone as Italian Portoro?
No. Genuine Portoro marble comes from Levanto in Liguria, Italy — one of the most iconic Italian marbles. Portoro Domingo is a Caribbean version (Dominican Republic) with a similar pictorial idea, but petrographically and geographically a different material — classified as a limestone, not as a marble.
Where does Portoro Domingo come from?
From the Dominican Republic — one of the less well-known but entirely productive Caribbean building stone provinces.
Is Portoro Domingo suitable for the kitchen?
Not the first choice. As an acid-sensitive carbonate limestone, wine, lemon and tomato sauce leave matt etch marks immediately. Better suited to prestige wall claddings, vanity tops and statement areas than to intensively used worktops.
Which thicknesses are available?
In ROSSITTIS stock we carry Portoro Domingo in 30 mm and 40 mm thickness with a polished surface.
Is Portoro Domingo suitable for bookmatching?
Excellently. The powerfully fluid vein pattern delivers dramatic axially symmetrical pictures with mirrored pairs of slabs.
How much material do you currently have in stock?
We currently carry 18 raw slabs of Portoro Domingo in 30 mm and 40 mm thickness.
What does Portoro Domingo 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.
