In literal terms, marble is a metamorphic rock composed of recrystallised carbonate minerals. In geology, the term ‘marble’ refers to metamorphosed limestone, but its use as a luxury material more broadly encompasses unmetamorphosed limestone and many other types of stone.
‘Onyx’ primarily refers to the parallel banded variety of chalcedony, a silicate mineral. Specimens of onyx commonly contain bands of black and/or white. However, as a descriptive term the word ‘onyx’ has also been applied to parallel banded varieties of alabaster, marble, obsidian and opal, and also to materials with contorted banding and a wide variety of colours.
Detail from Tanzanian Onyx slab
Lotus Onyx slab, naturally backlit with sunlight
McMarmilloyd stocks an unprecedented and unique collection of luxury marbles and onyx, quite unlike any other collection in the UK. The quality and provenance is simply unparalleled. The variety of luxury slabs available allows us to cater for every requirement, for projects where only the very best will do, and for buildings both classic and modern.
The slabs themselves have to be seen to be fully appreciated, and we welcome visitors. To register your interest or to arrange a visit, please use the contact form.