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Thalassa Granite

The rich grey white colours of Marshalls’ Thalassa Granite are a welcome addition to any landscape. Available in several finishes, it serves as durable paving for trafficked and pedestrian areas.

Choose Thalassa Granite in a flamed or fine picked finish for a high slip-skid resistance that’s essential for paving, setts and kerbs. The polished finish is best suited to elements such as copings and masonry.

Thalassa Granite is produced to ISO9001 quality assurance standards. All Marshalls’ granite products are fully tested to the appropriate standards in the UK and CE marked in accordance with the latest legislation.

• Hard-wearing and durable

• Rich grey white shades

• Available in several finishes

• Produced to ISO9001 QA standards

  • Available in a range of standard plan sizes
  • Bespoke size options can be accommodated upon request

Country of Origin


Ethical Risk Index

Marshalls score 1.7
Cluster score 1.7

Ethical Risk Index

This Radar diagram illustrates the level of ethical risk associated with a specific stone. Ethical risk is plotted against the 10 ten measures of the ERI, with each value drawn from reports produced by independent ethical auditors, engaged by Marshalls to provide non-biased and honest reporting into levels of risk in that supply chain.

Each of the 10 measure is designed to recognise different and discrete sources of ethical risk. This produces a bespoke, fit for purpose framework designed specifically for the requirements of the stone industry. The radar diagram itself also compares the Marshalls supply chain to the wider industry in that stone, giving users a working comparison of Marshalls supply chain to the industry average, in the opinion of the auditor.

  • Modern Slavery Act Awareness
  • Supply Chain Visibility
  • Income and Employment Security
  • Health & Safety
  • Employment Freely Chosen
  • Empowerment
  • Environmental
  • Governance
  • Corruption and Bribery
Ethical Risk Graph Image
  • Thalassa Granite
  • Cluster Score
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tritanial - thalassa - proteus granites - victoria gate leeds

Certification Logos and Accreditations

  • Accreditation BSB Blue Stamp 2018 Logo
  • Accreditation eti logo Logo
  • Accreditation BES 6001 Logo
  • Accreditation GlobalCompact Logo
  • Accreditation Fair Tax logo Logo
  • Accreditation Living wage Logo
  • Accreditation Stone Federation Logo