Stone Industry Standards
Natural Stone Institute
The Natural Stone Institute (NSI) is the leading professional trade association serving the North American stone industry. Its membership encompasses fabricators, installers, distributors, quarriers, and allied professionals committed to the highest standards of technical practice, worker safety, and consumer education.
NSI maintains comprehensive technical resources including the Dimension Stone Design Manual, widely regarded as the authoritative reference for architects, engineers, and stone professionals. The Institute's accreditation programs, safety standards, and educational curricula establish the benchmarks against which professional competence in the field is measured.
Continuing Education
NSI Continuing Education Speaker
Recognition as a Continuing Education Speaker through the Natural Stone Institute denotes that an individual has been credentialed to deliver professional development instruction to architects, designers, and industry practitioners. This designation is awarded to those who demonstrate both technical mastery and the capacity to communicate specialized knowledge in structured educational settings.
Continuing education programming through NSI fulfills accreditation requirements for licensed architects and design professionals, placing speakers at the intersection of technical expertise and professional instruction. This role reflects a commitment not only to personal professional development but to the broader advancement of knowledge across the design and construction professions.
Sculptural Arts
International Sculpture Center
A Global Community of Sculptural Practice
The International Sculpture Center (ISC) is a nonprofit organization founded in 1960, dedicated to the advancement of sculpture as a professional discipline and public art form. Its membership spans sculptors, curators, educators, collectors, and institutions across more than 60 countries.
Through its publication Sculpture Magazine, international symposia, grant programs, and public advocacy, the ISC supports practitioners who work at the convergence of material knowledge, artistic vision, and public engagement. Membership affirms participation in a discipline that holds stone craftsmanship among its most enduring and technically demanding traditions.
Founded
1960 — over six decades of sculptural advocacy
Global Reach
Members in more than 60 countries worldwide
International Trade
SIMAGRAN-SP
Brazilian Stone Industry Association
São Paulo
SIMAGRAN-SP (Sindicato da Indústria de Mármores e Granitos do Estado de São Paulo) is the primary trade association representing the marble and granite industry in the state of São Paulo, Brazil — one of the world's foremost producing regions for natural stone.
Affiliation with SIMAGRAN-SP reflects engagement with international stone supply chains, awareness of sourcing standards and extraction practices, and a professional relationship with the Brazilian stone sector. For practitioners who specify, procure, or work with material of Brazilian origin, this connection provides access to industry intelligence, regulatory developments, and professional networks that span the global stone trade.
Business Advocacy
National Association for the Self-Employed
Advocacy & Representation
NASE provides legislative advocacy on behalf of independent business owners, ensuring that the interests of sole proprietors and micro-enterprises are represented in policy discussions affecting healthcare, taxation, and business regulation.
Business Resources
Members access professional development resources, health coverage options, and expert guidance designed to support the operational and financial sustainability of independent practices across all trades and professions.
Professional Community
Membership connects independent craftspeople and sole practitioners with a national network of self-employed professionals, reinforcing the legitimacy and long-term viability of independent practice in specialized trades.
Preservation & Workforce
The Stone Foundation
Preserving the Art and Craft of Stonework
The Stone Foundation is a nonprofit organization dedicated to the preservation, education, and promotion of traditional dry-stone walling and allied stonework crafts. It supports practitioners, educators, and institutions engaged in transmitting the technical knowledge of historic stone construction to new generations of craftspeople.
Through workshops, publications, certification programs, and field schools, the Foundation addresses a critical need: the preservation of specialized construction knowledge at risk of being lost as the master-craftsman generation retires. Affiliation reflects a commitment to workforce development and to the educational infrastructure that sustains heritage building trades.
