GIA Executive and Leadership Team

July, 2026

Leadership Overview

GIA has 9 executives leading key functions including strategy, finance, people operations, and market development.

Dedicated to advancing gemological knowledge, GIA drives innovation in research and education, shaping the future of the jewelry arts and upholding industry integrity.

Leadership Roles at GIA

  • Chief Executive Officer - Dubai Swati Diamonds Fzco
  • Founder & Chief Executive Officer - Loana Nuñez
  • Partner, Chief Executive Officer - Yair Peri
  • President & Chief Executive Officer - Cheryl Sepienza
  • Chief Executive Officer & Co-Founder - Tapajyoti Das
  • Chief Financial Officer - Andrea Pane
  • President Since 2001 - Merle Koblenz
  • President - Tamana Khan
  • Chief People Officer - Sara Kruse
  • Dubai Swati Diamonds Fzco - Chief Executive Officer

    Dubai Swati Diamonds Fzco, the Chief Executive Officer at GIA, directs the overarching strategic vision and operational execution for the institute. This leadership role involves guiding research initiatives and educational programs, ensuring alignment with GIA's mission to foster trust and understanding in the gem and jewelry world. Dubai Swati Diamonds Fzco oversees the integration of new technologies and methodologies within the institute's core functions, driving advancements in gem identification and grading standards. The Chief Executive Officer's purview extends to global outreach, cultivating partnerships and expanding the institute's educational footprint across key international markets. By championing rigorous scientific inquiry and educational excellence, Dubai Swati Diamonds Fzco solidifies GIA's position as the foremost authority in gemology and the jewelry arts, impacting market confidence and consumer education worldwide.

    Loana Nuñez - Founder & Chief Executive Officer

    Loana Nuñez, the Founder & Chief Executive Officer at GIA, establishes the foundational principles and long-term strategic direction for the organization. This executive leadership position involves conceptualizing and implementing innovative approaches to gemological research and education, ensuring GIA remains at the forefront of the industry. Loana Nuñez guides the development of new curricula and research methodologies, fostering an environment of continuous learning and discovery. The Founder & Chief Executive Officer's responsibilities include cultivating key relationships with industry stakeholders and academic institutions globally, expanding GIA's influence and impact. By instilling a culture of scientific integrity and educational excellence, Loana Nuñez drives the institute's mission to advance knowledge and promote ethical practices within the gem and jewelry arts, significantly contributing to market transparency and consumer assurance.

    Yair Peri - Partner, Chief Executive Officer

    Yair Peri, the Partner, Chief Executive Officer at GIA, spearheads the strategic partnerships and executive leadership critical for the institute's growth and operational effectiveness. This role involves forging alliances with industry leaders and research bodies to enhance GIA's global standing and educational offerings. Yair Peri directs initiatives aimed at expanding the institute's research capabilities and disseminating cutting-edge findings across the gemological community. The Partner, Chief Executive Officer's focus includes optimizing resource allocation and driving operational efficiencies to support GIA's core mission of research and education. By fostering collaboration and strategic development, Yair Peri ensures GIA continues to set industry benchmarks for quality and integrity in gemology and the jewelry arts, reinforcing its commitment to advancing scientific understanding and professional standards.

    Cheryl Sepienza - President & Chief Executive Officer

    Cheryl Sepienza, the President & Chief Executive Officer at GIA, commands the comprehensive strategic direction and operational oversight of the institute. This executive position involves leading all facets of GIA's mission, from pioneering research endeavors to delivering world-class educational programs in gemology and the jewelry arts. Cheryl Sepienza drives initiatives to enhance GIA's global presence and impact, ensuring its research findings and educational standards remain unparalleled. The President & Chief Executive Officer's purview includes fostering innovation, maintaining scientific rigor, and upholding the highest ethical principles across all institute operations. By guiding the organization's trajectory, Cheryl Sepienza ensures GIA continues to be the definitive source for gemological knowledge and expertise, promoting confidence and integrity within the international market.

    Tapajyoti Das - Chief Executive Officer & Co-Founder

    Tapajyoti Das, the Chief Executive Officer & Co-Founder at GIA, shapes the strategic vision and operational framework that underpins the institute's research and educational mandates. This leadership capacity involves guiding the development and implementation of innovative gemological research and advanced training programs. Tapajyoti Das oversees the integration of new technologies and scientific methodologies, ensuring GIA's continued leadership in the field of gemology and the jewelry arts. The Chief Executive Officer & Co-Founder's responsibilities extend to fostering global collaborations and expanding access to GIA's expertise. By championing scientific discovery and educational excellence, Tapajyoti Das reinforces GIA's commitment to advancing knowledge and promoting transparency within the industry, significantly contributing to market trust and consumer education worldwide.

    Andrea Pane - Chief Financial Officer

    Andrea Pane, the Chief Financial Officer at GIA, directs the financial strategy and fiscal management essential for sustaining the institute's research and educational operations. This critical role involves overseeing budgeting, financial planning, and resource allocation to support GIA's mission in gemology and the jewelry arts. Andrea Pane ensures robust financial controls and reporting mechanisms are in place, safeguarding the institute's assets and promoting fiscal responsibility. The Chief Financial Officer's responsibilities include managing investment strategies and optimizing financial performance to enable continued innovation and expansion of GIA's global initiatives. By maintaining financial stability and strategic fiscal oversight, Andrea Pane empowers GIA to advance its scientific endeavors and educational outreach, reinforcing its position as a trusted authority in the industry.

    Merle Koblenz - President Since 2001

    Merle Koblenz, the President Since 2001 at GIA, provides sustained executive leadership and strategic oversight for the institute's extensive operations in gemology and the jewelry arts. This long-standing role involves guiding GIA's evolution, ensuring its research and educational programs consistently meet the highest industry standards. Merle Koblenz directs initiatives focused on enhancing GIA's global impact and fostering innovation within its scientific and academic endeavors. The President Since 2001's responsibilities include cultivating key stakeholder relationships and championing the institute's commitment to integrity and knowledge dissemination. By leveraging extensive experience and strategic foresight, Merle Koblenz ensures GIA maintains its preeminent position as a leader in gemological research and education, contributing significantly to market confidence and professional development worldwide.

    Tamana Khan - President

    Tamana Khan, the President at GIA, directs the strategic execution and operational management critical to advancing the institute's research and educational objectives in gemology and the jewelry arts. This leadership position involves overseeing key initiatives that enhance GIA's global reach and scientific contributions. Tamana Khan focuses on driving operational efficiencies and fostering collaborative environments that support innovation and knowledge sharing across the organization. The President's responsibilities include ensuring GIA's programs and research remain at the cutting edge of the industry, upholding the institute's reputation for excellence and integrity. By guiding strategic development and operational oversight, Tamana Khan reinforces GIA's commitment to advancing gemological science and education, thereby strengthening market trust and consumer understanding.

    Sara Kruse - Chief People Officer

    Sara Kruse, the Chief People Officer at GIA, leads the human capital strategy and organizational development initiatives that support the institute's mission in gemology and the jewelry arts. This executive function involves cultivating a high-performance culture, attracting and retaining top talent, and fostering employee engagement across all departments. Sara Kruse oversees the implementation of comprehensive HR policies and programs designed to enhance professional growth and well-being for GIA's workforce. The Chief People Officer's responsibilities include developing leadership capabilities and ensuring a diverse and inclusive work environment that aligns with GIA's commitment to scientific excellence and educational integrity. By prioritizing people-centric strategies, Sara Kruse ensures GIA possesses the skilled and motivated team necessary to drive its research and educational objectives forward.

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    Frequently Asked Questions Regarding GIA Top Executives and Leadership Team

    Who leads GIA?
    GIA is led by Dubai Swati Diamonds Fzco (Chief Executive Officer), along with executives such as Loana Nuñez (Founder & Chief Executive Officer) and Yair Peri (Partner, Chief Executive Officer).
    Who is part of GIA’s executive team?
    The executive team of GIA includes leaders such as Dubai Swati Diamonds Fzco (Chief Executive Officer), Loana Nuñez (Founder & Chief Executive Officer), Yair Peri (Partner, Chief Executive Officer) and other senior executives.
    How many executives does GIA have?
    GIA has 9 executives leading key business areas.
    What roles are included in GIA’s leadership team?
    The leadership team of GIA includes roles such as Chief Executive Officer, Founder & Chief Executive Officer, Partner, Chief Executive Officer, President & Chief Executive Officer, Chief Executive Officer & Co-Founder.