SOSNADiamondsThe Curated Standard for Certified Natural Gemstones & Diamonds
Legal

Imprint & Legal

Company information, registered addresses, editorial responsibility and formal legal disclosures for the SOSNA Diamonds private house — filed jointly for our United States and European Union entities.

Effective: February 2026
I

United States Entity

SOSNA GEMS INVESTMENTS INC.
Registered head office: 7901 4th St N, Ste 300, St. Petersburg, FL 33702, United States
Miami client desk: by appointment only
State of incorporation: Florida (Florida Profit Corporation)
Florida Document Number: P24000009844
FEI / EIN: 32-0763482
Registered Agent: Registered Agents Inc., 7901 4th St N, Ste 300, St. Petersburg, FL 33702, USA
Officers & Directors: Martin Sosna (CEO), Lenka Macurová (Director), Lucie Macurová (Director)
FinCEN status: dealer in precious stones and metals (as applicable)
General inquiries: exchange@sosnagems.com
Corporate office: office@sosnagems.com
Telephone (US): +1 (727) 383-6970

II

European Union Entity

Sosna Gems Investments a.s. (joint-stock company)
Registered office: Školská 689/20, Nové Město, 110 00 Prague 1, Czech Republic
Registered in the Commercial Register maintained by the Municipal Court in Prague, Section B, File 25252
Date of incorporation: 14 April 2020
Company ID (IČO): 090 85 840
VAT ID (DIČ): CZ09085840
Share capital: CZK 2,000,000 (fully paid up); 20 registered shares of CZK 100,000 nominal value
Administrative Board: Martin Sosna, Lenka Macurová, Lucie Macurová — each member represents the company independently in all matters
Prague client desk: by appointment only
General inquiries: exchange@sosnagems.com
Corporate office: office@sosnagems.com
Telephone (EU): +420 242 488 299

III

Operating Desks

  • Prague desk (EU). European Union hub — sourcing, editorial, atelier coordination.
  • Miami desk (US). Florida hub — U.S., LATAM and APAC client service, U.S. compliance.
  • Dubai desk (DMCC). Gulf sourcing hub — colored stones and diamonds.
  • Bangkok desk (JVC). Southeast Asian sourcing hub — sapphire, ruby, spinel.
IV

Editorial Responsibility

Responsible for editorial content within the meaning of applicable press and media laws:

Martin Sosna — Founder & Principal
c/o Sosna Gems Investments a.s., Školská 689/20, Nové Město, 110 00 Prague 1, Czech Republic
exchange@sosnagems.com

V

Professional Memberships & Compliance

  • Kimberley Process Certification Scheme — participant jurisdictions (US, EU, UAE, Thailand).
  • CITES compliance for stones and finished pieces where applicable.
  • KYC / AML: FinCEN (US) and EU AMLD framework (Czech Financial Analytical Office).
  • Independent laboratory partnerships: GIA, IGI, HRD, SSEF, Gübelin.
VI

Online Dispute Resolution

Under EU Regulation No. 524/2013 the European Commission provides a platform for online dispute resolution accessible at ec.europa.eu/consumers/odr. We are not obliged, and do not commit, to participate in arbitration proceedings before a consumer arbitration board.

VII

Editorial Disclaimer

SOSNA Diamonds deals exclusively in certified natural gemstones and certified natural diamonds. We do not deal in laboratory-grown, synthetic, HPHT or CVD stones. Gemstones, diamonds and jewelry are collectible luxury goods and tangible assets, not securities or financial instruments. No content on this website constitutes financial, legal, tax or investment advice, and no appreciation, resale, liquidity or buy-back is guaranteed.