2025 Online Auction
Registration Opens: Monday, July 14, 2025
Auction Donations Deadline: Friday, August 8, 2025
Auction Previews Available: Wednesday, August 27, 2025
Bidding Opens: Wednesday September 3rd at 12:00pm ET
Bidding Closes: Wednesday, September 10th at 6:00pm ET
ABOUT THE AUCTION
All proceeds from donated items will benefit the Natural Stone Institute.
Proceeds from a special DONATE NOW button online will benefit the Natural Stone Foundation – the philanthropic arm of the Natural Stone Institute – which provides a funding mechanism for key industry initiatives.
HOW TO PARTICIPATE
REGISTER NOW!
Sign up, bid and preview the auction items.
Visit https://nsiauction25.cbo.io to get started.
Everyone must register and provide a credit card for payment to place a bid.
ONLINE BIDDING:
Opens: Wednesday September 3rd at 12:00pm ET
Closes: Wednesday, September 10th at 6:00pm ET
All winning online bidders will be notified by text or email post event.
ITEM HIGHLIGHTS
NSI Testing Lab Vouchers
2026 VIP Vermont Study Tour Registration Package
MLB Game Tickets
Unique Vacation Packages
Natural Stone
Tools
Gift Cards
and more!
View the auction webpage often to see newly added items.
