ESTABLISHED FOUR DECADES AGO
Gems City
Auction House
Premium natural gemstones sourced from our ethical mining operations in Brazil, Sri Lanka, and Colombia. Four generations of trust and excellence.
OUR LEGACY
A Generational Tradition of Excellence
Located in the heart of Bangkok's gem district at BIS Building, Mahesak Suryawong, Shop 1C1, Gems City Auction House has been a trusted name in the premium gemstone industry for over four decades. Our strategic location places us at the center of the global gem trade.
We specialize in certified retail and wholesale gemstone sales, offering professional handling, clear ethical practices, and worldwide client support. From collectors to investors, we serve discerning clients who value authenticity and quality.
Premium Gemstones
Rubies, Emeralds, Sapphires, Diamonds & Paraiba Tourmaline
Global Mining
Own ethical mining operations in Brazil, Sri Lanka & Colombia
Certified Quality
All gems certified by GIA, GRS, Gübelin, Guild & Bellerophon
Investment Support
Expert guidance for gem investments and collection building
OUR COLLECTION
Premium Gemstones
Explore our curated selection of the world's finest natural gemstones, each hand-selected and certified for quality and authenticity.
Ruby
The King of Gems - Symbol of passion and power
Emerald
Nature's treasure - Vivid green elegance
Sapphire
Royal blue - Timeless sophistication
Diamond
Eternal brilliance - Forever cherished
Paraiba
Electric blue - Rarest of the rare
OUR ORIGINS
Ethical Mining Operations
We own and operate legal, ethical mining operations across three continents, ensuring transparency from source to sale.
Brazil
Brazil Mining
Our Brazilian operations specialize in premium emeralds, sourced through sustainable and ethical mining practices.
Gems: Emeralds, Tourmaline
Sri Lanka
Sri Lanka Mining
The gem island of Sri Lanka provides us with exceptional sapphires and rare Ceylon gemstones.
Gems: Sapphires, Rubies
Colombia
Colombia Mining
Colombian mines yield some of the world's finest emeralds with unmatched color saturation.
Gems: Emeralds
OUR LEADERSHIP
Meet Our Team
A legacy of expertise and passion, guiding Gems City Auction House through generations.
Hassan
Founder & CEO
"With more than three decades in the gemstone industry, our Founder defines trust, mastery, and timeless excellence."
Syed Hannan Hassan
Managing Director
"With a forward-thinking mindset and hands-on leadership, our Managing Director plays a key role in shaping the growth and future of Gems City."
WHAT WE OFFER
Our Services
Retail Sales
Certified natural gemstones for individual collectors and enthusiasts.
Wholesale
Bulk supply for jewelers and retailers with competitive pricing.
Investment Advisory
Expert guidance on gem investments and portfolio diversification.
Collection Building
Personalized assistance in building your dream gem collection.
Certification
All gems come with certificates from leading gemological institutes.
Worldwide Shipping
Secure, insured delivery to clients across the globe.
TRUSTED CERTIFICATIONS
Certified by World's Leading Institutes
Design Your Dream Jewelry
Have a unique jewelry idea? Use our AI-powered design tool to visualize your dream piece. Describe your vision and watch it come to life!
TESTIMONIALS
What Our Clients Say
"Exceptional quality emeralds! The team at Gems City guided me through every step of my purchase. Truly a world-class experience."
James Wilson
New York, USA
"I've been collecting gemstones for 15 years, and Gems City offers the finest Ceylon sapphires I've ever seen. Highly recommended!"
Aisha Rahman
Dubai, UAE
"Professional service, certified gems, and fair pricing. This is how the gemstone business should be done. Will return for more!"
Marco Rossi
Milan, Italy
"Purchased a stunning ruby for my wife's anniversary. The certification and ethical sourcing gave me complete confidence in my purchase."
Chen Wei
Singapore
"I love the expirnce "
Ying
Bangkok
"This is a test review for the Gems City website. The gemstones look amazing!"
Test User
Test City
"Test persistence message 042304287023"
Persistence Tester
Test Location
"Amazing gemstones and excellent service! The Ruby I purchased was absolutely stunning."
Test Reviewer
Bangkok, Thailand
Share Your Experience
HAVE QUESTIONS?
Frequently Asked Questions
GET IN TOUCH
Contact Us
Visit Our Showroom
Address
BIS Building, Mahesak Suryawong
Shop 1C1 (Right at entrance)
Bangkok, Thailand
Phone
+66 985438452
+66 827100489
gemscityauction01@gmail.com