Our team of luxury asset specialists is at your service
London
1 Royal Exchange, Cornhill, London EC3V 3LN, United Kingdom
+44 20 7946 0000
Geneva
18 Rue du Rhône, Geneva 1204, Switzerland
+41 22 900 0000
Dubai
Dubai International Financial Centre, Gate Village 10, Dubai
+971 4 300 0000
Business Hours
For urgent inquiries, members with Annual Prestige plans have access to 24/7 concierge support.
Answers to the most common questions about reaching our team, visiting our offices, and working with Globall Exchange.
Our London, Geneva, and Dubai offices are open Monday to Friday, 9:00 AM to 6:00 PM local time. Saturday appointments are available from 10:00 AM to 2:00 PM. Annual Prestige members have access to 24/7 concierge support via a dedicated phone line.
We aim to respond to all contact form submissions within 24 business hours. For urgent matters, members with an Annual Prestige subscription receive priority response within 2 hours during business days. Phone inquiries are answered immediately during office hours.
All office visits are by appointment only. This ensures each client receives dedicated, uninterrupted time with a specialist. To schedule a visit at our London, Geneva, or Dubai office, please submit the contact form or call the relevant office directly.
Our specialists handle buying and selling inquiries for gold, silver, platinum, diamonds, and coloured gemstones; membership and subscription questions; asset authentication requests; business partnership proposals; and general marketplace support. Select the appropriate inquiry type in the form for fastest routing.
Select "Authentication" as your inquiry type in the contact form and describe the asset in detail — including any existing certificates, weight, and provenance documentation. Our GIA-trained specialists will review your submission and arrange an assessment, either in-person at one of our offices or via our secure remote authentication service.
Absolutely. All client communications and personal information are handled with strict confidentiality under our privacy policy. We do not share client data with third parties. High-value transaction details are protected by our ISO 27001-aligned information security practices.
When you contact Globall Exchange, you are not reaching a generic support desk. Every inquiry is handled by a specialist with deep expertise in their domain — whether that is precious metals trading, gemological assessment, escrow management, or logistics coordination. Our London headquarters houses our core team of LBMA-certified metals specialists and GIA-trained gemologists. Our Geneva office focuses on institutional and family office relationships. Our Dubai office serves the Gulf region and connects buyers and sellers across the Middle East and Asia.
We understand that transactions involving investment-grade gold bars, certified diamonds, and rare gemstones require more than a transactional relationship. They require trust, expertise, and a partner who understands the nuances of international precious metals markets. That is why every client — from first-time buyers to institutional investors managing multi-million dollar portfolios — receives the same level of dedicated, personalised attention.
Whether you are looking to list a significant gold holding, source a specific diamond for a collection, authenticate an inherited gemstone, or explore a business partnership, our team is ready to assist. We look forward to hearing from you.
Verified Specialists
GIA-trained gemologists and LBMA-certified metals experts handle every inquiry.
Strict Confidentiality
All client communications are protected under our ISO 27001-aligned privacy practices.
24-Hour Response
We respond to all inquiries within one business day. Prestige members receive priority 2-hour response.
Three Global Offices
London, Geneva, and Dubai — strategically positioned in the world's key precious metals markets.