Cartier Trinity #49 Diamond Au750 4.8g Ring
Shipping & Delivery
How does shipping work and what are the delivery times?
🇦🇺 Australia Shipping
All items are shipped from our Melbourne head office with tracked, registered, and insured Australia Post Express.
🌍 International Shipping
Sent via EMS (Express Mail Service) with comprehensive tracking and insurance.
📍 Store Collection - Toorak/Melbourne
You can collect your item from our head office once it's ready. We'll notify you via email when available.
What to bring: Order confirmation email and government-issued photo ID.
Authenticity Guarantee
How do you guarantee authenticity of second-hand luxury items?
🛡️ 12-Month Authenticity Guarantee
As a licensed second-hand dealer, we offer a 12-month guarantee from purchase date. If any item is proven inauthentic (which won't happen), we'll take it back with a full refund, no questions asked.
🔍 Dual-Location Authentication Process
Every luxury item undergoes thorough authentication at both our Japanese sourcing location and Melbourne headquarters, ensuring double verification.
🇯🇵 Japan Authentication
Operating under Japan's extremely strict resale laws, our team conducts initial authentication using industry-leading technology. Japan's rigorous legal framework requires thorough verification of provenance and authenticity.
🇦🇺 Melbourne Re-Inspection
Upon arrival in Australia, every item undergoes additional inspection by our Melbourne-based authentication specialists for absolute confidence in every piece.
🔬 Partnership with Entrupy Technology
We've partnered with Entrupy, a global leader in authentication technology. For eligible luxury bags from select brands (Hermès, Chanel, Louis Vuitton, Dior, Gucci, and others), customers can add an official Entrupy certificate for an additional fee.
Returns & Refunds
What is your returns policy for second-hand luxury items?
📸 Every Item Thoroughly Documented
We carefully document each item with detailed photos, videos, and comprehensive descriptions so you can shop with complete confidence. This detailed documentation helps ensure you know exactly what you're purchasing, which is why we focus our guarantee on authenticity rather than change of mind returns.
Our Returns Approach
🔍 Authenticity Guarantee
If any item is proven inauthentic, we issue a full refund including return shipping costs. This applies under our comprehensive 12-month authenticity guarantee.
🛡️ 12-Month Authenticity Guarantee
Our authenticity guarantee remains valid for 1 full year from date of purchase. If any item is proven inauthentic within this period, we provide a complete refund with no questions asked.
Questions about delivery or returns?
Contact our customer service team at: enquiries@lostxchange.com
We're here to help ensure your LostXchange experience is exceptional.
About LostXchange
Authentic luxury fashion from Japan to Australia — Making designer pieces accessible worldwide
🌏 Global Luxury Network
LostXchange connects Melbourne customers with Japan's premium pre-owned luxury market. Our dual-location operation ensures authentic designer pieces at accessible prices.
⚡ Curated Selection
From thousands of authenticated items weekly, we select standout luxury pieces for limited-time availability. Countdown timers indicate exclusive access windows before items move to other channels.
🛡️ Authenticity Guaranteed
Every item undergoes comprehensive authentication by experienced luxury specialists using industry-standard technology and detailed inspection methods.
- Expert physical inspection
- Technology verification
- Serial number validation
- Packaging authentication