Contact Us
Have a question about a model, upcoming drop, pre-order, or existing purchase? We’re happy to help.
You can reach CastDiemonds by email at:
We typically respond within 1–2 business days.
Order Support
For questions about an existing order, please include your:
- Full name
- eBay username
- Order number
- Brief description of your question
Including these details will help us locate your order and respond more quickly.
Pre-Orders and Upcoming Drops
Questions about a pre-order, product availability, or an upcoming CastDiemonds drop are always welcome. Please include the name of the model you’re asking about.
Please note that submitting a pre-order request does not require payment and does not guarantee availability. When inventory arrives, available models are listed for purchase through our official eBay store.
Stay Connected
Subscribe to CastDiemonds for free to receive updates about upcoming releases, pre-orders, member pricing, special offers, and limited drops.
Thank you for visiting CastDiemonds and supporting our collector-focused small business.