Adding ADP as a Keyholder of a Guardian Vaults Sydney Box

For diamonds stored at Guardian Vaults in Sydney, you may post your keys and collateral to us at ADP, authorizing us to become your keyholder. Please note, Australian Diamond Portfolio is not responsible for keys lost in transit to us, and do recommend handing them over in person wherever possible.


1. Submit authorisation form to Guardian Vaults

Print and sign a completed copy of this form authorizing ADP to hold the keys to your safety deposit box at Guardian Vaults. Send a scan of your completed form to  [email protected] as well as [email protected].

Download Authorisation Form  

2. Get a shipping envelope, satchel or box

Visit your local Australia Post Office and purchase any Express Post envelope, satchel or box, with tracking. Examples can be found below.

3. Complete and pack your parcel

Please post to the following address:

ADP @ Guardian Vaults
LG/151 Castlereagh Street
Sydney NSW 2000

Place both of your keys and any other certificates/collateral you may need to send in the prepaid Express Post envelope. Please note both of your keys has to be returned in order for ADP to be your keyholder. 

All collateral such as your certificate(s), tender box and books (if applicable) need to be returned to ADP for the sale to be completed.

4. Email us your tracking information

Take an image of the tracking number (see below image for reference) and email this to us at [email protected].

5. Post your parcel

Place your envelope/box in an Australia Post Express Mailbox or visit your local Australia Post Office.

6. We verify your diamond(s) and collateral

Once we have received your keys, we will verify the contents of your box and send you a confirmation email. If you have any queries please call our office on 02 9238 2727.

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