Login

Country

Cart

Your cart is empty

GET $50 AUD OFF YOUR FIRST ORDER!

Each piece is authenticated and one of a kind. Enter your email to claim your welcome offer.
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant

Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant

Sale price$1,100.00 AUD
RRP $4,100.00
Save $3,000.00

How Layby Works

1

Pay 20%

Deposit

2

We hold it

Item reserved

3

Pay rest

Email link sent

4

Get item

Ship or collect

Perfect for higher-value items with no purchase limits. Unlike Afterpay, Layby works for any amount and you receive your item after full payment.

Payment Details

  • Deposit: 20% upfront (non-refundable)
  • Balance: 4 instalments over up to 8 weeks
  • Payments: we email you a link every 2 weeks — pay directly from your inbox
  • Early payoff: Pay anytime

Example

$2,500 bag = $500 deposit + 4 × $500 payments

Pickup available from our Toorak Store

Usually ready in 2 hours

Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant

Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant

Toorak Store

Pickup available, Usually ready in 2 hours

428E Toorak Road
Toorak VIC 3142
Australia

+61395229884

Condition Score: 8/10 · Very good condition ⓘ

Comes with Legitapp Authenticity Certificate. View details here.

Comes with Legitapp Authenticity Certificate. View details here.

SKU: 001147

Condition: In very good condition with light marks and light rhodium plating fading

Condition score: 8

Material: 18K white Gold with Natural Diamonds

Necklace length: 0.0 millimeters

Pendant length: 3.75cm x 1.22cm

Weight: 3.56 grams

RRP: AUD $4100.00

Inclusions: Original Box, Dust Bag
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant
Tiffany & Co. Tiffany Keys Diamond 18K White Gold Heart Key Pendant Sale price$1,100.00 AUD
RRP $4,100.00
Save $3,000.00
×

AUTHENTICITY GUARANTEED

Entrupy Certificate of Authenticity
This item includes Entrupy’s certification, guaranteeing 99.1% accurate authentication via AI and microscopy.

Verification Process:

  • 260x magnification scans materials, stitching, and hardware
  • AI compares data against verified luxury goods
  • Tamper-proof certificate confirms legitimacy

Your Guarantee:
Definitive proof this piece is genuine and investment-grade.

AUTHENTICITY GUARANTEED
×

CERTIFIED AUTHENTIC BY LEGITAPP

LegitApp Certificate of Authenticity

This item is 100% authenticated by LegitApp through:

  • Independent review by two professional authenticators
  • High-resolution inspection of materials, stitching, hardware, and branding
  • Serial number/marking verification against brand archives

Includes: LegitApp’s Certificate of Authenticity — definitive proof of legitimacy.

CERTIFIED AUTHENTIC BY LEGITAPP
×

Certified Authentic by Legit Grails

Legit Grails Certificate of Authenticity


This item is 100% authenticated by Legit Grails through:

  • Professional inspection with high-resolution photography
  • Detailed verification of materials, stitching, hardware, and tags
  • Serial number/marking analysis against brand archives

Includes: Legit Grails’ Certificate of Authenticity—definitive proof of legitimacy.

Certified Authentic by Legit Grails

Every item at Lost Designer meets strict verification standards. Bags and wallets are verified via Legitapps using dual human review, AI analysis and 200× microscopic imaging. Watches, designer clothing and high-value jewellery are authenticated through Legit Grails’ expert-reviewed digital portal. All other pieces are inspected in-house by our luxury specialists for brand consistency and quality.

What’s included: Original accessories are clearly listed in each product description. A complimentary Lost Designer dust bag is provided if the original is unavailable.

The Lost Designer Guarantee: Certified items are backed by a 100% refund including return shipping if ever disputed.

Dispatch: All orders ship from our Toorak boutique within 1 business day (excluding weekends and public holidays).

Shipping rates: Australia & New Zealand receive free tracked shipping via Australia Post Express. Worldwide shipping is a flat $49 AUD via EMS Express with full tracking.

Delivery times: Australia orders typically arrive within 1–2 business days after dispatch. International delivery varies by destination.

Click & Collect: Select “Pick Up In-Store” at checkout. Orders are prepared within 24 hours. Please bring your order confirmation and valid ID for collection.

Returns: We offer 7-day returns. A $55 restocking fee applies and return shipping is at the buyer’s expense. Items must be returned unworn, unused and in the exact condition received with all original packaging and inclusions. Returns are not accepted on items sold as brand new.

If your item is not as described: Contact us within 7 days of delivery with your order number and clear photo or video evidence via enquiries@lostdesigner.com.au or Instagram @lostdesignerau. We will review your claim promptly and advise on next steps.

If an item is proven inauthentic: You will receive a full refund, including return shipping, once verified by a trusted third-party authenticator.

Sell with us

Consign your pieces and let us handle authentication, photography and selling.

Sell with us ›

Authenticity

Every item is verified through trusted authentication partners and in-house checks.

Authenticity ›
Instagram Follow Bar
Chat Support

Support
Typically replies within an hour

Hi there 👋

How can I help you?
×