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Crafted just for you, this customisable piece can be made from new materials or reimagined using gemstones from jewellery you already treasure.
Behold, The Cosmos Rose Gold Signet Ring, a sleek and minimal adornment, perfect for stacking, gifting, and celebrating.
Why we love this ring:
- 3.65mm x 17.7mm marquise-shaped signet brings a unique look to a traditional style
- Solid signet for increased durability, perfect for daily wear
- Band width approx. 1.6mm, thickness approx. 1.75mm
- High polish finish for a timeless gleam
- Crafted in your choice of recycled 9ct, 14ct or 18ct rose gold for a lifetime of shine
Thoughtfully handcrafted with recycled rose gold sourced via our in-house jewellery recycling initiative, Gold Swap.
Rose Gold
Shipping:
See here for our full shipping policy.
Returns:
Our fine jewellery is covered by a 12 month warranty period from the date of purchase.
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All payments on moltenstore.com are processed via our secure payment gateway.
Secure your dream jewellery sooner with flexible payment methods
Offset your purchase by swapping old jewellery for $100's in store credit with Gold Swap.
Shop with Afterpay or Zip, online & in-store
Use any combination of payment type at checkout.
Going in together? Split the payment between you and someone else (or multiple people).
Secure your purchase with a 25% deposit & pay the remainder over 12 weeks.
Use any combination of payment type at checkout.
Each piece in your order comes individually boxed in premium Molten Store signature packaging. Charms purchased with compatible jewellery pieces are styled and packaged together.
Need help with fit and sizing? Don't hesitate to reach out to our team or visit us in store to get professionally sized.
| All sizes | US sizes | Europe sizes | Finger circumference in MM | Diameter of ring In MM |
|---|---|---|---|---|
| F | 3 | 4.25 | 44.20 | 14.07 |
| F 1/2 | 3 1/4 | 4.75 | 44.80 | 14.27 |
| G | 3 1/2 | 5.5 | 45.50 | 14.48 |
| G 1/2 | 3 3/4 | 6 | 46.10 | 14.68 |
| H | 4 | 6.75 | 46.80 | 14.88 |
| H 1/2 | 4 1/4 | 7.5 | 47.40 | 15.09 |
| I | 4 1/2 | 8 | 48.00 | 15.29 |
| J | 4 3/4 | 8.75 | 48.70 | 15.49 |
| J 1/2 | 5 | 9.25 | 49.30 | 15.70 |
| K | 5 1/4 | 10 | 50.00 | 15.90 |
| K 1/2 | 5 1/2 | 10.5 | 50.60 | 16.10 |
| L | 5 3/4 | 11.25 | 51.20 | 16.31 |
| L 1/2 | 6 | 11.75 | 51.90 | 16.51 |
| M | 6 1/4 | 12.5 | 52.50 | 16.71 |
| M 1/2 | 6 1/2 | 13.25 | 53.10 | 16.92 |
| N | 6 3/4 | 13.75 | 53.80 | 17.12 |
| N 1/2 | 7 | 14.5 | 54.40 | 17.32 |
| O | 7 1/4 | 15 | 55.10 | 17.53 |
| O 1/2 | 7 1/2 | 15.75 | 55.40 | 17.73 |
| P | 7 3/4 | 16.25 | 56.30 | 17.93 |
| P 1/2 | 8 | 17 | 57.00 | 18.40 |
| Q | 8 1/4 | 17.5 | 57.60 | 18.34 |
| Q 1/2 | 8 1/2 | 18.25 | 58.30 | 18.54 |
| R | 8 3/4 | 19 | 58.90 | 18.75 |
| R 1/2 | 9 | 19.5 | 59.50 | 18.95 |
| S | 9 1/4 | 20.25 | 60.20 | 19.15 |
| S 1/2 | 9 1/2 | 20.75 | 60.80 | 19.35 |
| T | 9 3/4 | 21.5 | 61.40 | 19.56 |
| T 1/2 | 10 | 22 | 62.10 | 19.76 |
| U | 10 1/4 | 22.75 | 62.70 | 19.96 |
| U 1/2 | 10 1/2 | 23.25 | 63.40 | 20.17 |
| V | 10 3/4 | 24 | 64.00 | 20.37 |
| V 1/2 | 11 | 24.75 | 64.60 | 20.57 |
| W | 11 1/4 | 25.25 | 65.30 | 20.78 |
| W 1/2 | 11 1/2 | 26 | 65.90 | 20.98 |
| X | 11 3/4 | 26.5 | 66.60 | 21.18 |
| X 1/2 | 12 | 27.25 | 67.20 | 21.39 |
| Y | 12 1/4 | 27.75 | 67.80 | 21.59 |
| Z | 12 1/2 | 28.5 | 68.50 | 22.00 |
Every bespoke piece is crafted using recycled Australian gold and platinum, honouring our commitment to conscious craftsmanship.
We source our diamonds and coloured gemstones responsibly, working only with trusted suppliers who meet our ethical standards. Our diamonds are conflict-free and come with GIA or IGI certification.
We can reimagine your existing gemstones into this design, preserving memories while creating something entirely new.
Learn more
From resizing to future care, we’re here to support your piece for life.
Give your old jewellery new life with Gold Swap — recycle your gold and put its value toward your new bespoke piece.
You can start production with a 50% deposit and pay the balance when your jewellery is complete.
Paying for your purchase is easy and secure. We offer flexible payment methods, available for our in-store & online shoppers.
All bespoke creations include complimentary express shipping, insured for peace of mind.
Made for you, with you
Whether you’re reimagining a treasured piece or creating something entirely new, our bespoke service brings your story into every detail — shaped by your vision and guided by our expertise, from gemstone selection to design refinement.
I’ve turned a very sentimental and precious necklace into the ring of my dreams using the gold swap initiative. Hannah and the incredible team at Molten have been such a pleasure to work along side with making my vision come to life. I couldn’t fault the process and the end result is so stunning and exactly what I had in mind.
Google Review
The staff was not only friendly but also incredibly knowledgeable about their products. They helped me make informed decisions about the pieces.
Store Review
One of my favourite jewellery stores in Brisbane. All the items I have bought and worn from Molten are my favourite pieces and I always get compliments when wearing them. If you want unique, stylish pieces, shop at Molten.
Google Review
The entire process has been seamless, from purchasing, resizing through to pickup. All of the ladies I dealt with were extremely helpful, bubbly and made our experience feel extra special, keeping us informed with frequent email or phone updates. We cannot wait to use them for our wedding bands as well!
Brisbane, Australia
Purchased my wedding band with the girls on James Street and they were amazing.
Google Review
The team at Molten Store are so helpful and lovely to deal with! My mum and I had custom rings made using the Gold Swap program and the girls were so patient and kept us informed at every stage. Both of our rings are so beautiful. Definitely recommend!
Google Review
Great friendly service, especially for a guy who knows nothing about jewellery. They helped me and put me in the right direction for a present.
Google Review
I have been constantly blown away by Molten Store. They have gone above and beyond every time I've reached out with a query and the professionalism, understanding and patience has definitely secured a return client.
Google Review
