CASTOR pairs tungsten with a blue groove. Explore the close-up views to see the design from different angles.
Engraved and shipped from our Texas workshop.
Shipping details · Returns & exchanges
Engraved in Texas
Personalized in our workshopComfort fit
A smooth interior profileLifetime sizing program
Here for the years aheadReady to give
A matching gift box included
The details make the difference
The details.
The difference.
The blue groove is the focal point of CASTOR. Take a closer look at the texture, edges, and profile in the product photographs.
- Material
- tungsten
- Design
- blue groove
- Fit
- Comfort fit
A closer look
Character in the details.
From our customers
Your story starts here.
A personal finishing touch
Your words.
Your meaning.
A name, a date, or a message that matters. Explore the engraving options for CASTOR and make your choice personal.
Explore engraving options →How do I choose my size?
Use our ring size guide or ring sizer tool. The available sizes and widths are shown above.
What can I have engraved?
Choose from the engraving options available for this ring above, or explore our engraving service.
When will my ring arrive?
Visit our shipping page for current processing and delivery information.
What if my fit changes?
Explore the Aydins Lifetime Sizing Program and Warranty.
Full product description
The Twin Blue Groove Detail
The CASTOR uses a black tungsten body with twin blue grooves placed off center. The grooves create movement across the ring without adding a separate inlay, and the blue detail gives the dark band a sharper personality.
Who It's For
The CASTOR is for the buyer who likes black rings but wants a controlled hit of color. You want something modern and clean, with detail that does not take over the whole band.
Key Features
- Black tungsten with twin blue off-center grooves
- Domed profile
- Comfort-fit interior
- Inside and outside engraving available
- Inspected before shipping
Make it yours. Make it personal.
CASTOR · $266.00 CAD