4mm Inlay Stainless Steel Ring Core
Ring Sizing Info
Ring Sizing Info
Our ring cores are made to USA sizes - The UK size quoted is the nearest equivalent, but may not be exactly the same. Typically, this works for the majority of customers - The best way to check the size is by using our "inner ring diameters" - see our ring size guide
4mm Inlay Stainless Steel Ring Core - F UK (USA 3) Note: This is a BACK-ORDER
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Delivery
Delivery
UK DELIVERY
We use DPD Local to deliver the majority of our parcels.
DPD delivery is typically charged at a flat rate of £5.99 inc VAT this will be confirmed in your shopping cart prior to placing your order. (This is a subsidised price, we pay more than this). You can add many products to your cart and this rate will not change.
DPD offer a next day delivery - This is a next working day delivery
and does not include weekends. Occasionally DPD may deliver your order on a Saturday or Sunday.
Next day delivery is not guaranteed.
Where DPD do not service your delivery area, we use Royal Mail.
Royal Mail Tracked 48 aims to deliver within 2-3 days, Royal Mail Tracked 24 aims to deliver with 24 hours.
You will see these charges in your shopping cart once you have entered your address.
We reserve the right to use alternative postal providers as and when necessary.
OVERSEAS ORDERS
We are not currently sending overseas due to the large number of delays and parcels going missing. You can use a mail forwarding service.
Typically rings should be made to a standard size, however you will find that many ring size guides differ.
Our rings are made to the standard USA sizes, we then provide a guide as to the nearest UK size (There is not always an exact match).
We recommend using a ring sizer mandrel with both UK & USA sizes.
Below you will find a ring size guide which also shows the inside diameter of of our rings which should be used for a more accurate measurement.
| US size | Inside Diameter | Approx UK size |
| 3 | 14.0mm | F |
| 3.5 | 14.4mm | G |
| 4 | 14.8mm | H |
| 4.5 | 15.2mm | I |
| 5 | 15.6mm | J 1/2 |
| 5.5 | 16.0mm | K 1/2 |
| 6 | 16.5mm | L 1/2 |
| 6.5 | 16.9mm | M 1/2 |
| 6.75 | 17.1mm | N |
| 7 | 17.3mm | O |
| 7.5 | 17.7mm | P |
| 8 | 18.1mm | Q |
| 8.5 | 18.5mm | R |
| 9 | 18.9mm | S |
| 9.5 | 19.4mm | S 3/4 |
| 10 | 19.8mm | T 1/2 |
| 10.5 | 20.2mm | U 1/2 |
| 11 | 20.6mm | V 1/2 |
| 11.5 | 21.0mm | W 1/2 |
| 12 | 21.4mm | Y |
| 12.5 | 21.8mm | Z |
| 13 | 22.2mm | Z +1 |
| 13.5 | 22.6mm | Z +2 |
| 14 | 23.0mm | Z +3 |
| 14.5 | 23.4mm | Z +4 |
| 15 | 23.8mm | Z +5 |
| 15.5 | 24.2mm | Z +6 |
| 16 | 24.6mm | Z +7 |
4mm Inlay Stainless Steel Ring Core
Description
Description
4mm Inlay Stainless Steel Ring Core
These 4mm inlay stainless steel ring cores are comfort fit, made from 316L Stainless Steel, each is hand polished and finished in the factory.
316L stainless steel has hypoallergenic properties and very high resistance to corrosion
The width of the ring core is 4mm and has a 2mm groove for your inlay material.
Flat edges/rims for the modern look looks great with crushed opal inlay
This style of inlay ring core comes in 3 widths: 4mm, 6mm and 8mm
Sizes available from F UK (USA 3) to Z+1 UK (USA 13)
Customers praised this stainless steel ring core for its excellent quality and perfect 4mm width for creating custom inlay rings with opal, ruby, and crystal stones. Shoppers said it's "true to size" and "perfect every time." Fast delivery was consistently highlighted, with next-day service noted. Ideal for jewelry makers creating channel and birthstone rings.
- Perfect for opal channel rings, true to size, fast delivery and perfect every time
- Just the right width to create a ruby/rose crystal birth stone ring
- Ordered and delivered next day. Excellent
These are perfect for opal inclusion channel rings, true to size, really fast delivery and perfect every time ♥️
Great product
Not used as yet. Quality looks good.
Just the right width to create a ruby/rose crystal birth stone ring for my wife
Awesome really nice quality.
Perfect Thank you.
Perfect Thank you.
Excellent will buy again. thank you
Orderd and deliverd next day. Excellent Thank you.
Excellent
Excellent
Top quality
Good quality (haven't had chance to use it yet)
Good quality (haven't had chance to use it yet)
Top quality
Great
Great
Very good
Very good
Excellent
Excellent
Payment & Security
Payment methods
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