Blue Sapphire Emerald Cut Eternity Ring – Full Eternity
The Karat Store · Handcrafted in Solid Gold
Emerald-cut sapphires take centre stage in the Blue Sapphire Emerald Cut Eternity Ring, crafted in solid 10ct, 14ct or 18ct gold. The emerald cut is a step cut. Instead of scattered sparkle it gives long, clean flashes of light, often called the hall-of-mirrors effect, for a quiet, Art Deco look. Stones run all the way around the band for unbroken sparkle, a traditional symbol of never-ending love.
It makes a meaningful anniversary, push present or wedding ring, and it stacks beautifully with an engagement ring. Available in yellow, white or rose gold and UK ring sizes D to Z+1.
The band features beautifully arranged emerald cut blue sapphires , each measuring 3x4 mm , that radiate a captivating blue hue, offering a vibrant pop of colour against the warm gold backdrop.
Yes. Sapphire is 9 on the Mohs scale, second only to diamond, so it resists scratches and suits jewellery you wear every day.
The emerald cut is a step cut. Instead of scattered sparkle it gives long, clean flashes of light, often called the hall-of-mirrors effect, for a quiet, Art Deco look. Step cuts show clarity clearly, so a high-clarity stone is the best choice.
Stones run all the way around the band for unbroken sparkle, a traditional symbol of never-ending love. A full eternity ring has stones all the way round, which looks spectacular but cannot easily be resized later. A half eternity ring can usually be resized.
18ct gold (75% pure gold) has the richest colour and a luxurious weight. 14ct gold (58.5% pure gold) is the most popular balance of colour, durability and value. 10ct gold (41.7% pure gold) is the hardest-wearing and most affordable option. Every option is solid gold all the way through, not plated.
White gold is finished with a bright rhodium plating. Over time, usually every 12 to 18 months with daily wear, it can soften to a warmer tone. Any jeweller can re-plate it quickly to restore the bright white finish.
This ring is made to order in UK sizes D to Z+1. Because stones run all the way round the band, a full eternity ring cannot easily be resized, so please check your size with a jeweller or our ring size guide before ordering.
Each piece is made to order. We craft and dispatch it within 4 working days, and tracked delivery usually takes around 4 more working days, so allow about 8 working days in total. Delivery is free and all taxes are included in the price shown, so there is nothing extra to pay when it arrives.
Explore more: Eternity Rings · Sapphire Jewellery · Rings
Every piece is cast and finished by hand in genuine solid gold — choose 10ct, 14ct or 18ct in yellow, white or rose gold. Never plated, never filled, made to be worn for a lifetime.
Stones are conflict-free: lab-grown diamonds, moissanite and hand-selected natural gemstones, each set and polished by our artisans.
Your jewellery is crafted to order in your chosen gold colour, carat and size.
All ring sizes are shown in UK sizes (letters), and every size is the same price within each gold colour and carat. Half sizes (e.g. L½) are available in the size selector.
| UK | Inside diameter (mm) | Inside circumference (mm) |
|---|---|---|
| H | 14.7 | 46.1 |
| I | 15.1 | 47.4 |
| J | 15.5 | 48.7 |
| K | 15.9 | 49.9 |
| L | 16.3 | 51.2 |
| M | 16.7 | 52.5 |
| N | 17.1 | 53.8 |
| O | 17.5 | 55.0 |
| P | 17.9 | 56.3 |
| Q | 18.3 | 57.6 |
| R | 18.7 | 58.9 |
| S | 19.1 | 60.2 |
| T | 19.6 | 61.4 |
| U | 20.0 | 62.7 |
| V | 20.4 | 64.0 |
| W | 20.8 | 65.3 |
| X | 21.2 | 66.5 |
| Y | 21.6 | 67.8 |
| Z | 22.0 | 69.1 |
| Z+1 | 22.4 | 70.4 |
Not sure of your size? Measure the inside of a ring that already fits, use a ring sizer, or visit a local jeweller for a professional sizing. We are happy to help — get in touch before you order.
Remove your jewellery before swimming, cleaning or the gym. Clean gently with warm water, mild soap and a soft brush, then dry with a lint-free cloth. Store each piece separately to prevent scratches.
Solid Gold, Always
Crafted in genuine 10ct, 14ct or 18ct gold — never plated, never filled.
Made to Order
Handcrafted for you and dispatched within 4 working days.
Conflict-Free Stones
Lab-grown diamonds, moissanite and hand-selected gemstones.
Personal Guidance
Questions on ring size, gold or stones? We are here to help.
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