Crescent Collection

The Luna Smart Ring Jacke

$399.00

Metal

Ring size

Match your smart ring's size below. Jackets are made to fit that exact size — no universal sizing.

US Size	Diameter (mm)	Circumference (mm)
5	15.7	49.3
6	16.5	51.9
7	17.3	54.4
8	18.1	57.0
9	18.9	59.5
10	19.8	62.1
11	20.6	64.6
12	21.4	67.2
13	22.2	69.7

Tip: Order the same size as your smart ring. If your ring is loose and spins, consider sizing down by one.

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Handmade in North Dakota

Real precious metals — never plated

Bezel-set stones — never glued

Tested on a real ring before it ships

Made to order, ships in 4 weeks.

Each jacket is individually cast, hand-finished, and stone-set. We don't keep inventory because every piece is made for you.

Product Details

Simple, smooth, and quietly stunning. The Luna features a hand-set round stone bezel-set on a clean, polished band — no fuss, just a single point of sparkle sitting like a little moon on your hand. Choose from moissanite or the range of colored gemstones shown in the photos, from citrine to lab rubies and sapphires.

Simply slip it over your smart ring and go. Nothing attaches, nothing interferes, and your tracking works exactly like it always has.

We created the very first smart ring jacket, and every piece since has been designed, cast, and finished by the two of us in our North Dakota studio. Each one is made to order, crafted in your choice of sterling silver or 10K yellow solid gold, sized to fit your Oura Gen 3, Gen 4, Gen 5, ceramic, or RingConn.

Choose your metal, smart ring brand, ring size, and stone from the options listed.

The image shown is a photograph of a finished piece. Sterling silver jacket with a round Azotic Delicious Topaz is shown, fitted for an Oura Gen 3 or Gen 4. Your piece will be handcrafted by us, cast and finished entirely in our studio — made just for you. If you select a different smart ring brand, the fit and proportions will be adjusted slightly to accommodate the sizing needed for your specific ring. As with all handmade jewelry, slight variations in texture and finish are part of what makes your piece one of a kind.

Sterling Silver .925 — genuine, not plated. Tarnish-resistant alloy.
10K Gold Solid gold — not filled, not plated. Lasts a lifetime.
Stones Lab-grown or natural. Hand-set in bezel settings.
Setting Traditional bezel — metal wraps the stone. Never glued.

Treat it like fine jewelry. Remove for workouts and water. Clean with a soft cloth. Store in the provided case when not in use. Avoid harsh chemicals.

Order the same size as your smart ring. If you wear a size 8 Oura, order a size 8 jacket. We craft each piece to fit that exact size — no universal sizing, no guesswork.

Tip: If your smart ring is loose and spins on your finger, consider sizing down by one. The jacket will help hold it in place.

Every jacket is tested on a real smart ring before it ships. If there's a fit issue, reach out within 30 days and we'll make it right.

Production time: 2–3 weeks. Every jacket is made to order — casting, finishing, stone-setting, and quality control each take time. We don't rush it.

Shipping: Currently shipping throughout the United States. Your jacket arrives in an unmarked box with custom packaging inside, polished and ready to wear.

Returns: Because each piece is custom-made to your size, stone, and metal selection, all sales are final. If you need a size adjustment, contact us and we'll work with you. If your jacket arrives damaged, email support@smartringjackets.com with photos and we'll replace or repair it.

Diagram showing jacket sliding onto Oura ring

New to ring jackets?

It slides on in seconds. Your ring does the rest.

A smart ring jacket wraps around your existing ring from underneath — two precious-metal bands frame it, and a hand-set stone sits on top. Your ring stays in the center, fully visible and fully functional. Think of it as a styled setting for the tech you already wear.

Sensors keep working Heart rate, sleep, activity — all unaffected.

On and off in seconds Swap styles for different occasions.

Custom fit to your size No gaps, no wobble. Sized to your ring exactly.

Patent pending design The original. We invented this category.

Made by hand, by us

Every jacket that ships was made in our garage in Minot, North Dakota.

We're Brooke and Shane — the only two hands that touch your ring from casting to shipping. No factory, no overseas production, no middleman. Just a husband-and-wife team who care about getting it right.

— Brooke & Shane Jensen

Customer Reviews

Bailey P. · ✓ Verified Buyer

2 weeks ago

★★★★★

It feels less like a bland health tracker on my finger and more like a beautiful accessory that matches my aesthetic. The craftsmanship is incredible — you can tell each piece is made with real care. I couldn't be happier with how it elevated both the look and experience of wearing my Oura ring.

Style: Double Marquise · Metal: Sterling Silver · Stone: Lab Emerald

Sarah M. · ✓ Verified Buyer

1 month ago

★★★★★

I used to take my Oura off for date nights and weddings. Not anymore. The jacket completely transforms the look — people don't even realize it's a smart ring underneath. The moissanite catches light beautifully. Worth every penny.

Style: Double Marquise · Metal: Sterling Silver · Stone: Moissanite

Jessica R. · ✓ Verified Buyer

1 month ago

★★★★★

The fit is perfect — no movement at all. Slides on and off easily when I want to switch styles. I already ordered a second one in pink sapphire. The 2-week wait is worth it for this level of quality.

Style: Double Marquise · Metal: Sterling Silver · Stone: Lab White Sapphire

Amanda K. · ✓ Verified Buyer

2 months ago

★★★★★

I was skeptical about how the charging and tracking sensors would handle a metal frame wrapping over it, but it works flawlessly. Zero data drops on my health app and it turns heads everywhere I go. Simply brilliant fine jewelry engineering.

Style: Double Marquise · Metal: 10K Solid Gold · Stone: Moissanite