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July Birthstone: Ruby Jewelry

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Yellow Gold Ruby Heart Flat Back Earring
Yellow Gold Ruby Heart Flat Back Earring
Yellow Gold Ruby Heart Flat Back Earring
Yellow Gold Ruby Heart Flat Back Earring
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From the Blog

Can I sleep in ruby flat back studs?

Yes: that's the whole point. The flat disc back sits flush against your skin, so no poking, no pressure points. These are the earrings that pass the pillow test every single time. Sweet dreams.

What's "back-first insertion," and why does it matter?

The smooth, flat gold backing enters your piercing first. This matters for two reasons: the threaded portion of the front post never touches your piercing or ear tissue during insertion, making it gentler on healing and comfortable for long-term wear. And because the flat back is the component sized to your piercing (you choose the post length based on your anatomy), it's also the precision-fit piece. The front post is one standard size across all styles, so the part that needs to sit just right against your ear goes in first.

Will 14k gold turn my skin green?

Nope. That green tint happens with plated or low-quality metals. Solid 14k gold is hypoallergenic and safe for sensitive skin. Wear it 24/7—your skin stays skin-colored. That's the Estella promise.

Why ruby?

Ruby is July's birthstone, but that's not why people keep coming back to it. It's the color: a deep, warm red that reads classic in a solitaire setting and modern in an emerald cut. Our ruby rings and necklaces feature real rubies in solid gold, designed for daily wear. And if you want to bring that color to your ear stack, our ruby flat back studs are sold as singles, so you place each one exactly where you want it.

What piercing placements work for flat backs?

Lobe, helix, tragus, conch, forward helix: basically anywhere on your ear. The low-profile design and short post lengths make them versatile for cartilage and soft tissue alike. Check our sizing guide for exact measurements.

How do I choose the right post length?

Start with your piercing location. Healed cartilage piercings (helix, tragus, conch, rook) typically sit best at 5–6.5mm. Standard lobes run 6.5–8mm, though thicker lobes or fresh piercings may need 8–10mm to accommodate swelling. Our full size guide breaks it down by piercing type, with exact measurements and a visual anatomy reference The rule of thumb: size up for fresh piercings, size down once healed.

Can I stack ruby rings with other metals?

Absolutely. Our 14k yellow gold plays beautifully with rose gold, white gold, even silver if that's your vibe. Mixed metals are very much a thing; lean into it.

How should I care for ruby jewelry?

Warm water, mild soap, soft cloth. That's it. Rubies are durable (9 on the Mohs scale), but avoid harsh chemicals and ultrasonic cleaners. Store pieces separately to prevent scratching. Easy.

Is this a good July birthstone gift?

The best. But honestly? Ruby works year-round. It's bold, it's classic, and it pairs with everything. Birthday, anniversary, "just because": Ruby doesn't need a reason.

More Details

14k Gold Ruby Jewelry
Red is a neutral, and our 14k Gold Ruby Jewelry proves it. From radiant Ruby Flat Back Studs (our signature "nap earrings" designed for poke-free sleep) to statement rings that bring the fire, this collection is designed to be lived in.
We use only solid 14k yellow gold, meaning every piece is hypoallergenic, waterproof, and heirloom-quality. Whether you’re shopping for a July birthstone gift or curating a luxurious ear stack, discover the rubies you’ll never want to take off.

Curate Your Ear with Ruby Flat Back Studs & Hoops
Here's the thing about piercings: they deserve better than cheap metal that turns your skin green and posts that stab you awake at 3 a.m. Enter our Ruby Flat Back Studs: the "nap earrings" you didn't know you needed.
The magic is in the mechanics. Internal threading means the smooth gold back slides in first, so no sharp edges ever touch your healing piercing. Helix? Perfect. Tragus? Built for it. Conch? Absolutely.
Back goes in first because that's the part sized to your piercing; the front post is one standard size across the board. Translation: a flush, made-for-you fit every single time. (Your cartilage deserves that after the mall kiosk era.)
Shapes range from classic round solitaires to sculptural marquise cuts, all bezel-set for a flush, snag-free fit. Pair a tiny ruby heart in your upper lobe with a diamond stud below; let the color lead and the sparkle follow.
Sold as singles, because your piercings aren't identical. Why should your jewelry be?

Ruby Huggie Earrings (That Actually Hug)
Some huggies pinch. Some huggies gap. Ours? They click shut with the kind of satisfying snap that makes you trust they're staying put: through spin class, through sleep, through that friend's wedding where you'll definitely cry.
Our Ruby Huggie Earrings come in designs that feel modern without trying too hard.The Ruby Charm Hoop in solid yellow gold adds a refined drop of colour to your ear, with one dangling ruby, bezel-set, swinging from a polished gold hoop. The kind of piece that dresses up a Tuesday. The Ruby Clicker Huggies in solid yellow gold sit close and clean: the kind of earring that looks intentional without looking like you tried. And that pavé ruby version? She's doing the most while weighing the least.
These aren't your grandmother's rubies. They're hypoallergenic, heirloom-quality, and sized for actual human ears. The hinged closure means no fumbling with tiny backs at your bathroom mirror. Just click, go, and forget they're there.
Until the compliments start. (And they will.)