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4mm Astra Diamond Nose Ring
Close-up of an woman's nose wearing Astra 6-prong 4mm diamond nose stud earring.
4mm Astra Diamond Nose Ring in Yellow Gold
Side view of the Astra diamond nose ring
Front view of the diamond Astra setting
Nose ring backing type guide
4mm Astra Diamond Flat Back Stud in 14k Yellow Gold
4mm Astra Diamond Flat Back Stud in 14k White Gold
Front view of the diamond Astra setting in white gold
4mm Astra Diamond Flat Back Stud in 14k Rose Gold
Front view of the diamond Astra setting in rose gold
4mm Astra Diamond Nose Ring
Close-up of an woman's nose wearing Astra 6-prong 4mm diamond nose stud earring.
4mm Astra Diamond Nose Ring in Yellow Gold
Side view of the Astra diamond nose ring
Front view of the diamond Astra setting
Nose ring backing type guide
4mm Astra Diamond Flat Back Stud in 14k Yellow Gold
4mm Astra Diamond Flat Back Stud in 14k White Gold
Front view of the diamond Astra setting in white gold
4mm Astra Diamond Flat Back Stud in 14k Rose Gold
Front view of the diamond Astra setting in rose gold
Home 4mm Astra GIA 0.25ct Diamond Nose Ring

4mm Astra GIA 0.25ct Diamond Nose Ring

$1,107 $885.60 20% OFF $2,152 Est. Retail Value
4mm Astra Diamond Nose Ring
Close-up of an woman's nose wearing Astra 6-prong 4mm diamond nose stud earring.
4mm Astra Diamond Nose Ring in Yellow Gold
Side view of the Astra diamond nose ring
Front view of the diamond Astra setting
Nose ring backing type guide
4mm Astra Diamond Flat Back Stud in 14k Yellow Gold
4mm Astra Diamond Flat Back Stud in 14k White Gold
Front view of the diamond Astra setting in white gold
4mm Astra Diamond Flat Back Stud in 14k Rose Gold
Front view of the diamond Astra setting in rose gold
4mm Astra Diamond Nose Ring
Close-up of an woman's nose wearing Astra 6-prong 4mm diamond nose stud earring.
4mm Astra Diamond Nose Ring in Yellow Gold
Side view of the Astra diamond nose ring
Front view of the diamond Astra setting
Nose ring backing type guide
4mm Astra Diamond Flat Back Stud in 14k Yellow Gold
4mm Astra Diamond Flat Back Stud in 14k White Gold
Front view of the diamond Astra setting in white gold
4mm Astra Diamond Flat Back Stud in 14k Rose Gold
Front view of the diamond Astra setting in rose gold

Diamond Size

4.0mm
2.5mm Astra 3.5mm Astra 3.0mm 4.0mm
Size Chart
Find Your Perfect Fit
✦
Nose ring size guide: backing styles (twist, bone, L-post, straight post, flat back, end only), 18G and 20G gauge, and 6mm/9mm wearable length for nose studs

How to size a nose ring

A nose stud is defined by three things — its gauge (the bar's thickness), its backing style (how it stays in place), and its wearable length (the part that sits inside your piercing, which the style sets).

Gauge — the thickness of the bar

Most nose piercings use 20G (0.8mm) or 18G (1.0mm). Match the gauge to your piercing so the jewelry sits securely — the scale runs in reverse, so a smaller number is a thicker bar.

Backing style & length

The backing holds your stud in place, and it sets the wearable length:

  • Twist, Bone & L-Post — 1/4" (6mm) wearable length
  • Flat Back — 18G, 1/4" (6mm) wearable length
  • Straight Post — 3/8" (9mm), and can be bent to your fit
  • End Only — the decorative front on its own; a backing is sold separately

Not sure which is right? Match a nose stud that already fits you, or chat with a Piercing Advisor below.

Still not sure about your size?
Our Piercing Advisors will help you find the right fit for your piercing.
Or add a Piercing Advisor™ fitting to your order › Need a size we don’t carry? Request custom sizing ›
Show info modal
Find Your Perfect Fit
✦
info popup jeweler direct
Still not sure about your size?
Our Piercing Advisors will help you find the right fit for your piercing.
Or add a Piercing Advisor™ fitting to your order › Need a size we don’t carry? Request custom sizing ›
Find Your Perfect Fit
✦
Promotional text for a free piercing advisor service with details on customization and quality assurance.
Still not sure about your size?
Our Piercing Advisors will help you find the right fit for your piercing.
Or add a Piercing Advisor™ fitting to your order › Need a size we don’t carry? Request custom sizing ›
i
Made to order: Ready in 1–2 weeks

Solid 14k Gold

Jeweler Direct

Handmade

Piercing Advisor

Ethical Luxury

Lifetime Warranty

Looking for something different? Request a custom design →

Product Description

Description

Looking for more options? Browse our full collection of diamond nose rings.

Make a statement with the Astra 4mm Diamond Nose Ring, a bold expression of fine piercing jewelry crafted to shine from every angle. Featuring a genuine diamond secured in Fresh Trends’ signature 6-prong setting. Handcrafted in solid 14k gold, the 4mm diamond delivers striking sparkle while maintaining a polished, elevated feel perfect for everyday luxury.

  • Features a .25ct (4mm) GIA Certified Diamond
  • Diamond Clarity: VS1
  • Solid 14k Gold | Hypoallergenic & Nickel-free
  • Available styles: Twist, Bone, L Post, Straight Post, Flatback, End Only - Pushpin
  • Available in 20G and 18G
  • Made to order in the USA

BACKING STYLES:

  • Twist, Bone & L-Post have 1/4" (6mm) wearable length
  • Straight-Post has 3/8" (9mm) wearable length and can be bent to your specifications.
  • Flat Back is 18G, 1/4" (6mm) wearable length
  • End Only option does not include a backing. Backing sold separately here.
Product Details
Materials
Shipping

Pairs Well With

Gold Astra 4mm diamond stud flat back earring with a clear gemstone on a reflective surface 4mm Astra Diamond Flat Back Stud in 14k Rose Gold
4mm Astra GIA 0.25ct Diamond Flat Back Stud $1,105
FreshTrends mint green travel jewelry box, closed front view with gold FT Est. 2003 logo Close-up of travel jewelry box interior holding gold piercing studs, earrings, and CZ body jewelry
Travel Jewelry Box $17
14k yellow gold 4mm diamond flat back labret with martini prong setting, angled product shot 14k rose gold 4mm diamond flat back labret, overhead angle showing diamond fire and prong detail
4mm Diamond Low-Set Prong 14k Gold Flat Back Earring $1,072
Close-up front view of 3mm oval-cut diamond in white gold 4-prong setting, showcasing brilliant facets 14k rose gold oval diamond nose ring straight post style, left-facing angled view with warm pink gold tone
3mm Oval-Cut Diamond Nose Ring $295
14k yellow gold 4mm CZ bezel-set flat back labret resting on linen surface, side angle view 14k rose gold 4mm diamond bezel-set flat back earring, overhead angled view showing warm gold tone
4mm Diamond Bezel-Set 14k Gold Flat Back Earring $1,309
Astra II belly ring in yellow gold with moissanite gemstone on a glass surface. 14k white gold navel ring with 8mm round amethyst in six-prong setting, front view
Astra II Gem Navel Ring $486

Jeweler-Direct Pricing

Jeweler-Direct means crafted, just for you. By skipping the middleman, we eliminate traditional retail markups — so you can enjoy luxury piercing jewelry without the inflated price.

Fresh Trends Price — $1,076

Est. Retail Value — $2,152

Fresh Trends Piercing Advisor™

Our complimentary Piercing Advisor™ service ensures your jewelry fits perfectly. After your order, a specialist reviews your selection, verifies your size, and guides you through any adjustments. For jewelry to be eligible for an adjustment, FreshTrends Piercing Advisor™ must be added to your cart at the time of original purchase.

Why It Matters:

• Anatomy varies, and size is crucial

• A specialist confirms your fit before we craft your piece

• You get a flawless, comfortable result—every time

Piercing Advisor Service

Handcrafted Just For You!

Our in-house jewelry designer and artisans create one-of-a-kind piercing jewelry from solid 14k gold and 950 platinum, always 100% nickel-free.

Each piece is made-to-order and never mass-produced, allowing for many gemstone and size options for the perfect fit. We take pride in hand-crafting fine body jewelry in the USA.

Fresh Trends Fine Jewelry

Because every piercing deserves its masterpiece.

Ready to Gift

Your jewelry arrives in our signature packaging—a keepsake box with a soft green pouch and a Wear & Care Guide. Premium pieces are showcased in an LED presentation box that elevates every gifting moment.

Fresh Trends Packaging

Fresh Trends® Lifetime Warranty

Every piece we craft is designed for lifelong wear. If your jewelry ever shows a manufacturing defect, we’ll repair or replace it—complimentary, for life.

Lifetime Confidence. Handmade Quality.

Gold earring with clear gemstones on a soft pink fabric background

Sustainable Jewelry

We use recycled metals to help reduce the carbon footprint of manufacturing and the negative impact of metal mining.

We plant one new tree per order in partnership with Ecologi to help restore nature and reduce the carbon footprint of our operations.

ecology

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