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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
Reina London Blue Topaz Nose Ring in solid 14k gold with crown-set london blue topaz - for nostril piercings
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
Reina London Blue Topaz Nose Ring in solid 14k gold with crown-set london blue topaz - for nostril piercings
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

$994 $1,930 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
Reina London Blue Topaz Nose Ring in solid 14k gold with crown-set london blue topaz - for nostril piercings
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
Reina London Blue Topaz Nose Ring in solid 14k gold with crown-set london blue topaz - for nostril piercings
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

Sizing Piercing Jewelry

Choosing the right size ensures comfort, healthy healing, and a flawless look. Use this guide to understand gauge, length, and diameter, then confirm your fit with the conversion charts below.

What Is “Gauge”?

The gauge of your piercing is the thickness of the bar that passes through your piercing—i.e., the barbell’s thickness. Note the system is inverse: a lower number = thicker bar. For example, a 12G barbell is thicker than a 20G barbell.

Piercing Jewelry “Length”

The length of your piercing jewelry refers to the wearable span of a straight or curved barbell—the section that sits inside the piercing. It’s measured end-to-end on the bar and excludes any ends, balls, or charms.

measuring length of a flat back earring measuring length of a nose ring



measuring length of a straight barbell measuring length of curved barbell


Piercing Jewelry “Diameter”

The diameter is used for circular styles—hoops, captives, clickers, seam rings, and circular barbells. Measure from the innermost, widest point across the inside of the hoop.

measuring diameter of captive bead ring measuring diameter of circular barbell

Standard Piercing Sizes

Check the chart below for typical starting sizes. Like clothing, anatomy varies—your ideal size may differ.

💡 Tip: Measure a comfortable piece you already wear to confirm your fit.


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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

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
Product Details
Materials
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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 $990
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 $1,138
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 — $965

Est. Retail Value — $1,930

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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