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14k yellow gold 3mm diamond flat back stud with threadless push-pin shown separated from backing
14k yellow gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled view
Size comparison of 1.7mm to 3.0mm diamond flat back studs worn in four ear piercings on model
Four 14k yellow gold diamond flat back labret studs in graduated sizes displayed on warm stone surface
3mm VS1 diamond flat back stud shown in model's pierced nose, side profile demonstrating subtle fit
14k white gold 3-prong VS1 diamond labret end held between two fingers for size reference
Close-up of 3mm VS1 diamond in 3-prong white gold setting resting on fingertip, showing tiny scale
Side profile of 14k yellow gold 3mm diamond flat back labret stud showing post length and flat disc backing
3mm VS1 diamond flat back labret stud shown in 14k yellow gold, rose gold, and white gold from above
Flat back labret sizing guide showing 18G and 16G gauges from 5mm to 9.5mm with ear piercing map
14k white gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Diagram comparing threadless push-pin and threaded end styles for 14k gold diamond flat back labret stud
14k rose gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Close-up top-down view of 3mm VS1 diamond in 14k white gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k yellow gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k rose gold 3-prong push-pin end, showcasing facets
14k yellow gold 3mm diamond flat back stud with threadless push-pin shown separated from backing
14k yellow gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled view
Size comparison of 1.7mm to 3.0mm diamond flat back studs worn in four ear piercings on model
Four 14k yellow gold diamond flat back labret studs in graduated sizes displayed on warm stone surface
3mm VS1 diamond flat back stud shown in model's pierced nose, side profile demonstrating subtle fit
14k white gold 3-prong VS1 diamond labret end held between two fingers for size reference
Close-up of 3mm VS1 diamond in 3-prong white gold setting resting on fingertip, showing tiny scale
Side profile of 14k yellow gold 3mm diamond flat back labret stud showing post length and flat disc backing
3mm VS1 diamond flat back labret stud shown in 14k yellow gold, rose gold, and white gold from above
Flat back labret sizing guide showing 18G and 16G gauges from 5mm to 9.5mm with ear piercing map
14k white gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Diagram comparing threadless push-pin and threaded end styles for 14k gold diamond flat back labret stud
14k rose gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Close-up top-down view of 3mm VS1 diamond in 14k white gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k yellow gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k rose gold 3-prong push-pin end, showcasing facets
Home 3mm Lumina 3-Prong VS1 Diamond Flat Back Stud

3mm Lumina 3-Prong VS1 Diamond Flat Back Stud

$480 $822 Est. Retail Value
14k yellow gold 3mm diamond flat back stud with threadless push-pin shown separated from backing
14k yellow gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled view
Size comparison of 1.7mm to 3.0mm diamond flat back studs worn in four ear piercings on model
Four 14k yellow gold diamond flat back labret studs in graduated sizes displayed on warm stone surface
3mm VS1 diamond flat back stud shown in model's pierced nose, side profile demonstrating subtle fit
14k white gold 3-prong VS1 diamond labret end held between two fingers for size reference
Close-up of 3mm VS1 diamond in 3-prong white gold setting resting on fingertip, showing tiny scale
Side profile of 14k yellow gold 3mm diamond flat back labret stud showing post length and flat disc backing
3mm VS1 diamond flat back labret stud shown in 14k yellow gold, rose gold, and white gold from above
Flat back labret sizing guide showing 18G and 16G gauges from 5mm to 9.5mm with ear piercing map
14k white gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Diagram comparing threadless push-pin and threaded end styles for 14k gold diamond flat back labret stud
14k rose gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Close-up top-down view of 3mm VS1 diamond in 14k white gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k yellow gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k rose gold 3-prong push-pin end, showcasing facets
14k yellow gold 3mm diamond flat back stud with threadless push-pin shown separated from backing
14k yellow gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled view
Size comparison of 1.7mm to 3.0mm diamond flat back studs worn in four ear piercings on model
Four 14k yellow gold diamond flat back labret studs in graduated sizes displayed on warm stone surface
3mm VS1 diamond flat back stud shown in model's pierced nose, side profile demonstrating subtle fit
14k white gold 3-prong VS1 diamond labret end held between two fingers for size reference
Close-up of 3mm VS1 diamond in 3-prong white gold setting resting on fingertip, showing tiny scale
Side profile of 14k yellow gold 3mm diamond flat back labret stud showing post length and flat disc backing
3mm VS1 diamond flat back labret stud shown in 14k yellow gold, rose gold, and white gold from above
Flat back labret sizing guide showing 18G and 16G gauges from 5mm to 9.5mm with ear piercing map
14k white gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Diagram comparing threadless push-pin and threaded end styles for 14k gold diamond flat back labret stud
14k rose gold 3mm VS1 diamond flat back labret stud with 3-prong Lumina setting, angled front view
Close-up top-down view of 3mm VS1 diamond in 14k white gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k yellow gold 3-prong push-pin end, showcasing facets
Close-up top-down view of 3mm VS1 diamond in 14k rose gold 3-prong push-pin end, showcasing facets

Diamond Size

3mm
1.7mm 2mm 2.5mm 3mm
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

A truly striking stud! Crafted to enhance the diamond's radiance, the Lumina 3-Prong setting is designed to sit flush on your piercing, maximizing the sparkle of the faceted 3mm VS1 diamond while minimizing visible metal when worn. This piece is guaranteed to dazzle.

  • 3mm (.10ct.) conflict-free genuine diamond
  • Diamond Clarity: VS1 (ideal)
  • 3-Prongs minimizes visible metal
  • Solid 14k gold | Nickel-free | Hypoallergenic
  • Comfortable 3mm disc backing
  • 18G features a Threadless Push-pin
  • Choose Threaded or Threadless Push-pin for 16G
  • End Only option does not include a backing. Backing sold separately here.
  • Commonly worn as a cartilage earring: helix, conch, tragus, earlobes; lip ring: labret, Monroe, medusa, snake bites; as well as a nose ring.
  • Ethically handmade in the USA
Product Details
Materials
Shipping

Pairs Well With

Flat back earring insertion tool beside a gold CZ flat back stud, showing tool and jewelry separately Insertion tool being used in a helix piercing on a model, with gold CZ chain connector studs in lobe
Flat Back Earring Easy Insertion Tool $14
14k yellow gold Asscher-cut diamond flat back labret stud, angled studio shot showing disc backing 14k white gold Asscher-cut diamond push-pin end only, angled view highlighting step-cut facets
2.3mm Asscher-Cut Diamond Flat Back Stud $423
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 3mm pear-cut diamond flat back labret stud, angled view showing 3-prong teardrop setting 14k rose gold 3mm pear-cut diamond push-pin end only, angled view of prong setting and threadless pin stem
3mm Pear-Cut Diamond Flat Back Stud $262
3mm diamond 14k yellow gold flat back labret stud with high-set basket prong setting, angled view 14k yellow gold diamond flat back labret gauge and length comparison: 18G 5mm through 14G 9.5mm
3mm Diamond High-Set 14k Gold Flat Back Stud $589
14k yellow gold 3mm diamond flat back labret stud with low-set martini prong, angled product view 3mm diamond flat back labret stud shown in helix piercing on silicone ear display model
3mm Diamond Low-Set Prong 14k Gold Flat Back Stud $485
14K yellow gold 3mm illusion VS1 diamond flat back labret stud, angled view showing setting detail Close-up top-down view of 14K rose gold illusion setting highlighting VS1 diamond sparkle and prong detail
3mm Illusion VS1 Diamond Flat Back Stud $458

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 — $411

Est. Retail Value — $822

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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