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Load video: Rotating video of a colorless round cut lab-grown diamond showing its sparkle — Bow Tie Lab Diamonds
Load video: Video of the Round 4-Prong Lab-Grown Diamond Tennis Necklace in 14K white gold, showing sparkle and movement — Bow Tie Lab Diamonds
6.35mm (75.00 ctw) Round 4-Prong Lab-Grown Diamond Tennis Necklace in 14K yellow gold, front view — Bow Tie Lab Diamonds
6.35mm (75.00 ctw) Round 4-Prong Lab-Grown Diamond Tennis Necklace, worn on the neck — Bow Tie Lab Diamonds
Round 4-Prong Lab-Grown Diamond Tennis Necklace, clasp detail — Bow Tie Lab Diamonds
Round 4-Prong Lab-Grown Diamond Tennis Necklace, close-up of the diamonds — Bow Tie Lab Diamonds
6.35mm (75.00 ctw) Round 4-Prong Lab-Grown Diamond Tennis Necklace in 14K rose gold, front view — Bow Tie Lab Diamonds
6.35mm (75.00 ctw) Round 4-Prong Lab-Grown Diamond Tennis Necklace in 14K white gold, front view — Bow Tie Lab Diamonds

6.35mm (75.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

6.35mm (75.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

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Type: Necklace

Save 15%

✤ Holiday Edit pricing · 15% off through Jan 3

$28,398
$28,398 $33,410
The finished piece, comparedPrice reference

Round · 75.00 ct total · D-E · VVS-VS · 14K Yellow Gold

Bow Tie · Lab-grown $28,398 This piece, complete and ready to wear Bow Tie certified
Natural diamond Not sold by Bow Tie≈ $495,300 The same piece with natural diamonds · market estimateNot individually graded

Both prices are for the whole piece, not the diamond alone.

All diamonds+14K Yellow Gold setting+Craftsmanship

Lab-grown and natural diamonds are the same material: pure carbon, 10 on the Mohs scale, cut and graded the same way.

Bow Tie sells lab-grown diamonds only. Natural prices are estimates shown for reference and are not offered for sale.

The Holiday Edit · 15% off + lab-grown diamond studs, 1.50 ct each, on us · through Jan 3

  • Made to order in New York · ready in 5–7 business days
  • Free next-day insured shipping

Questions before you buy? Talk to Eric — text or call 646-496-7622

15-day returns on ready-made pieces.

Shipping calculated at checkout.
5.00 · From our Guest Book — 14 entries →
CUSTOMIZE THIS PIECE

*Pick Your Options & Size

Total Carat Weight (Length): 75.00 ctw (20 inch)
Metal: 14K Yellow Gold
  • Made to order in 10 business days, then free insured FedEx Next-Day. Estimated delivery: Nov 14 - Nov 18
  • Center Stone : VVS-VS , ✦Bow-Tie Certified
  • D-E (Under 1.00 ct)
  • Round Cut, Tennis, Excellent Cut & Polish
IGI Certified Diamonds · GIA on Request

Ethically made CVD lab-grown diamonds, IGI certified. GIA certification available on request for custom orders. More about lab diamonds here.

How Big Is 3 Carats, Really?

See it on your own hand before you decide. Plus at-home sizing for rings, chains, and bracelets.

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6.35mm (75.00 ctw) Round 4-Prong Lab-Grown Diamond Tennis Necklace in 14K yellow gold, front view — Bow Tie Lab Diamonds

6.35mm (75.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

$28,398
$28,398 $33,410

Approximate size · millimetres

Shapetypical ratio 2 ct 2.5 ct 3 ct 3.5 ct 4 ct 5 ct
RoundL:W 1.008.1 × 8.18.7 × 8.79.3 × 9.39.8 × 9.810.2 × 10.211.0 × 11.0
OvalL:W 1.4010.1 × 7.210.8 × 7.711.5 × 8.212.1 × 8.712.7 × 9.113.7 × 9.8
PearL:W 1.5010.7 × 7.111.5 × 7.712.2 × 8.112.8 × 8.613.4 × 8.914.5 × 9.6
MarquiseL:W 1.9512.8 × 6.613.8 × 7.114.7 × 7.515.5 × 7.916.2 × 8.317.4 × 8.9
EmeraldL:W 1.409.1 × 6.59.8 × 7.010.4 × 7.411.0 × 7.811.5 × 8.212.4 × 8.8
RadiantL:W 1.208.1 × 6.78.7 × 7.29.2 × 7.79.7 × 8.110.2 × 8.510.9 × 9.1
CushionL:W 1.057.4 × 7.18.0 × 7.68.5 × 8.19.0 × 8.59.4 × 8.910.1 × 9.6
PrincessL:W 1.006.9 × 6.97.5 × 7.57.9 × 7.98.4 × 8.48.7 × 8.79.4 × 9.4
AsscherL:W 1.007.2 × 7.27.7 × 7.78.2 × 8.28.6 × 8.69.0 × 9.09.7 × 9.7
HeartL:W 1.008.2 × 8.28.8 × 8.89.4 × 9.49.9 × 9.910.3 × 10.311.1 × 11.1

Approximate. Every fancy shape is cut a little differently, so two stones of the same carat weight can measure differently — the figures above assume the length-to-width ratios we cut to most often. The exact millimetres for your stone are on its IGI certificate.

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FROM OUR CUSTOMERS

5.00 ★ (15)
Verified

Insured, next day.

Every piece is made to order and ships fully insured by FedEx, with tracking the moment it leaves.

  1. 01Ready-made designs: made in 5–7 business days
  2. 02Free insured FedEx next-day delivery in the U.S.
  3. 0315-day returns on ready-made pieces, unworn
Shipping policy

Graded, on paper.

Center stones from 1 ct come with an IGI certificate. Smaller stones come with a Bow Tie certificate.

  1. 01IGI certificate on center stones from 1 ct
  2. 02Bow Tie certificate under 1 ct
  3. 03GIA on request, at extra cost
About certification

Made around you.

Share your idea and your budget. We find the stone, show you the CAD, and make it by hand.

  1. 01Share your idea and your budget
  2. 02Choose the stone, approve the CAD
  3. 03Made by hand in New York
Begin a custom piece

The right fit.

Not sure which size to get? The size guide covers rings, carat sizes and pendants.

  1. 01Ring and band size
  2. 02Lab-grown diamond carat size
  3. 03One resize or length adjustment, work included
Size guide