What are lab-grown diamonds?

Lab-grown diamonds are real diamonds with the same physical, chemical, and optical properties as mined diamonds. They are created in controlled laboratory environments using advanced technology that replicates the natural diamond-growing process.

Are lab-grown diamonds real diamonds?

Yes, lab-grown diamonds are 100% real diamonds. They have the same chemical composition (pure carbon), crystal structure, and optical properties as mined diamonds. They are graded by the same gemological laboratories including IGI and GIA.

How much can I save with lab-grown diamonds?

Lab-grown diamonds offer 40-60% more value compared to traditional mined diamonds of equivalent quality, allowing you to get a larger or higher quality diamond for your budget.

Are lab-grown diamonds ethically sourced?

Yes, lab-grown diamonds are 100% conflict-free with minimal environmental impact. They require no mining, resulting in significantly less land disruption, water usage, and carbon emissions.

What is Peaceful Diamonds' guarantee?

Every purchase from Peaceful Diamonds includes a certificate of authenticity, free shipping, 30-day returns, and a lifetime warranty.

3.68 CT Marquise Lab Grown Diamond Engagement Ring in 18K Yellow Gold

Lab Grown Marquise Diamond Hidden Halo Engagement Ring – 3.68 CT | 18K Yellow Gold

$4,800.00

4 interest-free payments of $1,200.00 with Shop Pay

This stunning 3.68 CT Marquise Lab Grown Diamond Hidden Halo Engagement Ring features a 3.13 CT center stone set in 18K Yellow Gold. IGI 736507198. E-F color, VVS2 clarity.

Free insured shipping on all orders
All orders ship immediately

Ring Size

Ring Size Guide

Find your perfect ring size using the conversion chart below. If you're between sizes, we recommend sizing up.

US Size	EU Size	UK Size	Diameter (mm)	Circumference (mm)
4	46.8	H	14.9	46.8
4.5	47.8	I	15.3	47.8
5	49.0	J ½	15.7	49.0
5.5	50.3	K ½	16.1	50.3
6	51.5	L ½	16.5	51.5
6.5	52.8	M ½	16.9	52.8
7	54.0	N ½	17.3	54.0
7.5	55.3	O ½	17.7	55.3
8	56.6	P ½	18.1	56.6
8.5	57.8	Q ½	18.5	57.8
9	59.1	R ½	18.9	59.1
9.5	60.3	S ½	19.4	60.3
10	61.6	T ½	19.8	61.6

How to Measure

String method: Wrap a thin string around your finger, mark where it overlaps, and measure the length in mm. Match it to the circumference column.
Existing ring: Place a ring that fits well on a ruler and measure the inside diameter in mm.
Measure at the right time: Fingers are smallest in the morning and when cold. Measure at the end of the day for the best fit.

All Peaceful Diamonds rings include free resizing within 30 days of purchase.

Free Shipping

30-Day Returns

IGI Certified

Lifetime Warranty

Certified Lab-Grown Diamonds

Made in USA

Ships globally

Lifetime warranty

Total Carat Weight 3.68 carats

Center Stone 3.68 carats Marquise

Diamond Shape Marquise

Color Grade E-F

Clarity Grade VVS2

Diamond Origin Lab Grown / Lab Created

Metal Type 18K Yellow Gold

Setting Style Halo

Ring Style Engagement Ring

Why Choose Lab-Grown Diamonds?

Lab grown diamonds are real diamonds with the same physical, chemical, and optical properties as mined diamonds. They offer better value (40-60% less), are ethically sourced, and environmentally friendly.