Is a CVD diamond a real diamond?

Yes. A CVD (Chemical Vapor Deposition) diamond is a real diamond in every scientific and gemological sense. It is chemically, physically, and optically identical to a mined diamond. The only difference is origin — CVD diamonds grow in a controlled laboratory environment rather than underground.

Are lab grown diamonds as good as real diamonds?

Yes. Lab-grown diamonds are real diamonds, graded by the same international standards as mined stones. Ronora uses VVS clarity, D-E-F colorless CVD lab-grown diamonds exclusively — the top tier of both grading scales. They have the same hardness, brilliance, and durability as mined diamonds.

Does my ring come with IGI certification?

IGI certification is included for rings with a center stone of 1.0 carat or above. Rings with smaller center stones meet the same VVS clarity and D-E-F colorless standards but do not include individual stone certificates. All diamonds are independently selected to these specifications.

Can you shower with a lab-grown diamond ring?

It is safe but not recommended as a daily habit. Soap, shampoo, and conditioner leave a film on the diamond that dulls its sparkle over time. If you shower with your ring regularly, clean it weekly with warm water and mild dish soap to maintain full brilliance.

Can lab grown diamonds be worn every day?

Yes. Diamond scores 10 on the Mohs hardness scale — the hardest natural substance — and is designed for everyday wear. Lab-grown diamonds are physically identical to mined diamonds and will not scratch or lose brilliance with daily use.

Can I get my ring resized after purchase?

Yes. Ronora offers complimentary resizing within the first year of purchase. Contact us via WhatsApp or our contact page to arrange resizing for your ring.

How long does production and shipping take?

All Ronora rings are made to order. Production typically takes 10 to 14 business days. Shipping to the USA, UK, Australia, and Canada takes an additional 5 to 10 business days via tracked and insured courier.

Do you ship to the USA, UK, and Australia?

Yes. Ronora Diamond ships to the USA, UK, Australia, Canada, and internationally. All orders are sent via tracked and insured courier. Production is based in Surat, India — the world's diamond crafting capital.

Marquise Lab Grown Diamond Solitaire Ring

Name: Marquise Lab Grown Diamond Solitaire Ring | IGI
Brand: Ronora Diamond
SKU: R93
Price: 870.0 USD
Availability: InStock

30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders! 30-Day Hassle-Free Returns | Ethically Lab-Grown Diamonds Get 10% Off with Code WELCOME10 | Ends Soon! Shop Now Gift-Ready Luxury Packaging | Free Shipping on All Orders!

Size Guide

Diameter in mm	Circumference in mm	Australia & New Zealand	USA & Canada
14.1	44.2	F	3
14.5	45.5	G	3 1/2
14.9	46.7	H	4
15.3	48.0	I	4 1/2
15.5	48.7	J	4 3/4
15.9	49.9	K	5 1/4
16.3	51.2	L	5 3/4
16.7	52.5	M	6 1/4
17.5	55.0	O	7 1/4
17.9	56.3	P	7 3/4
18.3	57.6	Q	8 1/4
18.7	58.9	R	8 3/4
19.2	60.1	S	9 1/4
19.6	61.4	T	9 3/4
20.0	62.7	U	10 1/4
20.4	64.0	V	10 3/4
20.8	65.2	W	11 1/4
21.2	66.5	X	11 3/4
21.8	68.4	Z	12 1/2
22.4	70.3	Z1	13 1/4
22.8	71.6	Z2	13 3/4
23.0	72.3	Z3	14
23.4	73.5	Z4	14 1/2

Find my ring size

Method 1: using a ring diameter.

Pick a ring that fits the finger you want.
Measure the inside diameter of the ring in mm.
Use our size chart to find your size.

Method 2: using your finger circumference.

Cut a piece of string.
Wrap it around your finger where the ring will sit.
Mark where the ends meet.
Measure the string length in mm.
Use the size chart to find your size.

Expert tips

Measure twice and contact Ronora if you are unsure.

We've Got You Covered

Free Shipping & Returns

We always cover returns and exchanges so you can get the piece you'll love forever.

Free Lifetime Warranty

We stand behind the quality of our designs and offer a lifetime warranty on all products.

Lifetime Diamond Upgrade

When you're ready for something new, we offer credit toward a diamond upgrade.

Free 1-Year Resizing

We offer complimentary resizing because we want your fit to be perfect.

By choosing our lab grown diamonds, together we can save:

250 tons of earth

removed to mine a carat of diamond

120 gallons of water

removed to mine a carat of diamond

143 lbs of carbon dioxide

emitted to extract a carat of diamond

Marquise Lab Grown Diamond Solitaire Ring | IGI

Know your setting

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