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 only CVD lab-grown diamonds graded D-E-F colorless with VVS-VS clarity (VVS1 or VVS2 wherever available, VS1 only when neither is). They have the same hardness, brilliance, and durability as mined diamonds.

Does my ring come with IGI certification?

Every lab grown diamond of 1 carat or more in your ring comes with its own IGI report, in any metal. Smaller diamonds meet the same VVS-VS clarity and D-E-F colorless standards but do not get an individual IGI report. Every gold ring also comes with an SGL jewelry certificate and every platinum ring with an ITPL jewelry certificate; 925 sterling silver rings do not come with a jewelry certificate. 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. It is 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. Website orders include one free resize within 6 months of purchase, where the design allows; you only cover the delivery to our workshop. 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. We make your piece in 10 days and deliver it in 10 to 15 days: free standard shipping takes about 15 days and express shipping up to 10 days, tracked and insured.

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.

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18K Yellow Gold

Open circle lab grown diamond pendant with oval and emerald cut stones in a backlit hexagonal jewelry box

Model wearing an open circle lab grown diamond pendant necklace with oval and emerald cut stones

Open circle lab grown diamond pendant necklace with oval and emerald cut stones hanging over a hand

Open circle lab grown diamond pendant necklace with alternating oval and emerald cut stones in a blue velvet box

Back view of an open circle lab grown diamond pendant on a yellow gold chain in a blue velvet box

Angled view of an open circle lab grown diamond pendant necklace resting in a blue velvet jewelry box

Loose lab grown diamonds in several shapes and a diamond ring on blue paper, beside IGI and SGL report cards

Globally certified lab grown diamonds graphic with an IGI report brochure beside a loose round diamond

Custom design service: pencil sketch of an oval three stone ring with measurements beside a loose pink gemstone

Express delivery shipping upgrade graphic with a gold three stone ring in a navy ring box beside a phone

18K Yellow Gold

SKU: RP05

Open Circle Lab Grown Diamond Necklace | Oval and Emerald Cut

Name: Open Circle Lab Grown Diamond Necklace | Oval and Emerald Cut
Brand: Ronora Diamond
SKU: RP05-10
Price: 1170.0 USD
Availability: InStock

$1,629.00 ~~$1,810.00~~

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Extra 10% off your first order with code
Extra 5% off orders over $3,000, added automatically
Free import duties on orders over $1,999

First order price with all offers:

Order by December 2 for Christmas delivery with express shipping, or by November 26 with standard shipping.

White Prong : Choose one No Yes

Chain Length:

Engraving: No No Yes

Font Type: Garamond

Preview:

Order Note (optional)

Order today, in your hands by

Know your setting

Width

16mm

Measured at the base of the piece

Approx. TCW

3 ct

The setting's average total carat weight

Metal

9k White Gold

37.5% Gold

62.5% Silver

The secret sauce that makes this piece.
*All white gold pieces are Rhodium plated

Accent gems

D-FColor

VVS-VSClarity

Side stones average color & clarity

We've Got You Covered

Free Insured Shipping

Free Lifetime Warranty

15-Day Returns and Exchanges

Free 6-Month Resizing

Product Details

This open circle lab grown diamond necklace forms a circle of alternating oval and emerald cut diamonds with no centre stone, set edge to edge with small shared prongs. Each stone has its own open back frame, and the circle hangs from a fine cable chain joined at two points, with a lobster clasp.

The diamonds are lab grown, D-E-F colorless, VVS-VS clarity and Excellent cut, about 3 TCW in total. Every stone is under 1 carat, so this pendant does not carry a single-stone certificate.

A circle has no beginning and no end, which makes this circle diamond pendant a meaningful anniversary, birthday or wedding day gift. It sits well on its own or layered with a tennis necklace. Contact us for your preferred chain length. Made to order in your metal and set by hand in Surat.

✦ NECKLACE DETAILS ✦
➼ Style: Open Circle Oval and Emerald Cut Pendant Necklace
➼ Setting: Shared prongs and open back frames in a closed circle, no centre stone
➼ Chain: Fine cable chain with a lobster clasp, fixed to the circle at two points
➼ Length: Made to your preferred length
➼ Metal Options: 9K, 14K, 18K Solid Gold (White / Yellow / Rose), 925 Sterling Silver, Platinum
➼ Gold Colors: White Gold, Yellow Gold, Rose Gold
➼ Custom Made: Yes

✦ LAB DIAMOND DETAILS ✦
➼ Shape: Oval and Emerald Cut (alternating)
➼ Cut: Excellent
➼ Clarity: VVS-VS
➼ Colour: D-E-F (Colorless)
➼ Total Carat Weight: 3 TCW approx
➼ Diamond Type: Real CVD Lab-Grown Diamond
➼ Certification: Not applicable (every diamond is under 1ct)

🛠 Metal Options
Available in 9K, 14K, 18K Solid Gold (White / Yellow / Rose), 925 Sterling Silver and Platinum. Never plated. Never hollow. Hallmarked and stamped.

🌱 Lab Grown Diamonds
Lab Grown Diamond (also known as Lab Created Diamond, CVD Diamond, Eco-Friendly Diamond, Ethical Diamond). Identical in every physical and optical property to mined diamonds. Conflict-free and responsibly created using advanced CVD (Chemical Vapor Deposition) technology.

🎁 Packaging
Every Ronora piece arrives in our signature presentation box, built to store your jewelry safely for years.

🚚 Production & Shipping
➼ Production: made in 10 days, delivered in 10 to 15 days; for an important date, contact us before ordering and we will do our best to prioritise it
➼ Standard: Free worldwide, about 15 days after dispatch
➼ Express: $35, up to 10 days after dispatch
➼ Fully insured with tracking
➼ Returns and exchanges: as set out in our Return & Exchange Policy

💍 Perfect For
Anniversary, Birthday, Wedding Day, Layering, Self-Purchase

Ronora - Made for the Moments

Financing & Payment Options

Secure checkout and flexible payment options are available at checkout.

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Size Guide

USA & Canada	UK, Australia & New Zealand (approx.)	Diameter in mm	Circumference in mm
3	F	14.1	44.2
3.25	F½	14.3	44.8
3.5	G	14.5	45.5
3.75	G½	14.7	46.1
4	H	14.9	46.8
4.25	H½	15.1	47.4
4.5	I	15.3	48.0
4.75	I½	15.5	48.7
5	J	15.7	49.3
5.25	J½	15.9	49.9
5.5	K	16.1	50.6
5.75	K½	16.3	51.2
6	L	16.5	51.9
6.25	M	16.7	52.5
6.5	M½	16.9	53.1
6.75	N	17.1	53.8
7	N½	17.3	54.4
7.25	O	17.5	55.0
7.5	O½	17.7	55.7
7.75	P	17.9	56.3
8	P½	18.1	57.0
8.25	Q	18.3	57.6
8.5	Q½	18.5	58.2
8.75	R	18.7	58.9
9	R½	18.9	59.5
9.25	S	19.1	60.2
9.5	S½	19.4	60.8
9.75	T	19.6	61.4
10	T½	19.8	62.1
10.25	U	20.0	62.7
10.5	U½	20.2	63.3
10.75	V	20.4	64.0
11	V½	20.6	64.6
11.25	W	20.8	65.3
11.5	W½	21.0	65.9
11.75	X	21.2	66.5
12	X½	21.4	67.2
12.25	Y	21.6	67.8
12.5	Y½	21.8	68.5
12.75	Z	22.0	69.1
13	Z½	22.2	69.7
13.25	Z1	22.4	70.4
13.5	Z1½	22.6	71.0
13.75	Z2	22.8	71.6
14	Z2½	23.0	72.3
14.25	Z3	23.2	72.9
14.5	Z3½	23.4	73.6

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 Insured Shipping

Every order ships free and fully insured, with a signature on delivery, so your piece arrives safely.

Free Lifetime Warranty

We stand behind the quality of our designs with a lifetime warranty on manufacturing defects. If a fault comes from how the piece was made, we repair or replace it free.

15-Day Returns and Exchanges

Unworn pieces in their original packaging, rings included, can be returned or exchanged within 15 days of delivery.

Free 6-Month Resizing

Website orders include one free resize within 6 months of purchase, where the design allows, so the fit is perfect. You only cover delivery to our workshop.