designer solitaire engagement ring with lab grown or natural diamonds by Formes

Duo+ creative engagement ring with Gintare Sudziute by Formes

DUO+ ENGAGEMENT RING, 0,30 - 0,70 CT

€2.190,00

FORMÉS DUO+ playful and aesthetic engagement ring is incrusted with 0,30 - 0,70 ct lab made diamonds and decorated with 10 side diamonds. The ring is handcrafted in fairmined 14K white, rose or 18K yellow gold. Ring is made by hand with the best quality and craftsmanship.

Reinvented timeless solitaire style ring with unique side diamonds decoration
Set with premium laboratory made diamonds
Central diamond is 0,30, 0,50 or 0,70 ct, FG color, VVS-VS clarity, excellent cut, none, with international IGI certificate
Side diamonds: 10 pcs ~0,20 ct FG VS, perfect cut lab grown diamonds
Ring weights ~2 - 3 g, the shank is 2 mm width, with the diamond crown total ~5 mm - 7 mm
In the picture you can see the ring with 0,50 ct central diamond

The ring is made to order - returns or exchanges are not accepted for the items made to order. When ordering this piece, production begins within one day and delivery takes roughly 14 business days.

Creator's note:

I carried over the clean, modern spirit of the four-prong design and introduced a playful twist along the band—side lab-grown diamonds crowned in a pattern that appears to dance unexpectedly between each setting. Their shifting arrangement creates a feeling of dynamic movement, adding a dash of spontaneity to the ring’s refined silhouette. It’s a piece that marries sleek simplicity with a touch of whimsy, a fusion of understated elegance and creative spark—perfect for those drawn to jewelry that feels both responsible and delightfully unexpected.

Duo+ creative engagement ring with lab grown diamonds on Gintare Sudziute by Formes

Diamond Quality Guide

Your FORMÉS Diamond Guide

Let’s find the diamond that feels right—for your values, your story, and your light.

1. Natural or Lab Grown? Two Beautiful Journeys

	Natural Diamonds	Lab Grown Diamonds
How it’s made	Earth-formed over 1–3 billion years	Created in labs in 4–10 weeks
Eco impact	~108–160 kg CO₂ per carat	From as low as 0.03 to 500+ kg CO₂ depending on energy source
Why people choose	Rarity, long-term value, timeless origin	Ethical, sustainable, modern tech story, more size for your budget
Certification	GIA, HRD, IGI, SCS 007 (sustainability)	GIA-LGDR, IGI, HRD, SCS 007

At Formés, we request full energy-source info for every diamond we offer—transparency first.

2. The 4 C’s of Diamond Quality — Always the Standard

Both natural and lab grown diamonds are graded by the 4 Cs: Cut, Color, Clarity, and Carat. Here's what really matters:

Cut = how it sparkles
→ We only use Excellent or Very Good. It’s the most important C, as it is not nature's given characteristic, but a polisher's expertise and craftsmanship.
Color = how white it looks
→ We love the D–G range for its crisp, bright white look. While D–E diamonds are often chosen for investment, F–G diamonds offer the best balance of beauty and value—yellow tones are virtually invisible unless directly compared to D–E, so there’s no need to worry. When the design calls for it, warmer tones can be stunning too—these are often referred to as champagne, cognac, or even brown diamonds, and they bring character and a distinctive richness to the piece.
Clarity = how clean it looks
→ We pick eye-clean diamonds. IF–VVS stand for no or almost no inclusions and are mostly chosen for investment; VS and SI1 are optimized for everyday wear. If you can’t see inclusions, they won’t matter.
Carat = size and weight
→ Bigger isn’t always better. Let’s find your perfect proportion.

3. Choosing Your Diamond, Made Simple

Your Style	Natural Diamond Tips	Lab Grown Diamond Tips
Heirloom / Investment	D–E color, IF–VVS clarity, Excellent cut, GIA or HRD cert	D–F color, VS+ clarity, Excellent cut, GIA or IGI cert
Daily Wear / Modern Piece	F–G color, VS2–SI1 clarity, Excellent/Very Good cut	Choose what shines brightest to your eye—cut is key, clarity and color shifts cost less

💡 Fun fact: With lab grown, a clarity upgrade (e.g. VS to VVS) may only cost 5% more. In naturals, that could be 20% or more!

4. Diamond Certification — What to Look For

Lab	For	What it tells you
GIA	Natural & Lab Grown	Top-tier grading, laser-inscribed ID
IGI	Natural & Lab Grown	Widely used in lab diamond world
HRD	Natural & Lab Grown	Trusted in Europe, great on origin checks
SCS 007	Both + Recycled	Sustainability scoring, ethics guarantee

Every Formés stone comes with a trusted certificate and laser-inscribed ID.

5. Our Promise at Formés

💎 Single-origin only — One clear journey from source to setting
✨ Laser-inscribed — Every diamond is traceable by code
🌿 Recycled gold — All our 14K & 18K gold is responsibly sourced
📜 QR code in your box — See your diamond’s full story

Luxury is knowing your diamond’s past and future.

6. Fast FAQs

Will a lab-grown diamond keep its value?
Buy for love, not resale. Tech evolves fast—brilliance, responsibility and ethics are the real return.

Are natural diamonds always ethical?
Only when documented. We rely on trusted sources like GIA, SCS 007, and the Kimberley Process.

What matters more—cut or carat?
Always cut. A well-cut diamond will sparkle more than a larger one with poor cut.

At Formés, we don’t just set diamonds—we translate your light.
Choose natural or lab grown. Choose with heart. We’ll take care of the rest.

Gold Carat Guide

Not sure which gold karat is right for you? Use the FORMÉS Gold Karat Cheat Sheet.

14 K Gold – Everyday Hero

58.5 % pure gold + 41.5 % strengthening alloys
Light, modern hue (think champagne)
Tougher surface: resists most scratches and dents
Wallet-friendly and skin-friendly (nickel-free in our alloys)
Best for: wedding bands, stackers, “never-take-it-off” pieces

18 K Gold – Heirloom Classic

75 % pure gold + 25 % lighter alloys
Rich, saturated color (think late-sunset glow)
Slightly softer; treat like a dress watch, not a tool watch
Higher intrinsic value—and a bit more prestige
Best for: milestone rings, statement pieces, future heirlooms

Quick Pick

Wear it daily? Choose 14 K.
Mark a big moment? Choose 18 K.

Whichever karat fits your rhythm, every FORMÉS piece is crafted from recycled gold and finished to the same exacting standards—sharp, balanced, intentional.

Gold Purity of 14 K 18 K and 24 K visualized

Example: How the Yellow Color Varies by Gold Karat

Ring Size Guide

RING SIZE CONVERSION CHART BY FORMÉS

FORMES Ring Size Guide

Finding your ring size should feel as effortless as slipping on your favorite piece. Whether you're choosing a gift or treating yourself, here's how to get the perfect fit at home.

Two Simple Ways to Find Your Ring Size

1. Measure Your Finger

Take a soft ribbon, string, or strip of paper and wrap it gently around your finger. Make sure it slides comfortably over your knuckle.
Mark where it overlaps and measure the length in millimeters.
That number is your finger’s circumference. For example, 54 mm means size EU 54.

Tip: If you're between sizes, go one size up. If you’re choosing a slim ring, you can opt for a slightly smaller size.

2. Measure a Ring You Already Own

Pick a ring that fits the intended finger.
Lay it flat and measure the inside diameter in millimeters across the widest point.
Match this diameter to our size chart.

Sample of size 15, or 15 mm inner diameter

Helpful Sizing Tips

Fingers on your dominant hand are usually a bit bigger.
Warm weather = slightly larger fingers; cold = slightly smaller.
Wide bands (6mm+) feel tighter—go half a size up.
Slim stacking rings? Choose a snug fit.

how to measure a ring size by Formes Fine Jewelry

Ring Size Conversion Chart

Diameter (mm)	Circumference (mm)	EU Size	US Size	UK Size	Japan Size
14.0	44	44	3	E	4
14.4	45	45	3¼	F	5½
14.7	46	46	3¾	G	6
15.0	47	47	4	H	7
15.3	48	48	4½	I	8
15.6	49	49	5	I½	9
15.9	50	50	5¼	J	10
16.2	51	51	5¾	K	11
16.5	52	52	6	L	12
16.9	53	53	6¼	M	13
17.3	54	54	7	N	14
17.5	55	55	7¼	N½	15
17.8	56	56	7½	O	16
18.2	57	57	8	P	16½
18.6	58	58	8½	Q	17
18.8	59	59	8¾	R	18
19.1	60	60	9	R½	18½
19.4	61	61	9½	S	19
19.8	62	62	10	T	20
20.2	63	63	10¼	U	21
20.6	64	64	10¾	V	22
20.8	65	65	11	V½	23
21.0	66	66	11½	W	24
21.3	67	67	12	X	25
21.8	68	68	12½	X½	26
22.1	69	69	12¾	Z	27
22.3	70	70	13	Z+1	28
22.6	71	71	13½	Z+2	29

What About Ring Style?

Statement rings: If bold and wide, go half a size up.
Stacking rings: Measure the exact finger and go for a snug fit.
Knuckle/midi rings: These often run small—check specific design notes.
Engagement and wedding bands: Precision matters. Measure carefully or contact us for help.
Open rings: These are slightly adjustable but still follow our sizing guide.

Still Unsure? Let Us Help. Just message us—we're happy to guide you personally. And remember, FORMES rings can be resized or exchanged within 30 days for your peace of mind.

Import Duties, VAT & Insurance

Import duties, VAT & insurance are always included in your order value. You will not have to worry about anything after the order is placed - we will handle it all for you. If any additional taxes and/ or shipping fees apply they will be calculated and added in checkout. So we assure that you will not incur any additional charges once you've paid for your order.

Complimentary Shipping & Returns

Free shipping worldwide.

Same day delivery in Vilnius, Lithuania. For other destinations - for ready to ship items please allow us up to 1-3 business days for your order to be processed, shipped and delivered. For the pre - order items additional 14 business days are required to implement the order.

Returns and / or exchanges are accepted within 90 days of delivery, only for ready to ship items. For the return or exchange of pre - order goods contact us individually, if we find the request reasonable, we might accept the return or agree to change.

Free return shipping is offered to customers located in the EU. If you choose to return a Non-EU (European Union) order, you are responsible for covering the cost of return shipments.

For more information click here.

About Us

FORMÉS is an independent fine jewelry house rooted in a family legacy of over 30 years. We bring heritage and innovation together, crafting sculptural pieces in recycled gold with certified, ethically sourced diamonds. Guided by founder Viktorija Kančinian and her close team of artisans, FORMÉS redefines fine jewelry with quiet disruption—responsible, refined, and timelessly modern.

Certified & Beautifully Wrapped

Every order arrives beautifully packaged in our signature box and bag, complete with certificates for lasting assurance.