

Certified & Beautifully Wrapped
Every order arrives beautifully packaged in our signature box and bag, complete with certificates for lasting assurance.
✓ All taxes & duties included
✓ 30-day free returns for ready to ship items
✓ Complimentary insured shipping (DHL / UPS)
✓ Certificate of authenticity & signature gift packaging added
✓ Rated Excellent by clients on Trustpilot ★★★★★
A soft presence with a sharp silhouette.
The petite MAMA ring is a slimmer, more architectural—and more characterful—take on our signature piece. Already embraced by stylish mothers in Copenhagen, Stockholm, Berlin, London, Vilnius, and beyond, it has been featured alongside international designer art jewelry—an understated icon for those who value beauty with meaning.
Light in scale but rich in intention, it’s made to stack and wear with ease—celebrating the beauty, heroism, and quiet memories of becoming, every day and forever.
Technical details
– Handcrafted from recycled 14K rose gold
– Set with a single ~1.75 mm lab grown diamond (~0.02 ct, F–G / VVS–VS, very good to excellent cut)
– Band width: 2.5 mm; height: 2 mm
– Approx. weight: ~3 g (depending on size)
The ring is ready to ship, you will get it very soon, same day delivery in Vilnius. The jewel will reach you together with our premium quality certificate and exclusive packaging. Find out more about the delivery here.
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.
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.
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
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
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.
Let’s find the diamond that feels right—for your values, your story, and your light.
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.
Both natural and lab grown diamonds are graded by the 4 Cs: Cut, Color, Clarity, and Carat. Here's what really matters:
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!
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.
Luxury is knowing your diamond’s past and future.
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.
Every order arrives beautifully packaged in our signature box and bag, complete with certificates for lasting assurance.
A second-generation jeweller with over 15 years of mastery, Viktorija brings an intuitive artistry and exacting precision to every bespoke FORMÉS creation.