Jewelry & Accessories Sizing Guide
A Note About Our Jewelry Collection
At HudsonFlowVintage, our jewelry collection is built around collectibles, costume jewelry, and vintage accessories — pieces chosen for their character, craftsmanship, history, and style. Our collection includes signed costume jewelry, novelty pins, event pins, kilt pins, cameos, brooches, and a wide variety of vintage finds from every decade.
Each piece is described honestly and individually, with materials and any markings noted in the product description. We never want you to assume a piece is something it is not — our descriptions tell you exactly what you are getting.
Our jewelry is sourced one piece at a time. When a piece is gone, it is gone — we may never find another like it.
Ring Sizing
How to Measure Your Ring Size
Method 1: Measure Your Finger
Wrap a slim strip of paper or a soft measuring tape around the base of the finger you intend to wear the ring on. Mark where the paper meets and measure the length in millimeters. This is your finger circumference. Divide by 3.14 to get your finger diameter, then use the chart below.
Tip: Measure at the end of the day when fingers are at their largest. If your knuckle is larger than the base of your finger, measure both and choose a size between the two.
Method 2: Measure a Ring You Already Own
Place a ring that fits you well on a flat surface. Using a ruler, measure straight across the inside of the band from one inner edge to the opposite inner edge in millimeters — this is the interior diameter. Compare it directly to the ring’s listed interior diameter in our product description.
If you don’t have a ruler handy, trace the inside of the ring onto paper, draw a straight line across the widest point of the circle, and measure that line.
Tip: Make sure you are measuring the inside of the band, not the outside. Even a small difference of 1–2mm can mean a full ring size.
Ring Size Conversion Chart
| Inside Diameter (mm) | US / Canada | UK / Australia | EU / France | Italy | Japan |
|---|---|---|---|---|---|
| 14.1mm | 3 | F | 44 | 4 | 4 |
| 14.9mm | 4 | H | 47 | 7 | 7 |
| 15.7mm | 5 | J½ | 49 | 9 | 9 |
| 16.5mm | 6 | L½ | 52 | 12 | 12 |
| 17.3mm | 7 | N½ | 54 | 14 | 14 |
| 18.2mm | 8 | P½ | 57 | 17 | 17 |
| 19.0mm | 9 | R½ | 60 | 20 | 20 |
| 19.8mm | 10 | T½ | 62 | 22 | 22 |
| 20.6mm | 11 | V½ | 65 | 25 | 25 |
| 21.4mm | 12 | X½ | 67 | 27 | 27 |
| 22.2mm | 13 | Z | 70 | 30 | 30 |
Note: Vintage rings were not always sized consistently. We measure the inside diameter of every ring and list it in the product description. Always compare the diameter to your own measurement rather than relying on any size stamp inside the band.
Bracelet & Bangle Sizing
How to Measure for a Bracelet
Wrap a soft measuring tape around your wrist just below the wrist bone. Add 0.5–1 inch for a comfortable fit, or up to 1.5 inches for a looser style.
How to Measure for a Bangle
Method 1: Measure Your Hand
Bring your four fingers together and measure across the widest part of your hand at the knuckles. This is the minimum diameter the bangle must pass over. Compare to the bangle’s listed interior diameter.
Method 2: Measure a Bangle You Already Own
Place a bangle you already own and wear comfortably on a flat surface. Measure straight across the inside opening from one inner edge to the opposite inner edge. This is the interior diameter. Compare it directly to the bangle’s listed interior diameter in our product description.
If your existing bangle fits but feels slightly snug passing over your knuckles, look for a listed diameter that is 2–3mm larger than your current bangle.
| Wrist Circumference | Bracelet Size | Bangle Interior Diameter |
|---|---|---|
| 5.5–6" | XS | 2.25–2.35" / 57–60mm |
| 6–6.5" | S | 2.35–2.5" / 60–63mm |
| 6.5–7" | M | 2.5–2.6" / 63–66mm |
| 7–7.5" | L | 2.6–2.75" / 66–70mm |
| 7.5–8" | XL | 2.75–2.9" / 70–74mm |
Note: Vintage bangles were often made in one standard size. If your hand measurement is larger than the bangle’s interior diameter, the bangle cannot be worn. We always list the interior diameter so you can check before purchasing.
Necklace Length Guide
| Length | Where It Falls | Common Style |
|---|---|---|
| 14–16" | Collarbone | Choker, collar |
| 17–18" | Base of neck | Princess length — most common |
| 19–20" | Just below collarbone | Matinee |
| 22–24" | Above bust | Opera length worn short |
| 28–36" | At bust or below | Opera length |
| 36"+ | Below bust | Rope length — can be doubled |
Note: Necklace length affects how a piece looks on different body types and necklines. A 16" necklace sits at the collarbone on an average frame but may sit higher on a fuller neck. We list the total chain length of every necklace in our product descriptions.
Brooch & Pin Sizing
Brooches and pins are sized by their overall dimensions — width and height — and by the length of the pin stem, which determines what fabrics they can be worn on safely.
- Pin stem length — a longer stem is needed for heavier fabrics like wool coats and tweed. A short stem is suitable for lightweight fabrics like silk and chiffon.
- Overall dimensions — listed as width × height in our product descriptions.
Our collection includes a wide variety of pins — from delicate enamel florals to bold rhinestone statement pieces, event and souvenir pins, kilt pins, and figural novelty pins. Each is described individually.
Earring Sizing
Earring dimensions are listed as width × height (drop length) in our product descriptions.
- Stud diameter — listed in millimeters for stud styles
- Drop length — measured from the base of the earring finding to the lowest point of the earring
- Clip or pierced — always noted in the description. Many vintage earrings are clip-on — we note whether clips can be converted.
Cameo Sizing
Cameos are listed by the dimensions of the cameo itself (width × height) and the overall piece dimensions including the setting. Material is always noted — shell, hardstone, glass, and resin cameos are all represented in vintage jewelry and vary in rarity and collectibility.
About Our Jewelry Materials
Our jewelry descriptions always note the materials and any markings found on the piece. Here is what our terminology means:
- Costume jewelry — fashion jewelry made from base metals, glass, rhinestones, lucite, or plastic; the heart of our collection and highly collectible
- Signed costume jewelry — costume pieces marked by their maker (e.g., Monet, Trifari, Weiss, Miriam Haskell, Lisner); collectible and often sought after by serious vintage jewelry enthusiasts
- Rhinestone — faceted glass or crystal stones; not diamonds
- Aurora borealis — iridescent coated rhinestones with a rainbow effect; popular in 1950s–1960s costume jewelry
- Silver tone / Gold tone — silver or gold-colored metal; not necessarily silver or gold
- Gold plated — a thin layer of gold-colored finish over base metal; may show wear
- Gold filled / Gold rolled — a more durable gold-colored finish bonded to base metal
- Marked metals — some pieces carry stamps such as 925 or 14K; we note these markings in the description and research them to the best of our ability, but we are not gemologists or appraisers
If a material cannot be confirmed, we say so honestly in the description. We do our research — including hallmark identification and maker history — but we recommend independent verification for any piece where material composition is important to your purchase decision.