What a 2 mm measurement tells you
A 2 mm band measurement alone does not establish whether an engagement ring suits your use. First confirm whether it means width or radial thickness, where it was taken and whether it describes the finished ring. The band's shape, stone setting and physical fit still need consideration.
Ask the maker for both dimensions at named points on your exact design and ring size. That gives you something useful to compare before you commit.
Width, thickness and setting height are different
The shank is the band that goes around your finger. Start by naming the direction of each measurement, rather than assuming two sellers use the same words.
Width
The breadth across the band at a chosen point. Imagine looking down at the plain band on your finger and measuring from one side edge to the other.
Radial thickness or depth
The distance from the inner surface against your finger to the outer surface, at that same point. A cut-through view makes this direction easier to see.
Setting height
The height of the stone-and-setting assembly is a separate dimension. Ask which two reference points the seller uses to measure it.
Stuller's manufacturing guide separates shank profile width and profile height. That does not make every seller's “profile height” label interchangeable. If a listing uses that phrase, request a marked image showing its endpoints.
Two bands can share a width and have different sections
Picture two rectangular band sections. Both are 2.0 mm wide, but one is 1.2 mm deep and the other is 1.8 mm deep. A width-only description would hide that difference.
2.0 × 1.2 mm
Width × radial depth
2.0 × 1.8 mm
Width × radial depth
These teaching dimensions are not tested designs, safe minimums or recommendations. They demonstrate missing information, not a strength ratio or a prediction of how a ring will wear.
Location adds another question. The bottom is the part beneath your finger. The shoulders are the portions approaching the center setting. A tapered band changes width along that path, so a shoulder measurement cannot stand in for a bottom measurement. Ask the maker to mark both and identify any narrower point between them.
One band, two locations
Suppose a hypothetical tapered design is listed as “2 mm at the shoulders.” Record that value at the shoulders only. Its bottom width and the radial depth at each location remain unknown until the maker supplies them.
A Driona listing leaving you unsure?
Send the product link, stone and metal options, ring size and the dimension you need clarified.
Ask about this ring's band dimensionsWhy forum measurements need context
A real discussion on r/EngagementRings shows how quickly a measurement question becomes a debate about personal experience.
Reddit · r/EngagementRings
Preferred band thickness and with
Discussion excerpts — paraphrased
View original Reddit postu/AlbertFernandez95 OP
The listing gives separate band-width and thickness values. The buyer asks whether to request larger dimensions for a marquise design.
u/lovers_andfriends · separate top-level comment
Reports years without damage to their own thin ring, while still suggesting the buyer consider larger dimensions.
Neither a prediction of damage nor one person's trouble-free experience establishes a universal threshold. Use the discussion to sharpen your questions, then seek evidence about the ring you are actually considering.
Compare the finished specification at the same points
Use this Band Dimension Comparison Map for each shortlisted ring. Copy the six fields into your notes. Leave an unanswered field marked “unknown” instead of borrowing a number from a similar-looking design.
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Identify the exact ring
Record the product link and stone/metal variant, your ring size and any custom revision number. Check that the measurements refer to this version.
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Locate the width
Record width at the bottom and shoulders, plus the narrowest relevant point. Ask for those locations to be marked on a drawing or image.
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Match the radial depth
Request inner-to-outer thickness at those same locations. A depth measured somewhere else leaves the comparison incomplete.
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Describe the construction
Note taper, outer cross-section and interior form. Is the band plain or stone-set? Ask how the section is formed where stones are set.
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Name the measurement stage
Is each number from a digital model, a nominal listing or an agreed finished specification? Record any tolerance the maker supplies, without inventing one.
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Resolve the remaining evidence
Note the fit or wear question still open, who can answer it and the next action: shortlist, ask or pause.
The map's useful result may be a blank: “2.0 mm width; radial depth unknown” is an incomplete section, not evidence that two rings are equivalent. The next step is a precise question rather than a verdict on either ring.
A plain outline does not describe every construction
Two bands with the same outside dimensions may have different shapes through the metal or different stone-setting layouts. GIA's ring-setting guide separates the stone-holding head, shoulders and shank, and explains several setting constructions. Ask about the actual design rather than treating a width-and-depth pair as a complete durability assessment.
Confirm what will be delivered
Model dimensions and finished measurements answer different questions. Stuller's production guidance accounts for polishing, which is a reason to ask about finished values. Its process allowances are not Driona specifications.
For a custom ring, carry the clarified dimensions into a versioned approval record. The custom-ring CAD review guide covers that separate approval step. A clear drawing still cannot inspect the workmanship of the finished piece.
A question you can send
“For this design in my chosen metal and ring size, please mark the band width and radial thickness at the bottom, shoulders and narrowest relevant point. Are these model, listed or agreed finished values? What remains to be confirmed for my intended wear?”
Check how the intended ring will fit
Dimensions on a page do not tell you exactly how the band will feel. GIA's sizing framework treats even-width, tapered, wide, bridal-set and other ring forms separately. Have the intended form assessed by a qualified jeweler instead of applying a universal size-up rule.
If you plan to wear a wedding band beside it, bring that pairing into the fit discussion. Use the wedding-band clearance guide for the separate question of how the rings sit together. If later alterations matter, check resizing limits before choosing the construction.
Two Driona band constructions to compare
These designs give you different questions to ask: a plain lower band with a shoulder transition, and a band with multiple rows of stones. They are construction examples, not a controlled strength or price comparison.
Round Three Stone Lab Grown Diamond Ring with Pear Accents
USD $1,104
Lab Grown Diamond / 14k Yellow Gold. Listed 1 ct round center with two 0.3 ct pear side stones. Complete-ring price before applicable checkout charges.
A useful example if you prefer a plain lower band with side stones near the center.
Ask: Where are width and radial depth measured as the band approaches the pear accents?
Choose a plain solitaire instead if you do not want side stones. This photo cannot establish finished dimensions for your size or suitability for your use.
View the three-stone ring
Round Solitaire Lab Grown Diamond Ring With Triple Pavé Band
USD $907
Lab Grown Diamond / 14k Yellow Gold. Listed 0.5 ct round center with 54 round accents. Complete-ring price before applicable checkout charges.
A useful example if multiple diamond-set rows are part of the look you want.
Ask: What is the finished section where the stones are set, and how does it change toward the bottom?
It is not a substitute for comparing plain bands if that is your preferred design. The photo cannot verify the underlying section.
View the triple-pavé ringPrices checked October 22, 2026. Confirm the selected options, ring size, current price and order terms on the product page. These examples do not establish ready-to-ship availability.
Before you order, resolve the blank fields
Shortlist
You can identify the exact version and compare the same dimensions at the same locations. Keep fit and finished-workmanship checks in the purchase process.
Ask for evidence
A label, location or finished value is unclear. Send the specific missing field to the maker rather than filling it from a forum recommendation.
Pause
You are being asked to commit while an important specification or order condition remains unresolved. Resolve it before paying or approving a custom revision.
If you request a dimension change, ask whether it makes the order custom and confirm the applicable terms first. Driona's refund policy excludes custom, engraved and personalized items from change-of-mind returns. Do not assume standard-item return terms will apply to a changed design.
Ask about the exact Driona design
Include the product link, selected stone and metal, ring size and the unclear dimension or location. Add how you expect to wear it and whether you plan a wedding-band stack, so your question has the right context.
Ask Driona about this ring's band dimensions
u/Prestigious-Wing9905 · top-level comment
Recommends larger dimensions and predicts problems with the narrower design.