Photograph clearly, compare the physical details and confirm the catalogue entry before adding a match to your inventory.
1. Make the shape easy to see
Put the piece on a plain, contrasting surface. Separate it from nearby pieces so the outline and connection points are visible. Use even light and avoid glare that hides printed details or makes a dark colour look different.
Take a sharp photograph close enough to show the important features. If a candidate looks almost right, photograph the underside or another angle rather than repeatedly submitting the same unclear view. Keep small accessories and minifigure components apart so one object does not hide another.
2. Compare more than the silhouette
Look at the stud layout, height, underside, clips, holes and attachment points. A similar-looking piece may differ in a way that affects whether it will fit the intended build. Printed and stickered elements also need closer inspection than a plain shape.
Compare a catalogue suggestion with the item in your hand. Do not confirm a match solely because the thumbnail is the same colour. If an important detail is hidden, keep the item in review until you can see it clearly. A lower-confidence record is more honest and easier to fix than a confident wrong one.
3. Use the design number as another clue
LEGO distinguishes design numbers from element numbers. Its identification guidance explains that a design number together with colour can help identify a piece, and that design or element numbers can be searched in its replacement-pieces service.
Look for a readable identifier on the physical part or in the relevant instructions. Treat it as evidence to compare with the shape. Catalogue systems do not always use exactly the same identifier: BrickLink documents differences between its item numbers and LEGO design IDs, particularly around variants and decorated parts.
4. Review colour and condition separately
Lighting, camera settings and surface wear can change how a colour appears. Compare the piece under neutral light with a known reference when a close colour match matters. A correct shape with the wrong colour is still the wrong inventory entry for a colour-specific build.
Condition is a separate judgement. Look for cracks, stress marks, wear, discolouration and damaged connections. A recognition result cannot replace a physical condition check, and identifying a printed design does not establish that the print is undamaged or that the piece is authentic.
5. Be especially careful with figures and partial builds
Check a minifigure as a combination of components: head print, torso front and back, legs, headgear and accessories. A familiar torso does not prove that the complete figure matches the catalogue. Keep mixed or uncertain combinations clearly described.
A partial model can suggest a possible set without proving completeness. Check the candidate against instructions, distinctive elements and figures, then count the inventory. Save what you have verified rather than treating a recognisable section as evidence that every part is present.
- Check the underside or alternate angle when needed.
- Confirm colour instead of relying on the photo alone.
- Review figures component by component.
- Count the actual quantity before saving.
6. Confirm first, then store
In Bricks & Giggles, review the suggested item, colour, quantity and condition before confirming it. Give the confirmed stock a location so the identification work leads to something you can retrieve. Leave uncertain items in the review workflow.
When a match is wrong, correct it while the physical item is still on the table. A few deliberate checks now are quicker than discovering the error during a sale or halfway through a build.
Sources & further reading
Check the provider’s current guidance when identifying or comparing catalogue items.