How we scale jewellery.
A centimetre makes a difference. We bring product dimensions into your photo, using a reference suited to each piece.
From pixels to drop length.
Earring placement on a photo
The sample flow uses eye and earlobe landmarks to place an earring on the photo. Photo angle and framing can affect the result.
Sample photo
Necklaces & Chains
Sternal Notch Anchor & Catenary Drape Calibration
Chain length dictates physical resting curvature. Using the sternal notch landmark and clavicle width, Darpan calculates true catenary curves across standardized drape lengths.
40.0 cm Collar Drape
Hollow of throat; clears high necklines
Photogrammetric Calibration: Scaled strictly to biological bodily landmarks (11.7 mm iris for face, 60 mm wrist width, standard phalanx diameter) with zero arbitrary stretching.
Closed-Loop Precision: Validated against manufacturer specifications within strict ±10% physical tolerance limits.
Real-World Confidence: Try before buying to eliminate size returns, silhouette mismatch, and drape uncertainty.
Watches & Timepieces
60 mm Anatomical Wrist Width Anchor
Just as earrings anchor to the 11.7 mm iris, timepiece cases scale against the universal 60 mm average adult wrist width (styloid-to-styloid process) ensuring authentic lug-to-lug proportions.
⌀ 36.0 mm Petite Case
Ideal for slender wrists (14–16 cm)
Photogrammetric Calibration: Scaled strictly to biological bodily landmarks (11.7 mm iris for face, 60 mm wrist width, standard phalanx diameter) with zero arbitrary stretching.
Closed-Loop Precision: Validated against manufacturer specifications within strict ±10% physical tolerance limits.
Real-World Confidence: Try before buying to eliminate size returns, silhouette mismatch, and drape uncertainty.
Rings & Bracelets
Standard US Ring Gauge & 64 mm Bangle Contour
Finger ring fittings utilize standard ISO/US inner diameters calibrated to the proximal phalanx, while cuff bracelets scale to an anatomical 64 mm elliptical wrist curvature.
⌀ 15.7 mm Inner ⌀
49.3 mm inner circumference
Photogrammetric Calibration: Scaled strictly to biological bodily landmarks (11.7 mm iris for face, 60 mm wrist width, standard phalanx diameter) with zero arbitrary stretching.
Closed-Loop Precision: Validated against manufacturer specifications within strict ±10% physical tolerance limits.
Real-World Confidence: Try before buying to eliminate size returns, silhouette mismatch, and drape uncertainty.
Try-on is a visual guide. Use the product’s published dimensions and your retailer’s fit advice before buying.