Useful Tools Bead CalculatorGemstone Weight EstimatorRing Size Tool Gemstone Weight Estimator Estimate carat weight using realistic gemstone profiles with shape, cut, depth profile and calibrated presets. Gemstone Type: Shape: Round Oval Cushion Emerald Cut Pear Baguette Cut Type: Faceted Cabochon Depth profile: Length (mm): Width (mm): Depth (mm): Estimate Weight Copy result Results are approximate. Tolerance ±5–10% is normal. Ring Size Converter Enter the inside diameter or inside circumference (in mm), then convert to international sizes. Fit adjustments help match real-world comfort. Value (mm): Measurement type: Diameter Circumference Convert Fit Adjustments Finger condition: Normal Cold (fingers smaller) Warm / Hot (fingers larger) Swollen (sport / salt, etc.) Ring band width (mm): Time of day: Afternoon (neutral) Morning (smaller) Evening (larger) International Size Chart EU/CH roughly equals inside circumference in mm (rounded). EUCHUSUKJP/CN/INDiameter (mm)Circumference (mm) 48 48 4.5 I½ 8 15.3 48.1 49 49 5 J½ 9 15.7 49.3 51 51 5.5 K½ 11 16.1 50.6 52 52 6 L 12 16.5 51.8 54 54 6.75 N 14 17.2 54.0 56 56 7.5 O 16 17.8 55.9 58 58 8.25 Q 18 18.5 58.1 60 60 9 R 20 19.0 59.7 62 62 10 T 22 19.8 62.2 Back to Products House style: pro catalogue on white Language English Français Deutsch Preset Apply preset Reset Category Diamond Coloured gemstone Pearl Jewellery type Ring Pendant Earrings Bracelet Necklace Brooch Metal 18k gold 14k gold Platinum Sterling silver Gold colour Yellow White Rose Champagne Two-tone Finish High polish Satin Brushed Matte Hammered Central stone Diamond Sapphire Ruby Emerald Spinel Tourmaline Aquamarine Morganite Amethyst Citrine Peridot Opal Pearl None Central stone shape Round Oval Pear Cushion Emerald cut Princess cut Marquise Heart Asscher Trillion Central stone colour Central stone size Cut Brilliant cut Step cut Mixed cut Cabochon Rose cut Setting style Solitaire prong Bezel Halo Double halo Three-stone Toi et Moi Cluster Tension Cathedral Invisible Channel Pavé Band / shank style Prongs / details Side stones Include Side stone type Diamond Sapphire Ruby Emerald Spinel Side stone colour Side stone size Side stone quantity Design style Minimal modern Classic timeless Vintage inspired Art Deco Organic / nature-inspired Bold sculptural Bridal elegance Contemporary luxury Engraving / details Angle 3/4 view Front view Side profile Top-down Pair symmetry (earrings) Negative prompts (avoid) Generate prompt Copy Generated prompt
