Size Chart

Millimeters to Inches:APPROXIMATE
6mm = 3/16 inch (just under 1/4 inch)
10mm = just over 3/8 inch
12mm = almost 1/2 inch
14mm = almost 9/16 inch (colored Octagon size)
16mm = 5/8 inch
18mm = 3/4 inch
20mm = 25/32 inch - (just over 3/4 inch) size of a NICKLE
see photo above

25mm = almost 1 inch (Hanging Prism sizes)
30mm = under 1 & 1/4 inch
40mm = just over 1 & 1/2 inch-Golf Ball Size
see photo above
50mm = just under 2 inches
60mm = 2 & 3/8 inches
70mm = 2 & 3/4 inches (size of the big 8550 ball)

150mm = six inches (wizard ball diameter)

Inches to Millimeters: APPROXIMATE
1/4 inch = just over 6mm
3/8 inch = almost 10mm
(faceted round bead)
1/2 inch = almost 13mm
5/8 inch = 16mm
3/4 inch = 19mm
(feng shui ball 8551/20mm or heart 8781/20)
7/8 inch = just over 22mm
1 inch = 25.4mm (approx sizes: #8815-star 28 mm #8781-Heart 28mm)
1 & 1/2 inch = 38 mm
(teardrops 8721/38mm, Icicle 8621/38 mm)
2 inch = 50mm
(teardrops 8721/50mm, moon 8816/50)
2 & 1/2 inch = 63 mm
(ren.crest 8902/63, teardrop 8741/63, Icicle 8611/63)
3 inch = 75mm
(wand 8269/75 to 81 mm)
4 inch = 102mm
(icicle 8611/100, spire 3011/100)
5 inch = 127mm
(teardrop 8721/125 see photo)
6 inch = 153mm
size chart inches to mm

Top Row with Dollar Bill

Just under 2 inches: 40 mm
Star 8815/40mm and Heart 8781/40mm
Moon 8816/50 mm

Bottom with ruler:

Bigger than a Quarter - 28 mm
(about an Inch and a Half)
Moon 8816/30mm, Heart 8781/28mm,
Star 8815/28mm

Swarovski crystal size chart

Sizes of Leaf # 8805 in comparison to Quarter:

26 mm red, peridot green and aurora

32 mm peridot green and aurora

45 mm clear

--> click for prices

Swarovski Crystal size chart Teardrop 8721 / 125 mm
Aobut the length of a Dollar Bill