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Monday, May 12, 2008
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Q. How many rhinestones will I need to cover my phone, iPod, Slide Rule, etc?

A. How am I supposed to know it all depends on what phone model you have, how much you want to cover, etc. I can tell you how many stones it will take to cover a certain area. Here is the method I would use, were I to cover a Cell Phone, Zippo lighter, iPod, etc.
Rhinestone Covered Nokia
A Rhinestone Covered Nokia - A Bling Ring Cell Phone kit

Okay time to get started - How big is you Cell Phone?
Length times Width will give you the area of a surface.
Example: if the phone was 2 by 4 Inches, then it would have 8 square inches of surface.

We have to know how many of what size rhinestone you need to cover 8 Square Inches.

Stone SizeDiameter MillimetersSquare MillimetersNumber Required to Cover
One Square Inch
5SS1.82.54 253
6SS2.03.14205
7SS2.23.80170
8SS2.34.15155
9SS2.65.31121
10SS2.86.16105
12SS3.07.0791
16SS4.012.5751
20SS4.717.3537
30SS6.432.1720
34SS7.139.5916
40SS8.658.0911
42SS9.165.0410
48SS11.095.037
1 Square Inch = 645.16 Square Millimeters
How To Calculate the Area of a Circle
1. Divide the diameter by 2 to find the radius.
2. Square the radius, that is, multiply it by itself. For example, the radius is 4 mm, then the square of that would be 4 x 4 which is 16mm.
3. Multiply the answer from step 2 (radius squared) by pi (3.1416). This is the area.

So if we use all of the numbers that we have pulled to together this is what we get
Stone SizeNumber Required to Cover
One Square Inch.
Number of InchesFinal Number
of Rhinestones Needed
5SS 25382,028
6SS20581,642
7SS 17081,357
8SS15581,242
9SS1218972
10SS1058838
12SS918730
16SS518411
20SS378297
30SS208160
34SS168130
40SS11889
42SS10879
48SS7854

I would suggest the 10SS rhinestones the smaller the rhinestone, the less likely it is to be ripped off when handled roughly. The larger the rhinestone, the more likely it is to be torn off leaving a very shiny silver spot where a rhinestone used to be. You will be much more happy with the look of 10ss stones as opposed to larger rhinestones. If you have a steady hand and good eyes, then go with a smaller rhinestone for an extraordinary look. Of course, if you use a smaller rhinestone, you will need more rhinestones.

If you choose to interleave your rows of rhinestones offset every other row for a very tight set, then you will need more rhinestones, up to 1/3 more.

Jerry Smith, Beads
Gemstone Beads -- Serving the Beading Community..Since 1999

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