That's a very frequently asked questions by customers. The reason we would like to find out how many rhinestones we need in a project is we do not want to buy too many extra rhinestones (this will increase cost).
For iPhone 5, the measurements is:
58.6mm X 123.8mm
2.31" X 4.87"
Before we calculate how many rhinestones we need to cover the iPhone 5, we will need to decide which size of rhinestones we will choose for this project.
What size of Rhinestones to use when covering a phone case?
Basically, it's recommended to use ss10 or ss12 for covering up an iPhone case,
If you choose to cover your phone in all one color, then choose 12SS stones, the application will go fast. But, if you're planning to do some pattern on the case, I'd suggest to go for smaller size ss10, this will give a better detail of the pattern.
Below shows a chart indicating the number of rhinestones they are needed to cover a sq.inch.
Number Needed to Cover
A One (1) inch Strip
Number Needed to Cover
One (1) Square Inch
|ss8||(25.4 / 2.4) = 10.6||10.6 * 10.6 = 112|
|ss10||(25.4 / 2.8) = 9||9 * 9 = 81|
|ss12||(25.4 / 3.1) = 8.1||(8.1* 8.1) = 66|
As a result, to cover a iPhone with ss12 stones, we need:
= Area of iPhone in sq inch * # of rhinestones needed to cover 1 sq inch
= (4.87 * 2.31 ) * 66
= 742 pieces
However, in this calculation, we assumed that the rhinestones are tidily applied one by one, in a very orderly manner shown below.
There will be quite a lot of spaces in between the rhinestones. This is something we dont like to see when sticking the rhinestones. We intend to interleave the rows of rhinestones offset every other row for a very tight setting. So, we should be purchasing around 1/4 more than the calculations we got above.
Also, there is one more thing you should consider, are you going to stick the rhinestones on the edge as well? if yes, then you will also need to calculate the no of rhinestones needed for the edge.
To make things easier for you, we have come up with the ANSWER which you want to know (without you doing the calculation on your own).
No. of rhinestones needed to cover iPhone 5 (back) using ss10 rhinestones: 950 pcs approx
No. of rhinestones needed to cover iPhone 5 (back+edge) using ss10 rhinestones: 1300 pcs approx