I have also made a more symmetrical version of the ripple that is really what I was after the first time! 
Pattern for that is now on sale at Ravelry. https://www.ravelry.com/patterns/library/smooth-granny-ripple
And even another which I call a Slow Granny Ripple 
Pattern for that is now on sale at Ravelry. https://www.ravelry.com/patterns/library/slow-granny-ripple
The pattern details for the Original Granny Ripple and details on how to square off the ends and prepare for an edging is also for sale on Ravelry – http://www.ravelry.com/patterns/library/soft-granny-ripple.
Or you can get all three in an ebook – https://www.ravelry.com/patterns/sources/three-granny-ripples/patterns
I have also given fairly detailed notes of how I made the Spectrum version for anyone who might like to copy it. (See link below)
Notes for making a Spectrum Granny Ripple blanket
More views of the blanket. Edging not included in pattern.
Rainbow Junkie 
This makes an elegant modification of the old timey Granny Ripple. Thanks!!
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Glad you liked it!
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Would you consider letting me add this pattern to the Ravelry database…with you as designer and creator, of course. Several folks have commented on a project made by Fanalaine with this pattern that was recently uploaded.
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Yes. I went on ravelry (since I have a login) and saw the blanket. It is really lovely and I’m not even halfway throught mine! 🙂 You can add it to the database if you like as I put my patterns on my blog to share.
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thanks for the permission. I’ll work on that this evening or tomorrow. Yes, Fanalaine’s interpretation of the pattern is wonderful…that’s what made me want it! I wrote to her and she said she couldn’t remember the site, but gave me the search terms that she googled and the description of your sample. Then I searched and found it.
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I’d love to see a picture if you make one 🙂 . It’s rather fun making a pattern other people like and I was rather pleased with it as you will know if you read the original post. https://rainbowjunkiecorner.wordpress.com/2012/11/12/genesis-of-a-granny-ripple/
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Check it out…here it is uploaded:
http://www.ravelry.com/patterns/library/rainbow-junkies-soft-granny-ripple
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So quick!
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It was easier than I remembered. You can do some others by going to your personal page at Ravelry and clicking on the NOTEBOOK tab and then CONTRIBUTIONS. 🙂
Thanks so much for sharing!
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I need to make this someday Thx !!!! it is pretty!! 🙂
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It’s nice and easy! but then you always like a challenge?
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Hi,
Just wondering if you decided on an edging for this blanket. I’m making a similar blanket but it needs an edging as I’ve made it narrower than I intended!
Thanks
Jo
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In terms of stitches, I chose a very simple though deep edging (after I had straightened out the ripples as you can see here – https://rainbowjunkiecorner.wordpress.com/2013/11/04/my-spectrum-granny-ripple-blanket-is-finished/ Straightening out the ripples is shown here – https://rainbowjunkiecorner.wordpress.com/2013/09/16/im-feeling-so-happy/
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Oh that’s great – thank you. I’ve only just found your blog so hadn’t spotted the other posts! Still working on the main body of the blanket, then I’ll have a go at the edging 🙂
>
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If it’s of any help when you get to the edging, I found that two stitches per row up the sides was the best way to get a flat edge. I worked this as four trebles (US – dcs) into the gaps at the end of alternate rows but any stitch would do and you could do three trebles and one chain per double row or two dc per row…………………………..
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Thank you I love this pattern I am going to make it ry soon
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Glad you like it. I am going to be making another blanket using this in a few months. If you want to know how I squared off the ripples let me know as I was thinking I might do an explanation, tutorial or chart at some point.
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I love the colors in the bottom photo on Pinterest. Do you happen to know what the name of those colors are?
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I suspect that the photo you mean is one of a blanket someone made from my pattern. I don’t like Pinterest but I have sometimes seen things people have taken from my blog. I don’t know the picture you mean as there are so many. Ask the person who put the photo there where it comes from.
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Hi this is an awesome blanket. I would like to know how many balls of each color you needed for the entire blanket and what is its final measurement. Thx so much.
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The details of the yarn for that blanket is here – https://rainbowjunkiecorner.wordpress.com/2012/07/18/an-extravagence-of-yarn/ (so one each of the fifteen spectrum colours and two each of the silver and bluebell.) Width is round about 3ft 7ins by 5ft 4ins. With the border (picture here – https://rainbowjunkiecorner.wordpress.com/2013/11/04/my-spectrum-granny-ripple-blanket-is-finished/) it is about 4ft 7ins by 6ft 4ins.
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Atlast I have the yarn and am ready to start this awesome blanket. Your final measurements were 55″ wide by 76″ long. The customer needs it to be around 94″ wide and 104″ long. Should I increase the interleaving pattern from 2-4-2 to 3-5-3 so it becomes longer than yours? Thanks in advance for your reply.
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You do realise that is more than twice the size of mine. (So twice the amount of yarn I used is unlikely to be enough.) I had never imagined you would be making it any longer as that is how the pattern works out with that number of colours. You could try 3-5-3 to make it longer but do be aware that it is a two row pattern so you may get a less even look. It might be an idea to experiment with a small portion to see if you like the different look.
The only other option would be to increase the number of colours. Maybe have a wider section top and bottom where I have the bluebell and silver. With the same spectrum band in the middle.
It is not really possible in my opinion to get the same look and increase the length.
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Thank you for your prompt reply. I will make a sample and check if it works. The customer is soo in love with this that if the bigger size doesn’t work she wants the same size of yours. She just wants it somehow. ☺
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Well wider is fine but if you make it longer do realise that it will take more yarn than I estimated. As I said two options for making it longer.
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