What can have coloured my silk?

I have just prepared a variety of silk fibres and yarns ready for dyeing. There are several winter markets coming up so I thought I ought to get started - but without the usual panic and rush!

Maybe this was a bad idea! ALL the fibres and yarns were Mulberry silk so white rather than cream or caramel coloured. I scoured them all first - but in separate pans as I didn't want the fibres attaching themselves to the yarns.

 I had already mordanted alpaca and romney so the mordant was an exhaust bath being re-used, it had had alum and cream of tartar in (hopefully taken up by the wooly yarns) so I added a different proportion of alum and cream of tartar for the silks. The liquid was CLEAR, absolutely no sign of any colour before I entered the silk. The silk was still white before being entered.

The liquid was heated to about 45 degrees and then left for a day - I like the mordant to have a good length of time with the fibres! When I took the lid off to srain out ready to use again I had something of a shock! 

All the fibres had changed colour to a lovely shade of peach! The liquid has remained colourless - hopefully you can see that from the yarn picture. The mordant bath is stainless steel and there is nothing unusual about the alpaca and romney that came out before. (The green you can see is the tags I use for labelling my yarns - and no, none of the ink has come off either!)) I am sure there is no iron contamination and although I do sometimes add in tannin when mordanting silk (correct historically) there was none present here.

The white tub shows the silk caps that have been taken out of the bath - they really are very pretty, but what can be the colour?

I haven't yet tried to dye any of the fibres - that will be the next interesting challenge,

Has anyone had a similar experience - or any suggestions? I'll let you know how I get on with the dyeing in due course!

New Yarns, New Show

We are off to a new show this weekend in Harrogate - have no idea what it will be like as it clashes with the Knitting and Stitching Show, so most textiley people will probably go there - but maybe if they're doing a couple of days they'll consider coming to the showground for this one - Living North The essence of Christmas. We are going along with WiRE a networking and business support group for women. I have been a member for many years and I really appreciate the work they put in to get information and support for small businesses - I highly recommend membership and getting involved, they are always on the lookout for new events and lobbying MP's etc on women's behalf!

I LOVE silk - I started out spinning and dyeing silk to make embroidery threads, then I started buying in machine spun silk (and dyeing it!) in various thicknesses to suppliment my embroidery yarns. It didn't take me long to realize that the 20/2 mulberry silk that I was buying was perfect as a lace knitting yarn - so I started producing my Gunnister Style Purse Kits, (believe it or not this was at the end of the '90's!) so soon this yarn will be available to buy in lace weight hanks! I am adding to the silk knitting range with a beautiful boucle and also a multiple ply thread which is almost aran thickness - and very lush!

The other very special newbie yarn is a 50% baby alpaca and 50% silk DK weight yarn that is so delicious I've christened it Delice! A good friend and knitting designer is currently at work creating a pattern for the yarn but I'm sure when you've seen and squished it you'll be inspired to produce something yourself!