I can't suggest strong purple sew-on stones, Alangus but I can suggest one very good UK source of excellent budget rhinestones in general.
I've been loathe to mention them unless requested simply because there's so much "anything that isn't Swarovski/Preciosa isn't good enough" attitude around and as their price is only a tiny fraction of the others, I'm not prepared to face the dismissive judgmental comments based on big brand blindness. This is based on my FB experience rather than here, I hasten to add, but it makes me reticent nevertheless.
The ones I've used since Sept 2016 always get compliments and at their price we can actually afford the level of stones often used in the ballroom and to encrust her shoes too. I've made her bangles with them to match her various dresses too - the 2 row ones are about 150 stones and the 3 about 225 so she'd be lucky to have one pair in Swarovski! She wears some bought Swarovski accessories such as choker and earrings (Christmas presents) and they are certainly not overpowered by them. In fact she's not asked for Swarovski since she realised just how good ours looked next to them. I tried to video one leotard just now but even though they're blinding under my table lamp, it just isn't picked up the same by my camera.
Do try a free sample and judge for yourself. They have big sew-on stones (crystal ab only) although imo their cut isn't proportionally as detailed as the Preciosa ones I have and imperfections in the ab coating can be seen closeup but still look very good in performance. Their other stones (generally ss16-30 in colours, ss10-40 in crystal ab) are very good indeed both in hotfix and non-hotfix. I use the latter generally but have used hot-fix with glue with just one occasion when a few came off and they replaced them all foc without question and without me even asking - great service and
a very reliable and trustworthy supplier. They also have half pearls at very low prices, perfect for a one-wear outfit and even some ready-stoned lace appliqués. I can recommend Rhinestone HQ without reservation. They are on
Facebook and
online, even their basic delivery almost always arrives the next day and the owner Zeynep Jennings has rushed off an urgent order to me within minutes of my message enquiry to her.
They are currently in the process of moving over to a replica 2088 cut stone in crystal ab so their previous stock (that I'm still using) is currently being sold off at a
really low price.
Foxtrot navy yoke & sleeves - Swarovski choker ss30 with Rhinestone HQ stones ss10/16/20 on dress The teardrop stones are all sew-on
Set of bangles with SS16 stones