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Rainbow & gradient filament, bulk and multi-pack, new, ranked by £/kg

Every listing we track on Amazon UK that matches all of these filters, ranked by £/kg. Remove a filter with its "All" chip to widen the list.

Silk, dual colour and gradient filament explained →

Best £/kg Biggest discount Lowest price Best rated Newest

All (13) On offer now (4)

By material:PLA (7)PETG (3)PLA+ (3)

By finish:All finishes Silk (36)Matte (88)Dual & triple colour (17)Rainbow & gradient (13)Translucent (16)Glow in the dark (3)Wood (1)

By pack:Any pack size Single spools (159)Bulk & multi-pack (13)

By weight:2 kg (5)4 kg (5)10 kg and over (3)

By colour:Beige & natural (1)

Condition:Any condition New (13)Amazon Warehouse (used) (1)

Rating:4.5 stars & up (7)4 stars & up (8)3.5 stars & up (9)

13 listings tracked, 4 on offer right now.

Product	Material	Weight	Rating	Price	Per kg	Deal
IEMAI PETG Filament 1.75mm 10Kg, Gradient Translucent PETG 3D Printer Filament	PETG	10 kg	4.6 out of 5 (223 Amazon ratings)	£84.99	£8.50	15% below
RAMBERY Matte Rainbow PLA 3D Printer Filament Bundle, 10 Colors Total 10kg, 1.	PLA	10 kg	4.9 out of 5 (11 Amazon ratings)	£96.40	£9.64	58% below
IEMAI PETG Filament 1.75mm 2Kg, Gradient Blue Purple/Blue Green Translucent PE	PETG	2 kg	4.6 out of 5 (220 Amazon ratings)	£19.54	£9.77	24% below
RAMBERY 4 Colors Matte Rainbow PLA 3D Printer Filament Bundle Fast Color Chang	PLA	4 kg	4.8 out of 5 (16 Amazon ratings)	£44.59	£11.15	—
LANDU Silk Tri-Color PLA Filament 1.75mm 2Kg, Triple Color Silk PLA Filament,	PLA	2 kg	—	£22.59	£11.30	15% below
RAMBERY 4 Colors Rainbow Silk PLA Filament Bundle Fast Color Change 3D PLA Fil	PLA	4 kg	4.5 out of 5 (149 Amazon ratings)	£46.34	£11.59	—
Conjure Silk PLA Filament 1.75mm, Multicolor Rainbow Filament,4kg Bundle	PLA	4 kg	—	£47.49	£11.87	—
Creality Rainbow PLA+ Filament 1.75mm for 3D Printers, 2kg(4.4lb) +/-0.02mm Di	PLA+	2 kg	5.0 out of 5 (3 Amazon ratings)	£28.34	£14.17	19% below
Conjure PLA Glow Filament 1.75mm, Rainbow Multicolor,2kg Luminous Glowworm	PLA	2 kg	3.8 out of 5 (110 Amazon ratings)	£29.99	£15.00	—
Creality Rainbow PLA+ Filament 1.75mm for 3D Printers, 4kg(8.8lb) +/-0.02mm Di	PLA+	4 kg	—	£61.02	£15.26	—
Creality Hyper PLA Filament 1.75mm, 30-600mm/s High Speed 3D Printer Filament,	PLA	4 kg	—	£66.55	£16.64	—
SUNLU 250G*8 Silk Filament Bundle, PLA+ Rainbow Filament Multicolor, Fast Colo	PLA+	2 kg	4.8 out of 5 (47 Amazon ratings)	£34.99	£17.50	12% below
CHCKX PETG Rainbow 3D Printer Filament Bundle, 10 Rolls Dimensional Accuracy +	PETG	10 kg	4.0 out of 5 (5 Amazon ratings)	£189.26	£18.93	—

Rainbow & gradient filament by brand

Guides

Bed adhesion: what actually works
Glue sticks, hairspray, rafts, brims and expensive surfaces — an honest ranking of what fixes prints coming loose, starting with the free fix that solves most cases.
Do you need a filament dryer?
Wet filament is real and ruins prints, but a dedicated dryer is not the only answer. How to tell if moisture is your problem, and what to do about it.
Filament storage: dry boxes, vacuum bags and desiccant
Keeping filament dry is cheaper than drying it out. What actually works, what desiccant to use, and why the little sachet in the bag is already spent.
First layer calibration, properly
Nearly every adhesion problem and half of all print failures start in the first layer. How to set Z offset by eye, and what a good first layer actually looks like.

Best-selling Filament by year — which actually sold best, going back several years, ranked by sales position rather than opinion.