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Promotion 
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Diamond offer Costco
There are 6 new Diamond offers available in the Costco leaflet from 03/12/2025.
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Insignia Diamond 1000mm Quadrant Steam Shower in 2 Colours
£999.99
Insignia Diamond 900mm Quadrant Steam Shower in 2 Colours
£999.98
Insignia Diamond 1400 x 900 Steam Shower in 2 Colours
£1,199.98
Insignia Diamond 1100mm Offset Quadrant Steam Shower in 2 Colours
£899.99
Insignia Diamond 1050 x 850mm Rectangular Steam Shower in 2 Colours
£999.99
Insignia Diamond 1150 x 850mm Rectangular Steam Shower in 2 Colours
£999.99
Offer history
Diamond is currently on offer at Costco, with the lowest price now £899.99. Based on offer history, we expect it to return in week 51.
Stores with Diamond in their assortment
Costco
TK Maxx
Toolstation
The Range
Aldi
Musgrave MarketPlace
Millets
Sainsbury's
Footasylum
JD Sports
Booker Wholesale
Pandora
Morrisons
Alpinetrek
Ultimate Outdoors
F. Hinds
FRMODA
Machine Mart
Boots
Lidl
Sports Direct
Asda
Lakeland
Look Fantastic
Nearest branch
This Diamond offer Costco is available in the following branches based on your set location:
London
Diamond price Costco🕒
| Offer | Name | Store | Regular price | Offer price | Promotion | Start date | End date |
|---|---|---|---|---|---|---|---|
| Insignia Diamond 1100mm Offset Quadrant Steam Shower in 2 Colours | Costco | £899.99 | 01 December 2025 | 07 December 2025 | ||
| Insignia Diamond 900mm Quadrant Steam Shower in 2 Colours | Costco | £999.98 | 01 December 2025 | 07 December 2025 | ||
| Insignia Diamond 1400 x 900 Steam Shower in 2 Colours | Costco | £1,199.98 | 01 December 2025 | 07 December 2025 | ||
 | 0.36ctw Round Brilliant Cut Diamond Earrings, 14ct White Gold | Costco | £459.99 | 24 November 2025 | 30 November 2025 | ||
 | Round Cut Amethyst & 0.24ctw Diamond Earrings, 18ct Yellow Gold | Costco | £719.98 | 24 November 2025 | 30 November 2025 | ||
 | 0.50ctw Round Brilliant Cut Diamond Cross Pendant, 14ct Yellow Gold | Costco | £799.99 | 24 November 2025 | 30 November 2025 | ||
 | 1.00ctw Round Brilliant Cut Diamond Earrings, 14ct White Gold | Costco | £849.99 | 24 November 2025 | 30 November 2025 | ||
 | 0.73ctw Princess Cut Diamond Stud Earrings, 14ct White Gold | Costco | £1,099.99 | 24 November 2025 | 30 November 2025 | ||
 | 2.00ctw Round Brilliant Cut Diamond Eternity Ring, 18ct Yellow Gold in 6 Sizes | Costco | £1,999.99 | 24 November 2025 | 30 November 2025 | ||
 | 2.00ctw Round Brilliant Cut Diamond Tennis Bracelet, 18ct White Gold | Costco | £2,299.99 | 24 November 2025 | 30 November 2025 | ||
 | 4.00ctw Round Brilliant Cut Diamond Inside Outside Hoop Earrings, 14ct White Gold | Costco | £3,999.99 | 24 November 2025 | 30 November 2025 | ||
 | 5.00ctw Round Brilliant Cut Diamond Tennis Necklace, 14ct White Gold | Costco | £5,199.99 | 24 November 2025 | 30 November 2025 | ||
 | 10.00ctw Round Brilliant Cut Diamond Tennis Necklace, 14ct White Gold | Costco | £9,999.98 | 24 November 2025 | 30 November 2025 | ||
 | 12.00ctw Round Brilliant Cut Diamond Tennis Necklace, 14ct White Gold | Costco | £10,999.99 | 24 November 2025 | 30 November 2025 | ||
 | 6.00ctw Round Brilliant Cut Diamond Tennis Bracelet, 18ct White Gold | Costco | £5,499.99 | 24 November 2025 | 30 November 2025 | ||
 | 8.00ctw Round Brilliant Cut Diamond Tennis Bracelet, 18ct White Gold | Costco | £7,599.98 | 24 November 2025 | 30 November 2025 | ||
 | Finch Grey Faux Leather Diamond Stitch Dining Chair, 2 Pack | Costco | £114.99 | 17 November 2025 | 23 November 2025 | ||
 | 0.60ctw Round Brilliant Cut Diamond Circle Pendant, 18ct White Gold | Costco | £999.99 | 06 October 2025 | 12 October 2025 | ||
 | Insignia diamond 1000m quadrant steam shower | Costco | 23 January 2023 | 12 February 2023 | |||
 | Insignia Diamond 1050 x 850mm Rectangular Steam Shower in 2 Colours | Costco | £1,049.99 | 29 November 2021 | 05 December 2021 | ||
 | Green Tourmaline and 0.48ctw Diamond Necklace, 18ct White Gold | Costco | £4,999.89 | 29 November 2021 | 05 December 2021 |