Striking and modern, octagon cut jewellery features geometric precision and bold style, making each piece a standout statement.
Showing 29 products
Item Ref: NIE7226-GU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Uncover the Astra Lab Emerald and Diamond Halo Shoulder Set Octagon Cut Ring, with a 1.50ct emerald set in in 0.25CT of sparkling H/SI lab-grown diamonds. The deep-green emerald glimmers particularly beautifully when offset by the halo of diamonds, further...
Pay in 3 interest-free
Item Ref: ANIE7226-GU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Uncover the Astra Lab Emerald and Diamond Halo Shoulder Set Octagon Cut Ring, with a 1.50ct emerald set in in 0.25CT of sparkling H/SI lab grown diamonds. The deep-green emerald glimmers particularly beautifully when offset by the halo of diamonds,...
Pay in 3 interest-free
Item Ref: NIE7226-UU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Astra Sapphire Halo Shoulder Set Octagon Cut Ring, featuring an impressive 1.90ct lab-grown sapphire, set amongst a 0.25ct halo of sparkling H/SI lab-grown diamonds. The timeless octagon cut sapphire sits proud atop the pavé diamond shoulders casting sparkle...
Pay in 3 interest-free
Item Ref: ANIE7226-TU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Shop the Astra lab Ruby and Diamond Halo Shoulder Set Octagon Cut Ring, which features a 1.90ct lab grown ruby, set amongst a halo of 0.25ct H/SI quality lab diamonds. The consciously crafted diamonds that surround the main stone and...
Pay in 3 interest-free
Item Ref: NID4226-GU
AVAILABILITY: In stock (21 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Explore the beauty of the Astra Lab Emerald and Diamond Halo Octagon Cut Necklace. The delicate sterling silver chain is interspersed with subtle, encapsulated diamonds, adding extra intrigue to a classic piece. The beautiful 1.50ct lab grown emerald sits within...
Pay in 3 interest-free
Item Ref: NIE7226-TU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Shop the Astra lab Ruby and Diamond Halo Shoulder Set Octagon Cut Ring, which features a 1.90ct lab grown ruby, set amongst a halo of 0.25ct H/SI quality diamonds. The consciously crafted diamonds that surround the main stone and cascade...
Pay in 3 interest-free
Item Ref: ANIE7226-UU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Astra Sapphire Halo Shoulder Set Octagon Cut Ring, featuring an impressive 1.90ct lab-grown sapphire, set amongst a 0.25ct halo of sparkling H/SI lab grown diamonds. The timeless octagon cut sapphire sits proud atop the pavé diamond shoulders casting...
Pay in 3 interest-free
Item Ref: ANID4226-GU
AVAILABILITY: In stock (13 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Explore the beauty of the Astra Lab Emerald and Diamond Halo Octagon Cut Necklace. The delicate 18k gold vermeil chain is interspersed with subtle, encapsulated lab diamonds, adding extra intrigue to a classic piece. The beautiful 1.50ct lab grown emerald...
Pay in 3 interest-free
Item Ref: NID4226-UU
AVAILABILITY: In stock (4 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Learn more about the Astra Lab Sapphire and Diamond Halo Octagon Cut Necklace. The delicate chain - made of the finest sterling silver - is interspersed with subtle, encapsulated diamonds, adding extra intrigue to a classic piece. The beautiful 2.00ct...
Pay in 3 interest-free
Item Ref: NIH6226-GU
AVAILABILITY: In stock (8 items)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Emerald and Diamond Drop Halo Octagon Cut Earrings. These silver hoop earrings - with 0.26ct of H/SI quality pavé diamonds expertly placed across the front – put a modern twist on a traditional hoop earring, with...
Pay in 3 interest-free
Item Ref: ANIH6226-GU
AVAILABILITY: In stock (7 items)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Emerald and Diamond Drop Halo Octagon Cut Earrings. These 18k gold vermeil hoop earrings - with 0.26ct of H/SI quality pavé lab grown diamonds expertly placed across the front – put a modern twist on a...
Pay in 3 interest-free
Item Ref: FET24-GY
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
If you're looking for an eye-catching piece of jewellery for the special lady in your life then this enchanting emerald ring would be a superb choice. The ring features an octagonal 1.00CT solitaire emerald which dazzles brilliantly against the sparkling...
From £68.47 per month
Item Ref: NIH6226-UU
AVAILABILITY: In stock (3 items)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Sapphire and Diamond Drop Halo Octagon Cut Earrings. These silver hoop earrings - set with 0.26ct of H/SI quality, consciously crafted diamonds - break the mould from a traditional hoop with the intriguing addition of 4.00ct...
Pay in 3 interest-free
Item Ref: ANID4226-UU
AVAILABILITY: In stock (14 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Learn more about the Astra Lab Sapphire and Diamond Halo Octagon Cut Necklace. The delicate chain - made of the finest 18k gold vermeil - is interspersed with subtle, encapsulated lab grown diamonds, adding extra intrigue to a classic piece....
Pay in 3 interest-free
Item Ref: ANIH6226-UU
AVAILABILITY: In stock (2 items)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Sapphire and Diamond Drop Halo Octagon Cut Earrings. These 18k gold vermeil hoop earrings - set with 0.26ct of H/SI quality, consciously crafted diamonds - break the mould from a traditional hoop with the intriguing addition...
Pay in 3 interest-free
Item Ref: FET24-G.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The octagonal shape of the central stone in this impressive ring highlights the beautiful green colours of emerald to perfection. 0.50CT of H/SI Quality Diamonds surrounds the 1.00CT emerald and dazzle against the 18K yellow gold band, making this ring...
From £90.81 per month
Item Ref: ANIH6226-TU
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Ruby and Diamond Drop Halo Octagon Cut Earrings. These 18k gold vermeil hoop earrings - encrusted with 0.26ct of H/SI quality pavé lab diamonds - break the mould from a traditional hoop with the intriguing addition...
Pay in 3 interest-free
Item Ref: NID4226-TU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Unearth the Astra Lab Ruby and Diamond Halo Octagon Cut Necklace. The 1.80ct lab grown ruby sits amongst a halo of 0.16ct of consciously crafted H/SI diamonds. The traditional piece is given a modern twist with the addition of subtle...
Pay in 3 interest-free
Item Ref: ANID4226-TU
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Necklaces
VENDOR: The Diamond Store
Unearth the Astra Lab Ruby and Diamond Halo Octagon Cut Necklace. The 1.80ct lab grown ruby sits amongst a halo of 0.16ct of consciously crafted H/SI lab diamonds. The traditional piece is given a modern twist with the addition of...
Pay in 3 interest-free
Item Ref: FET24-UY.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Fall in love with this breathtaking blue sapphire ring which is brilliantly bold in its design. Featuring 0.50CT of H/SI Quality Diamonds, this glamorous ring is completed with a sleek 18K white gold band to create a ring any woman...
From £47.61 per month
Item Ref: NIH6226-TU
AVAILABILITY: In stock (5 items)
PRODUCT TYPE: Earrings
VENDOR: The Diamond Store
Discover the Astra Lab Ruby and Diamond Drop Halo Octagon Cut Earrings. These silver hoop earrings - encrusted with 0.26ct of H/SI quality pavé diamonds - break the mould from a traditional hoop with the intriguing addition of 3.50ct of...
Pay in 3 interest-free
Item Ref: FET24-T.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
An alluring Ruby Ring in 18K Yellow Gold. Claw setting. 0.50CT of H/SI quality diamonds. Free UK delivery and a 5 year guarantee.
From £90.14 per month
Item Ref: FET24-V.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The blazing blue shade of tanzanite means it's one of the most sought-after gemstones in the world. This beautiful tanzanite ring would make a stunning gift for a loved one as the brilliant blue shades of tanzanite are shown off...
From £43.57 per month
Item Ref: ND1MFET24-G
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo engagement ring centres a 1.00ct octagon-cut emerald, framed by a halo of 0.50ct of lab-grown diamonds for added brilliance and impact. Set in 9K yellow gold, the emerald’s vivid green tone is beautifully enhanced by the warm metal,...
From £42.7 per month
Item Ref: ND1MFET24-TY
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo ring centres a 1.10ct octagon-cut ruby, surrounded by 0.50ct of lab-grown diamonds for added brilliance and impact. Crafted in 9K white gold, the ruby’s rich red hue stands out beautifully against the cool-toned metal, while the angular cut...
From £42.7 per month
Item Ref: ND1MFET24-GY
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo engagement ring centres a 1.00ct octagon-cut emerald, framed by a halo of 0.50ct of lab-grown diamonds for added brilliance and impact. Crafted in 9K white gold, the emerald’s vivid green tone is beautifully complemented by the cool-toned metal,...
From £42.7 per month
Item Ref: ND1MFET24-UY
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo ring centres a 1.15ct octagon-cut sapphire, surrounded by 0.50ct of lab-grown diamonds for added brilliance and impact. Crafted in 9K white gold, the sapphire’s deep blue hue is enhanced beautifully by the cool-toned metal, while the angular cut...
From £42.7 per month
Item Ref: ND1MFET24-U
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo ring centres a 1.15ct octagon-cut sapphire, surrounded by 0.50ct of lab-grown diamonds for added brilliance and impact. Set in 9K yellow gold, the sapphire’s deep blue hue beautifully contrasts with the warm metal, while the angular cut brings...
From £42.7 per month
Item Ref: ND1MFET24-T
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This halo ring centres a 1.10ct octagon-cut ruby, surrounded by 0.50ct of lab-grown diamonds for added brilliance and impact. Set in 9K yellow gold, the ruby’s rich red hue is beautifully warmed by the metal, while the angular cut adds...
From £42.7 per month
We want you to feel completely confident when you shop with us. That’s why we offer FREE 30-day returns for refunds and 60-day exchanges across the UK and Northern Ireland.
If you’ve ordered a ring smaller than a size J or larger than a size Q, don’t worry — these are custom sizes, but we’re still happy to offer a free exchange or resizing if the fit isn’t quite right.
Changed your mind? No problem — you can cancel your order anytime before it’s been dispatched.
Just reach out to our friendly team via Live Chat, by email at customerservice@thediamondstore.com, or give us a call on 0345 084 1200 (or +44 345 084 1200 if calling from outside the UK). Please have your order number handy to help us assist you as quickly as possible.
Please note that for rings smaller than size J or larger than size Q, the width may vary slightly (up to 10%) due to the crafting process. If you need any adjustments, we’re happy to help.
If your item arrives damaged or defective, we’ll make it right — fast. We’ll either repair or replace it at no cost to you, or provide a refund once it’s been assessed by our head jeweller.
Our standard returns policy is 30 days to return, and 60 days to exchange.
We stand by the quality of our jewellery. That’s why all our pieces come with a 5-year warranty against defects in materials or craftsmanship. Every item is also fully hallmarked according to UK legislation, confirming its authenticity and origin.
Once we’ve received and inspected your returned jewellery, we’ll process your refund right away and email you to confirm. Depending on your bank or payment provider, it may take 3 to 5 working days to show up on your statement.
We’ll always refund you via the same method you used to make your purchase — whether that was credit or debit card, PayPal, Pay4Later Finance, bank transfer, or another option.
To avoid delays, make sure to include the returns label print-out with your parcel. This helps us identify your return quickly.
We’re proud to say that all our diamonds are conflict-free and fully compliant with United Nations regulations. When you buy from us, you’re choosing ethical beauty.
We’re here whenever you need us.
📧 Email us: customerservice@thediamondstore.com or returns@thediamondstore.co.uk
📞 Call us: 0345 084 1200 (UK) or +44 345 084 1200 (International)
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