{"title":"Lab-Grown Cushion Diamond Engagement Rings","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eExplore our collection of lab-grown cushion cut diamond engagement rings from Not Mined, handcrafted in 18ct hallmarked gold and made to order in the UK. The cushion cut — sometimes called the pillow cut — is one of the oldest and most romantic diamond shapes, with softly rounded corners and larger facets that produce a warm, pillow-like glow. Every ring in this collection features an Ideal cut, D colour, VVS+ clarity lab-grown diamond, individually handpicked by our founder and accompanied by an IGI or GIA certificate.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe cushion cut sits between the classic fire of a round brilliant and the clean geometry of an emerald cut, offering the best of both worlds. Its rounded square silhouette and open facets create broad, romantic flashes of light rather than the tight sparkle of a brilliant cut — a quality often described as a crushed ice or chunky mirror effect depending on the facet pattern. It is a shape that feels vintage in character but entirely modern in execution.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe cushion cut looks beautiful in a solitaire setting where its soft shape creates a gentle, approachable feel, equally impressive in a halo design that accentuates its rounded corners, and perfectly suited to three stone arrangements where it pairs naturally with tapered baguettes or round side stones. It is also one of the most versatile shapes for those who want a stone with presence that does not feel sharp or angular.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eYour experience with Not Mined is as considered as the ring itself. Our founder personally handpicks a selection of diamonds for you to choose from, so every stone is judged on its real-world sparkle and quality — not just a certificate. If you want to go further, you can bespoke design your ring from scratch through a relaxed, non-pushy consultation where we guide you to the right choice without the pressure. From purchase to delivery we keep you updated at every stage — confirmation your diamond has been secured, CAD designs shared during crafting if needed, hallmarking updates, and dispatch notification. We target three to four weeks from order to your door.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eChoosing a cushion cut engagement ring from Not Mined means choosing warmth and character backed by the highest standards. 18ct hallmarked gold, top-grade certified diamonds, fully traceable origins, and pricing that lets you invest in timeless design rather than an inflated industry markup.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFind your perfect cushion cut engagement ring below, or book a free consultation if you would like personal guidance from our team.\u003c\/p\u003e","products":[{"product_id":"cushion-hidden-halo","title":"Cushion Hidden Halo","description":"\u003cp\u003e\u003cstrong\u003eCushion Hidden Halo\u003c\/strong\u003e — A refined cushion cut engagement ring featuring a hand-picked, certified lab grown diamond with a discreet hidden halo for added sparkle.\u003c\/p\u003e\u003cp\u003eThe hidden halo sits beneath the cushion cut centre stone, visible from side angles but invisible from above. The cushion shape's soft, rounded corners and brilliant facets create a warm, inviting sparkle that suits both classic and modern tastes.\u003c\/p\u003e\u003cp\u003eEvery centre diamond is hand-picked to our exacting standard: Ideal cut, D colour and VVS clarity or higher — selected not just for certification, but for maximum sparkle and fire with the optimum dimensions. Each centre stone is selected for its warm, lively light performance, with the hidden halo designed to amplify the cushion's natural brilliance and make the stone appear larger.\u003c\/p\u003e\u003cp\u003eQuality and collaboration are at the heart of everything we do. We only use 18k gold for its superior durability and richness of colour — available in yellow gold, white gold or rose gold. Platinum is available on request through our bespoke service. We are happy to hand-pick the perfect diamond for you, or if you prefer more involvement, let us know in advance and we will share a curated selection for you to choose from. For those who want complete control, our bespoke service lets you create your engagement ring from start to finish.\u003c\/p\u003e\u003cp\u003ePerfect for a subtle upgrade in brilliance — hand-picked to our standard, or let us share a curated selection so you can be part of the choice.\u003c\/p\u003e\u003cp\u003eAvailable with lab grown diamond options from 1.0ct to 3.0ct. The total diamond weight will vary by your chosen carat size, with additional brilliance from the surrounding stones. Normally ready within 3–4 weeks with free insured UK shipping and 30-day returns on every order.\u003c\/p\u003e","brand":"Not Mined","offers":[{"title":"18k Yellow Gold \/ 1.0ct","offer_id":54008322720085,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-10CT-YG","price":1995.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 1.0ct","offer_id":54008322752853,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-10CT-WG","price":1995.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 1.0ct","offer_id":54008322785621,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-10CT-RG","price":1995.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 1.5ct","offer_id":54008322818389,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-15CT-YG","price":2350.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 1.5ct","offer_id":54008322851157,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-15CT-WG","price":2350.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 1.5ct","offer_id":54008322883925,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-15CT-RG","price":2350.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 2.0ct","offer_id":54008322916693,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-20CT-YG","price":3250.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 2.0ct","offer_id":54008322949461,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-20CT-WG","price":3250.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 2.0ct","offer_id":54008322982229,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-20CT-RG","price":3250.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 2.5ct","offer_id":54008323014997,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-25CT-YG","price":3850.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 2.5ct","offer_id":54008323047765,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-25CT-WG","price":3850.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 2.5ct","offer_id":54008323080533,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-25CT-RG","price":3850.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 3.0ct","offer_id":54008323113301,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-30CT-YG","price":4750.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 3.0ct","offer_id":54008323146069,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-30CT-WG","price":4750.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 3.0ct","offer_id":54008323178837,"sku":"NM-ER-B1-26-CUSHIONHIDDENHALO-30CT-RG","price":4750.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/3756\/7061\/files\/ChatGPT_Image_Feb_19_2026_10_38_00_PM.png?v=1779787863"},{"product_id":"cushion-cut-solitaire","title":"Cushion Cut Solitaire","description":"\u003cp\u003e\u003cstrong\u003eCushion Cut Solitaire\u003c\/strong\u003e — A timeless cushion cut solitaire featuring a hand-picked, certified lab grown diamond with a soft, pillow-like shape that balances vintage charm with modern brilliance.\u003c\/p\u003e\u003cp\u003eThe cushion cut is one of the oldest diamond shapes, known for its rounded corners and large facets that produce a warm, romantic sparkle. Set simply in four claws, the stone's character speaks for itself — no extra embellishment needed.\u003c\/p\u003e\u003cp\u003eEvery centre diamond is hand-picked to our exacting standard: Ideal cut, D colour and VVS clarity or higher — selected not just for certification, but for maximum sparkle and fire with the optimum dimensions. Each cushion is selected for its warm, lively light performance and beautiful appearance on the hand, assessed not just for certification but for the quality of sparkle only visible in person.\u003c\/p\u003e\u003cp\u003eQuality and collaboration are at the heart of everything we do. We only use 18k gold for its superior durability and richness of colour — available in yellow gold, white gold or rose gold. Platinum is available on request through our bespoke service. We are happy to hand-pick the perfect diamond for you, or if you prefer more involvement, let us know in advance and we will share a curated selection for you to choose from. For those who want complete control, our bespoke service lets you create your engagement ring from start to finish.\u003c\/p\u003e\u003cp\u003eChoose this for a classic shape with a warm, romantic feel — hand-picked to our standard, or create a fully bespoke version tailored to you.\u003c\/p\u003e\u003cp\u003eAvailable with lab grown diamond options from 1.0ct to 3.0ct. Normally ready within 3–4 weeks with free insured UK shipping and 30-day returns on every order.\u003c\/p\u003e","brand":"Not Mined","offers":[{"title":"18k Yellow Gold \/ 1.0ct","offer_id":54008323211605,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-10CT-YG","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 1.0ct","offer_id":54008323244373,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-10CT-WG","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 1.0ct","offer_id":54008323277141,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-10CT-RG","price":1795.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 1.5ct","offer_id":54008323309909,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-15CT-YG","price":2250.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 1.5ct","offer_id":54008323342677,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-15CT-WG","price":2250.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 1.5ct","offer_id":54008323375445,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-15CT-RG","price":2250.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 2.0ct","offer_id":54008323408213,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-20CT-YG","price":2995.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 2.0ct","offer_id":54008323440981,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-20CT-WG","price":2995.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 2.0ct","offer_id":54008323473749,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-20CT-RG","price":2995.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 2.5ct","offer_id":54008323506517,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-25CT-YG","price":3750.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 2.5ct","offer_id":54008323539285,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-25CT-WG","price":3750.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 2.5ct","offer_id":54008323572053,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-25CT-RG","price":3750.0,"currency_code":"GBP","in_stock":true},{"title":"18k Yellow Gold \/ 3.0ct","offer_id":54008323604821,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-30CT-YG","price":4495.0,"currency_code":"GBP","in_stock":true},{"title":"18k White Gold \/ 3.0ct","offer_id":54008323637589,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-30CT-WG","price":4495.0,"currency_code":"GBP","in_stock":true},{"title":"18k Rose Gold \/ 3.0ct","offer_id":54008323670357,"sku":"NM-ER-B1-27-CUSHIONCUTSOLITAIR-30CT-RG","price":4495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/3756\/7061\/files\/ChatGPT_Image_Feb_11_2026_05_57_36_PM.png?v=1779791378"}],"url":"https:\/\/www.notmined.co.uk\/collections\/cushion-engagement-rings.oembed","provider":"Not Mined","version":"1.0","type":"link"}