Designer square sunglasses for women — brand-new-with-tags & authenticated pre-owned frames from Dior in black, tortoiseshell and oversized shapes, priced up to 70% below retail. Verified in London. Worldwide shipping.

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Designer square sunglasses for women at CSD — a London luxury consignment retailer, with brand-new-with-tags and authenticated pre-owned frames priced up to 70% below original retail. The edit spans never-worn and pre-owned square sunglasses, each authenticated in-house by our London team before it is listed. One of a kind, available until it sells, with worldwide shipping from Marylebone Lane, London.

The current edit is led by brand-new-with-tags pieces, listed as never worn, alongside a smaller number of authenticated pre-owned frames. Whether you are searching for pre-owned designer sunglasses or a new square pair at a fraction of boutique price, each is verified, condition-graded and photographed in detail so you can buy with confidence. Because consignment stock is one of a kind, the selection changes continuously as new pieces arrive.

The collection

Square sunglasses offer a structured, contemporary line that flatters rounder and oval face shapes, from clean mid-size to bolder oversized shapes. The edit at CSD is led by frames from Dior — including the Cannage, Pacific and Signature lines — alongside other luxury houses. Frames come in black, tortoiseshell, brown, green, pink, blue and white, with solid, gradient and tinted lenses. Several pieces carry the most-searched oversized shape, and you can also browse oversized square gradient sunglasses, authenticated in London.

Designer square sunglasses

What sets this edit apart is that these are designer square sunglasses, not generic high-street frames. The collection includes square frames from luxury houses such as Dior, each authenticated before listing. For shoppers searching specifically for designer square sunglasses, this means access to current and past-season luxury frames — often brand-new-with-tags — at consignment prices rather than full boutique retail. Several designer square styles feature across the wider edit: discover Miu Miu square sunglasses, authenticated and one of a kind; see also Burberry square sunglasses, authenticated in London; and browse Versace Medusa square sunglasses at CSD.

Square sunglasses for women

The women's edit covers the full range of square frame sizes and colourways, from clean mid-size to bolder oversized shapes. Many pieces are brand-new-with-tags, offering the look and condition of a boutique purchase at a consignment price. For shoppers comparing styles, black and tortoiseshell are the most versatile everyday choices — discover tortoiseshell square sunglasses at CSD — while pink, green and tinted frames make a clearer statement; discover tinted square sunglasses at CSD. Every listing notes the frame shape, colour and lens type so you can find the right pair quickly.

Oversized square sunglasses

One of the most searched-for looks is the oversized square frame, and the edit regularly carries this style — including oversized Dior frames, some with gradient lenses. Oversized square shapes suit those wanting a bold, contemporary statement and balance softer or rounder features. Because each frame is one of a kind, the most sought-after oversized styles tend to sell quickly once listed.

On sale — up to 70% below retail

Every pair here is reduced from original retail, with savings of up to 70%. As authenticated consignment — much of it brand-new-with-tags — a sale price at CSD reflects real value rather than a markdown on an inflated RRP. Prices, condition and availability are shown on every product page, so there are no surprises at checkout. New stock is added continuously, and because each frame is unique, the most sought-after styles tend to sell quickly once listed.

Styling square sunglasses

Frame size is the quickest way to narrow the edit. Mid-size frames read as sleek and everyday, while oversized shapes make a bolder statement and suit those wanting more coverage. Colour is the second filter: black and tortoiseshell are the most versatile, reading as a classic alternative, while pink, green and blue frames lift a neutral outfit. Lens finish is the third consideration — solid lenses for everyday wear, gradient or tinted for a more fashion-led look. Comparing shapes? See rectangular sunglasses alongside square. Because the stock is one of a kind, pairing a specific size with a specific colour is a question of buying when the right pair appears rather than waiting for a restock.

Authentication

Every pair of square sunglasses is authenticated by CSD's in-house specialists in London, with independent verification through Entrupy and RealAuthentication.com applied across our wider luxury catalogue where eligible. The process checks hardware quality, acetate and metal finish, logo placement, hinge construction, lens markings, and case and serial details where present. Nothing is listed without passing this process, and authentication applies equally to pre-owned and new-with-tags pieces. Read how CSD authenticates every piece.

Condition & grading

Each pair is assessed across lenses, frames, hinges and arms, then graded on CSD's condition scale: A (as new, no visible wear), B (excellent, minimal signs of use) and C (good, light surface marks noted). Brand-new-with-tags pairs are listed as never worn, with original tags retained where supplied. Every listing carries written condition notes and close-up images of the frames, lenses and any wear, so you can judge each pair accurately before you buy rather than relying on generic stock photography.

Buy & sell

CSD accepts consignments of authenticated designer square sunglasses and eyewear from women looking to sell pre-owned luxury accessories. Pieces sourced directly from authorised suppliers also enter the collection, which is how brand-new-with-tags stock arrives. Worldwide shipping is available on all orders, dispatched from our Marylebone Lane store in central London, with tracked delivery across the UK and internationally.

Square sunglasses — questions

Are CSD's square sunglasses authentic? Yes. Every pair is authenticated in-house in London before listing, with independent verification where eligible.

Are they new or used? The current edit is led by brand-new-with-tags (never worn) pieces, with a smaller number of authenticated pre-owned frames. Condition is stated on every listing.

Do you stock oversized square sunglasses? Yes — oversized square frames feature regularly in the edit, including designer styles, subject to availability.

Can I buy online and ship to the UK? Yes. CSD ships worldwide, including across the UK, from the Marylebone Lane store in London. Comparing shapes? See oval sunglasses alongside square. Comparing shapes? See cat-eye sunglasses alongside square. See square metal sunglasses at CSD.

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