Riedel Decanter Cornetto Onyx

Quick Overview: A handmade crystal decanter from Riedel with a long, slender silhouette and two striking integrated black stripes. 1200ml total capacity, designed for a standard 750ml bottle, 325mm tall, presented in a Riedel gift box.

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What Customers Ask About the Cornetto Onyx Decanter

The Cornetto's slim profile is unusual in that it suits both young and mature wines well. Older Burgundies, aged Bordeaux, and more delicate reds particularly benefit from the gentler pace of aeration, which lets aromas open up without flattening the wine. Younger tannic reds (Cabernet, Syrah, Barolo) also work well, though they may need a little more time in the decanter than they would in a wider-bowled vessel.

Most decanters use a wide, low bowl to maximise the wine's surface contact with air, which transforms young, tannic reds quickly. The Cornetto's narrower silhouette does the opposite, exposing less of the wine to oxygen at any one time. The result is gentler, more gradual aeration, which is exactly what older or more delicate wines need; over-aerated, they can lose the very character that made them worth ageing in the first place. Younger reds still open up beautifully, just at a more patient pace.

Yes, in most cases the difference is immediately apparent at the table. With younger reds the change can be dramatic: tightly knit tannins begin to soften and aromas that were closed in the bottle open up within twenty to thirty minutes. With older wines the effect is gentler, more about pouring the wine cleanly off any sediment and letting it settle than transforming it. The Cornetto's slim shape makes that gentler approach easier to achieve, which is much of the reason it suits aged bottles so well.

Each stripe is created by integrating a rod of black crystal directly into the molten body of the decanter while it is being shaped. The colour becomes structural rather than applied, which means it will not wear, scratch off, or fade over time. The technique asks for skilled hands at every stage, and the slight variation in how the black catches the light from one piece to the next is part of what makes each Cornetto subtly individual.

It is a strong choice for any of those. The handmade crystal, the distinctive silhouette, and the striking black detail give it the visual character of a considered gift rather than a default. The Riedel presentation box is well finished and arrives ready to give as it is. For a housewarming in particular, the Cornetto reads well on a sideboard or dining table even between occasions, which means the recipient sees it regularly rather than only when entertaining.

Understanding the Slim Decanter Approach

Most decanters use a wide, low bowl on the principle that maximising surface area helps wine open up quickly. That works brilliantly for younger, tannic reds where you actively want oxygen doing fast work to soften the wine. But for older or more delicate bottles, that same rapid aeration can flatten the wine before you have finished drinking it, stripping out the secondary and tertiary aromas that years of ageing developed.

The Cornetto's slim profile takes the opposite approach. The narrower bowl exposes less of the wine to air at any moment, which slows the pace of aeration and preserves the subtleties that older vintages spent years acquiring. It is, in some ways, the decanter equivalent of choosing the right glass for the wine rather than using one shape for everything.

In practical terms, the Cornetto is the more versatile choice for anyone whose drinking leans towards aged Burgundy, mature Bordeaux, or the kind of older bottles you bring out for a specific occasion. Younger reds still work well, just with a slightly longer time in the decanter to compensate. As an object on the table, the elongated shape catches light differently from a wide-bowled decanter; it reads as elegant rather than dramatic, and the integrated stripes give it real visual character even between uses.

Specifications

Care & Use Instructions

Handwash only: The handmade crystal and slender shape mean the dishwasher is best avoided. Warm water and a small amount of mild, non-abrasive detergent is all that is needed for routine cleaning.

Riedel Bottle Cleaner is recommended: For this design Riedel specifically recommends their Bottle Cleaner, the small steel beads in a soft pouch, which can be useful for lifting residue from the inner walls of the elongated body without scrubbing. Add the beads with a little warm water, swirl gently, then rinse out thoroughly. Make sure no beads remain in the decanter before drying.

Rinsing technique: Hold the decanter steady by the base and pour warm water through, swirling gently so the water reaches the full interior. The narrow shape means it takes a moment longer to rinse fully than a wide-bowled decanter, but most residue comes away without scrubbing.

Drying: Drain inverted on a clean, lint-free cloth or a purpose-made decanter drying stand. The slim profile and 325mm height mean trapped moisture takes time to escape, so leave the decanter to air-dry completely before covering or storing.

Storage: Store upright on a stable, flat surface with adequate clearance above for the 325mm height. The original Riedel presentation box works well for longer-term storage, particularly because the slim shape benefits from protection on all sides rather than just from above.

Polishing: A soft, lint-free or microfibre cloth on the exterior keeps the crystal bright. Hold the body firmly whilst polishing and avoid putting torque on the slender neck. For water marks, a small amount of white vinegar in the final rinse helps.

Decanting in practice: Pour wine slowly down the inner wall of the decanter so it spreads cleanly across the surface. Young, tannic reds typically benefit from 30 to 60 minutes in the Cornetto, slightly longer than in a wider-bowled decanter because the surface area exposed to air is smaller. Older, more delicate wines often need only a few minutes to settle after being poured. Trust the bottle in front of you rather than a fixed rule.

Why Buy From The Riedel Shop?

We specialise in Riedel glassware and have built our expertise around helping customers choose the right pieces for the way they actually drink and serve wine. The Cornetto is one of those decanters where the design is genuinely doing something different, and we are happy to talk through whether the slim profile suits your wine drinking habits.

Our Guarantees to You

• ✓ No Quibble Returns
• ✓ Half-Price Accidental Breakage Replacement (2 Years)
• ✓ Price Match Guarantee

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Frequently Asked Questions

Standard delivery to mainland UK addresses typically takes 3-5 working days and is free for orders over £49. Next day delivery may be available for £9.95 on orders placed before 1pm Monday to Thursday, depending on your location and our stock levels. The handmade crystal and tall shape are packed with additional protective material to keep them safe in transit.

Our no quibble return guarantee covers goods even after use, as long as the decanter comes back in resaleable condition and in its original Riedel gift box. Please wrap or box it appropriately for transit so the handmade crystal and elongated shape are protected on the journey back.

If the decanter is broken accidentally within 2 years of purchase, we will replace it at half the current retail price, subject to proof of purchase and evidence of the breakage (a photo is fine). We log purchases at point of sale, and online orders are automatically recorded in our system. A bank statement is also acceptable as proof of purchase if you do not have the original receipt.

These are expected in handmade Riedel crystal and are not faults. Each Cornetto is shaped by hand by Riedel's master glassmakers using traditional techniques, and small variations, fine bubbles, or subtle surface marks are part of how the piece is made. They are also part of why each decanter ends up subtly different from the next, which is much of the appeal of handmade crystal over machine-made glassware.

Warm water and gentle handwashing are recommended for the Cornetto. For this design Riedel does recommend their Bottle Cleaner (the small steel beads in a soft pouch), which can be useful for shifting residue from the inner walls of the elongated body without scrubbing. Always rinse the beads out thoroughly afterwards and check none remain inside before drying. Stand the decanter inverted on a clean cloth or drying rack until fully dry inside before storing.

It depends on the wine and on your taste, but as a starting point, young tannic reds tend to open up well over 30 to 60 minutes in a Cornetto, slightly longer than in a wider-bowled decanter because the surface area exposed to air is smaller. Older, more delicate wines often need only a few minutes to settle after being poured. The slim profile is particularly forgiving with aged bottles where gentler aeration is the point.

The 1200ml is the total internal capacity of the decanter; the 750ml is the volume of wine it is designed to hold (one standard bottle). The extra space is deliberate: it gives the wine room to spread and breathe, lets you swirl the decanter without splashing, and leaves headroom for the wine's aromas to develop in the upper part of the vessel. Filling a decanter to the brim defeats much of the point of decanting in the first place.

The decanter arrives in a Riedel-branded presentation box, which is well finished and looks ready to give as it is. Most customers keep the box afterwards for storage between occasions and to protect the handmade crystal, which benefits from being boxed up rather than left exposed in a cupboard.

Each Cornetto carries the Riedel mark on the base, and authenticity is confirmed by the Riedel-branded presentation box and any accompanying documentation. Every decanter sold through The Riedel Shop is genuine and sourced directly from Riedel.

The colour is structural rather than applied to the surface. Each stripe is created by integrating a rod of black crystal into the molten body of the decanter during shaping, so the colour runs through the glass itself. It will not scratch off, fade, or wear with use or washing.

Yes. Our price match guarantee applies with the usual conditions: the competing item needs to be identical in specifications, collection, and packaging, available with the competitor on the day, and stocked by a UK retailer. Get in touch with the listing details and we are happy to check.