Wine Diamonds: The Sparkling Secret in Your Glass
As we celebrate 100 years of Purbrick family winemaking at Tahbilk, we’re raising a glass to the stories, traditions, and surprises that come with every bottle. And this year, one of those surprises might just sparkle a little more than usual…
What Are Wine Diamonds?
If you’ve ever opened a bottle of wine and noticed tiny, glittering crystals on the cork or at the bottom of the bottle, you’ve discovered wine diamonds—the affectionate name for tartrate crystals. These natural formations occur when potassium bitartrate, a compound derived from tartaric acid (one of the main natural acids in grapes), crystallises in the bottle, especially when the wine is stored in cooler conditions.
They might look like sugar or tiny shards of glass, but rest assured, wine diamonds are completely harmless and tasteless. They’re simply a visual reminder of wine’s natural origins and gentle handling.
Why Do They Appear?
Wine diamonds are more common in white and sweet wines, particularly those that haven’t undergone a process called cold stabilisation. At Tahbilk, we honour minimal-intervention winemaking, allowing the wine to express its full character, even if that means a few crystals appear along the way.
Our Cane Cut Marsanne, a beautifully luscious dessert wine, occasionally reveals these sparkling gems. It's a style that's perfectly suited to showcasing this natural phenomenon.
A Diamond Celebration
To mark our centennial year of family ownership and winemaking at Tahbilk, we’re thrilled to offer a special gift:
Receive a FREE bottle of Diamond Cane Cut Marsanne with every wine purchase at the Tahbilk Cellar Door, while stocks last.
It’s our way of sharing this milestone with you, our valued guests and community.
Wine Diamonds: A Natural Wonder
These tiny crystals are nothing to worry about. Just pour gently, leave the last sip behind if you prefer, or enjoy the full experience—wine diamonds and all. They’re a small, sparkling testament to nature, time, and the care behind every bottle.
Join us at Tahbilk, discover the story in every glass, and take home a little piece of our history—perhaps even with a few wine diamonds included.
