Nobilis Diamond (Port Mourant) No. 21A - Port Morant Still AW 2012
Most enjoy the fresh, fruity Port Mourant profile and honest strength; critics find it sharp, alcoholic and underaged. Consensus: a solid but somewhat raw young continental Demerara.
Fans of dry, high-ABV Demeraras who enjoy young Port Mourant notes—lime, green apple, pepper, licorice—and don’t mind a bit of sharpness in exchange for intensity and no added sugar.
Details about this rum
Live auctions
This rum is currently being offered by one of our verified auction house partners. RumX helps you discover and bid on rare rums.
How does this rum taste?
Young, punchy Port Mourant experience
If you already like young cask-strength Demeraras, this is worth a look: classic PM elements are here, just a bit raw, so it rewards an experienced palate and patient resting time.
Beginners, those sensitive to strong alcohol, or drinkers expecting long-aged smoothness and deep complexity; also not ideal for people who prefer sweet, easygoing sippers.
Community purchases
The RumX community has already added 18 bottles to their collections:
Digitize your rum collection and get exciting insights into the market value of your collection or individual bottles:
You may also enjoy
The identification of similar rums is based on the tasting notes of the community and the key data of the rum.

Romero & Sons Flensburg Rum Company Unaged Heavy Rum (Harboring Premium Rum) 2024
2024 Unaged 60%

Bristol Diamond (Port Mourant) Old Demerara Rum (Port Cask Maturation) 1990
1990 32yr 46,7%

Worthy Park S.B.S Jamaica (Bourbon and Moscatel Cask) Exclusively Bottled For France WPL 2015
2015 9yr 52%
About the Diamond (Port Mourant) distillery
The Diamond (Port Mourant) distillery is located in Guyana. Rums from Diamond (Port Mourant) have been reviewed 268 times with an average of 8.0/10.
By rum lovers, for rum lovers
I'm Oliver – together with Jakob, Robert, and Lukas, we started RumX in 2018 as a small passion project in Stuttgart, back then under the name Rum Tasting Notes.
What began as a digital tasting diary is now the world's most comprehensive platform for rum fans: over 25,000 bottlings, 270,000+ independent reviews, and an active community with 50,000 members. We combine the collective intelligence of our community with an integrated marketplace, allowing you to shop securely and manage your collection directly from the app.
The goal? To offer you, the rum connoisseur, a place where you can choose with confidence—without paperwork, detours, or expert jargon.






















































Beautiful nose that makes you want more! On the palate, unfortunately, too immature, but definitely with good beginnings.
The three Nobilis 21A, B and C in the test...Nose: young and fresh PM. Seems a bit immature and thus slightly sharp. Something slightly metallic underlined the young freshness, just as not yet fully ripe lime. In terms of fruit, green apple is added. Everything is framed by a pleasant honey sweetness and a discreet spiciness of wood and anise. 7.8 Palate: also quite sharp, alcoholic and bitter at the start. Spicy-peppery-salty, with black pepper and licorice. Has a yeasty texture, similar to brioche. Still metallic and slightly nutty at the end. 7.2Seems a bit too immature and impetuous to me. The high abv then underscores this. Overall, somewhat disappointing.
Tropical fruits, spices, lactic acid - the nose of the young continental Demeraras definitely reveals a recurring profile. On the palate, the mineral and spicy notes come to the fore a bit more here; the slightly lactic aromas also remain with us, paired with the sweetness present, these now almost remind us a bit of crème brûlée. The alcohol also makes an appearance, but without becoming too dominant. Also from this bottling I do not need more than the present sample, nevertheless, it is one of the better from the squad of tasted young continental matured Demeraras.
#5390 10.06.2025 Enjoying a few samples while watching a few episodes of Start Trek Discovery. Nose Fresh, light, light wood, light apple, spice, alcoholic, light grass, faint chocolate. Palate Light, alcoholic, light wood, light roasted, dried fruit, faint caramel, light citrus, faint smoke, light salty. Finish Medium long, wood, light roasted, light citrus, faint caramel, faint salty. Empty glass Vanille, caramel, light peach. Needs to rest for a good while for the ABV to settle a bit. ABV integration is not the best.