The Obsidian Mismatch 7621 is the KM our team at Melbourne's Shisha Store points to when a customer wants something visually unusual on a serious cooling platform. The "mismatch" is the design conceit — an oxide finish paired with deep columnar engraving that shouldn't work together but does, and at 85 cm it has the cooling column to back the look up.

Oxide + Engraving · 85 cm Cooling · Crest Tray

Khalil Mamoon Obsidian Mismatch 7621 — 85 cm oxide KM with engraved column

Why the Obsidian Mismatch is different

• Unique oxide stem finish paired with deep columnar engraving — a deliberate aesthetic mismatch that gives the pipe its name and its character
• 85 cm height delivers excellent smoke cooling — slotted between the 80 cm Classic Oxide and the 90 cm Red Phenix in the lineup
• Deep engraving on the column adds visual depth that catches the light beautifully
• Crest tray with KM stamp completes the ornamental detailing
• Wide-bore downstem keeps the draw effortless and the clouds dense
• Single ball-bearing purge clears stale smoke between rotations

Setting it up

• Fill the base so the downstem sits 15–20 mm beneath the waterline
• Seat the stem on the grommet and check the hub seal
• Pack the clay bowl loosely to 2–3 mm below the rim
• Foil, even hole spread, 2–3 lit coconut coals on top
• Draw gently and purge between rotations

Care

• The oxide finish is meant to age — don't try to polish it back to factory shine
• Use a soft brush to clear any debris from the engraved channels
• Flush stem and downstem with warm water after each session
• Soft brush and warm water for the glass base
• Rinse the purge port if it sticks
• Replace the non-washable hose when ghosting appears

Specifications

In the box

• 1 × Khalil Mamoon Obsidian Mismatch 7621 stem
• 1 × Hand-painted glass base (~30 cm)
• 1 × Egyptian clay bowl
• 1 × Metal tray with KM stamp
• 1 × Non-washable hose
• 1 × Tongs and grommet set

Frequently asked

Will the oxide finish keep changing over time?

Yes — that's part of the appeal. The oxide deepens and develops character with use, particularly around the engraved sections where it pools.

How does it compare to the 80 cm Classic Oxide?

The Obsidian Mismatch is taller (85 vs 80 cm) and adds the engraved column detail and crest tray — more visual interest and slightly more cooling.

Can I see the engraving and oxide finish in person?

Yes — pop into Melbourne's Shisha Store and our team will set it up under proper lighting alongside the rest of the oxide KM range.

We dispatch from our Melbourne store with same-day dispatch on weekday orders placed before 2pm AEST. Free standard shipping on orders over $150 — or visit us in person at Melbourne's Shisha Store for same-day pickup.