Specifications
| Style | Clear Flame Prism / K9 Crystal |
| Materials | Hand-cut crystal glass |
| Rim Diameter | 3.15 in / 80 mm |
| Height | 3.54 in / 90 mm |
| Recommended Use | Whiskey, sake, cocktails, neat pours, gifting, display |
| Care | Hand wash recommended. Do not pour boiling water. Avoid dishwasher use and sudden temperature changes. |
Clear Flame Prism K9 Crystal Whiskey Glass – Hand-Cut Crystal Tumbler
$99
The Clear Flame Prism K9 Crystal Whiskey Glass is a bold yet refined crystal tumbler defined by sharp geometry, transparent clarity, and sculptural hand-cut detail.
Description
The Clear Flame Prism K9 Crystal Whiskey Glass is a bold yet refined crystal tumbler defined by sharp geometry, transparent clarity, and sculptural hand-cut detail.
Its design features upward flame-like prism cuts that create a strong architectural rhythm across the glass. The clear K9 crystal body allows light to pass through cleanly, while the angled facets produce crisp reflections and depth from every angle. The heavy faceted lower section gives the tumbler a grounded, premium feel in the hand.
Compared with simpler clear crystal tumblers, this piece has a more dramatic visual structure while still remaining clean and versatile. It is well suited for whiskey, bourbon, cocktails, neat pours, or refined home bar display.
Each glass is individually hand-cut, so slight variations may appear from piece to piece. These subtle differences are part of the beauty of handcrafted crystal glass and make every item unique.
The Craft, in Four Steps
Design Drafting
Each pattern is drawn by hand, mapping how light will travel through every facet.
Initial Cutting
Diamond wheels carve the primary facets. One wrong angle and the piece is lost.
Fine Adjustment
Each facet is refined by hand. Depth, edge, angle - adjusted until geometry becomes art.
Final Polishing
Progressive abrasives bring out optical clarity. Light passes through without distortion.
Why Optical-Grade Crystal?
Our crystal isn't just "glass." It's optical-grade borosilicate - the same material used in telescope lenses and camera prisms, chosen for its extraordinary clarity and precision.
When we set out to make the perfect whiskey glass, we didn't start with tradition. We started with a question: What if the same crystal that helps us see the stars could hold the amber glow of your favorite whiskey?
The result is a glass with >92% light transmission - higher than traditional lead crystal - and a hardness that allows for incredibly precise hand-cut facets. It's lighter than lead crystal, yet more durable and chemically stable.
This isn't a cheaper alternative to crystal. It's a better one.
| Attribute | Optical Crystal (ours) | Lead Crystal | Ordinary Glass |
|---|---|---|---|
| Light Transmission | >92% | >90% | ~85% |
| Refractive Index | High | High | Low |
| Lead Content | Lead-free | 24%+ | 0% |
| Weight | Lighter | Heavier | Light |
| Cut Precision | Excellent | Good | Poor |
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Frequently Asked Questions
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