Specifications
| Style | Clear Prism / K9 Crystal |
| Materials | Hand-cut crystal glass |
| Rim Diameter | 3.15 in / 80 mm |
| Height | 3.54 in / 90 mm |
| Recommended Use | Whiskey, bourbon, cocktails, neat pours, gifting, home bar display |
| Care | Hand wash recommended. Do not pour boiling water. Avoid dishwasher use and sudden temperature changes. |
Clear Prism Whiskey Glass – Hand-Cut K9 Crystal Tumbler
$99
The Clear Prism Whiskey Glass is a clean and understated crystal tumbler designed for those who appreciate quiet luxury and precise craftsmanship.
Description
The Clear Prism Edo Kiriko Whiskey Glass is a clean and understated crystal tumbler designed for those who appreciate quiet luxury and precise craftsmanship.
Unlike heavily patterned cut glass, this design focuses on clarity, proportion, and vertical prism-like cuts that create subtle reflections from every angle. The transparent K9 crystal body gives the glass a bright, refined appearance, while the faceted lower section adds structure, weight, and a polished sense of depth.
Its minimalist look makes it highly versatile for whiskey, bourbon, cocktails, neat pours, or everyday home bar use. The clean silhouette also pairs well with both modern interiors and classic bar settings, making it a strong choice for gifting or refined table presentation.
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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