Kumja Moon Set 03 Extra Quality -

When a product label includes the words "Extra Quality," it is easy to dismiss it as marketing fluff. In Kumja’s case, it is a technical certification. Here is what separates the Kumja Moon Set 03 Extra Quality from the standard edition:

Kumja fires their wares in a traditional climbing kiln. The hottest, most stable spot is the "Sweet Tooth" of the kiln. Extra Quality pieces are exclusively sourced from this zone, ensuring vitrification (zero water absorption) and a distinct ping sound when flicked with a fingernail—like a bell, not a thud. kumja moon set 03 extra quality

If you are fortunate enough to acquire a boxed Kumja Moon Set 03 Extra Quality, here is what the spec sheet claims: When a product label includes the words "Extra

| Feature | Specification | | :--- | :--- | | Diameter | 7.8 inches (198mm) | | Height | 2.9 inches (74mm) | | Volume | 28 oz (830ml) – perfect for pho or pasta | | Weight (per bowl) | 485g ± 3g | | Material | Porcelain stoneware from Icheon, Korea | | Glaze | Iron-saturated celadon with cobalt flecks | | Finish | Matte-satin (not glossy, not bone dry) | | Microwave/Dishwasher | Yes (though hand-washing is recommended for Extra Quality) | The hottest, most stable spot is the "Sweet

| Map Type | Resolution | Format | Bit Depth | Compression | |----------------|------------|--------|-----------|--------------| | Albedo | 8192² | PNG | 16-bit | None (lossless) | | Normal (DXT5nm)| 8192² | TGA | 8-bit per channel | BC5 | | Roughness | 8192² | PNG | 8-bit | BC4 | | Displacement | 8192² | EXR | 16-bit float | None | | Emission (Glow)| 4096² | PNG | 8-bit | BC1 (for alpha) |

VRAM footprint (single instance): ~1.2 GB (LOD0). Use LOD1 for real-time rendering on 8GB+ GPUs.

In ceramic production, "pinholes" (tiny air bubbles in the glaze) are common. For a standard Set 03, up to 5 pinholes per bowl are acceptable. For the Extra Quality designation, the piece is rejected if even one pinhole is visible under 10x magnification.