**Porcelain Buying Guide: How to Choose Quality Pieces**
TL;DR: Inspect the body for uniform whiteness and fine texture, then tap the piece to listen for a high-pitched ring that indicates density. Verify the maker’s mark and check for glaze continuity to ensure the item is authentic and structurally sound.
Understanding Porcelain Types
Before purchasing, distinguish between true porcelain and stoneware or earthenware. True porcelain, often called “China,” is fired at very high temperatures, resulting in a vitrified body that is semi-translucent. Understanding this difference is crucial because it affects durability, weight, and value. Soft-paste porcelain, common in older European pieces, is slightly more porous than hard-paste varieties. Identify the specific type by examining the thickness and translucency of the rim.
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Step-by-Step Inspection
Begin by holding the piece up to a light source. High-quality porcelain allows light to pass through the thin edges, revealing a delicate glow. Look for any cloudiness or opacity, which may indicate lower firing temperatures or inferior clay mixtures. Next, run your fingers over the surface. The glaze should feel smooth and consistent, without any rough spots, drips, or air bubbles. Check the base for stability and ensure the foot ring is even. An uneven base can cause the item to wobble, leading to premature wear or breakage during use.
Testing Acoustics and Integrity
One of the most reliable tests for quality is the “tap test.” Gently tap the side of the porcelain with a fingernail or a small metal utensil. A high-quality piece produces a clear, ringing tone that sustains briefly. A dull thud suggests internal cracks, crazing, or a less dense body. Listen carefully; even faint cracks can compromise structural integrity. Additionally, inspect the glaze for crazing, which consists of a web-like pattern of tiny cracks. While sometimes intentional in artistic pieces, unexpected crazing in functional ware can trap food particles and bacteria.
Verifying Provenance
Always check the manufacturer’s mark on the underside. Authentic pieces from reputable studios or historical factories will have distinct, consistent markings. Research the specific logo to confirm authenticity. For vintage items, the mark’s style can help date the piece. Be wary of generic or missing marks on expensive-looking items, as these are often red flags for counterfeits or low-quality imitations.
FAQ
Q: Is all white ceramic porcelain?
A: No, only ceramics fired at high temperatures with specific kaolin clay compositions are true porcelain; others are stoneware or earthenware.
Q: Can I microwave porcelain dishes?
A: Most high-quality porcelain is microwave-safe, but check for metallic glazes or decorations that may spark or heat unevenly.
Q: How do I clean antique porcelain safely?
A: Use warm soapy water and a soft cloth, avoiding abrasive sponges or harsh chemicals that can damage the glaze or paint.
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