Masur Birch / Karelian Birch
Betula pendula var. carelica • Exotic/Hardwood
Grain Pattern
Highly irregular and figured; characterized by a 'masur' figure with wavy, curly grain and dark, swirling pith flecks or brownish streaks often resembling grain orientation changes or small burl inclusions.
Color Description
Creamy white to pale yellowish-brown sapwood and heartwood; features distinctive dark brown grain curls and inclusions. It has high luster and can develop a golden-yellow patina over time with light exposure.
Hardness Rating
1,260 lbf (Hard)
Durability Rating
Non-durable to Slightly Durable; susceptible to decay and insect attack if not kept dry or treated; primarily intended for interior decorative use.
Common Uses
Kni-fe handles, luxury furniture, veneer, turned objects, bowls, jewelry boxes, and fine marquetry.
Geographic Origin
Northern Europe, primarily the Karelia region between Russia and Finland, and parts of Scandinavia.
Market Value & Sustainability
Estimated Market Value
$25.00 - $50.00 per board foot, though often sold by the piece or as veneer due to rarity/figuring.
Wood Age Estimate
The sample appears to be freshly milled or recently processed (1-5 years) based on its bright, pale color and lack of deep oxidation or mechanical wear.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List of Threatened Species; however, high-quality figured stock is limited and sought after.
Workability
Difficult due to highly figured grain; tends to tear out during planing or jointing. Responds well to sharp hand tools and sanding. Glues and finishes well.
Notable Features
Notable for its unique 'pith flecks' caused by the larvae of the Agromyza pruinosa fly or genetic variation; has a smooth texture and significant chatoyance in the curly areas.
Finish Recommendations
High-gloss finishes such as lacquer, polyurethane, or oil-based finishes (like Tung oil) are recommended to pop the figure and chatoyance.
Identification Confidence
High; the 'speckled' or 'marbled' pattern of dark inclusions against a light, curly birch background is a definitive diagnostic feature of Masur Birch.