Big-Leaf Maple Burl Grading

Grading System
Grade Term	Percent of Burl Figure	Major Faces Showing Burl	Figure Presentation	Additional Characteristics
Mill Run	30%+	1 or more	Apparent	May contain bark inclusions, voids, live edge in body, corners, and edges.
Select	50%+	1 or more	Apparent to Very Apparent	May contain bark inclusions and voids within the face, or corners and edges of the face.
Premium	50%+	2 or more	Very Apparent	May contain bark inclusions on corners and edges, with general uniform figure throughout piece.
Artisan	60%+	2 or more	Very Apparent to Vivid	May contain voids, bark inclusions, wane, live edge, natural top, spalting, wild grain/colors.
Gallery	75%+	All	Vivid	Visible defects are limited to corner turnout and small inclusions on edges of best face or shallow center area of lesser face; figure presentation is uniform over 80% of area.
Museum	85%+	All	Vivid	Visible defects are limited to corner turnout and small inclusions on edges of best face or shallow center area of lesser face; figure presentation is uniform over 80% of area.