Front
Method
Border
Left / Right
56.0 / 44.0
Top / Bottom
54.1 / 45.9
Yaw
+0.08° CW
Corner Readings · Millimeters
Top Left
X 2.80 · Y 2.60
Top Right
X 2.10 · Y 2.70
Bottom Left
X 2.80 · Y 2.30
Bottom Right
X 2.30 · Y 2.20
Official Grading Record
2024 · Surging Sparks
Condition Profile
RBH Grading Standard
Centering
9.0
Corners
9.5
Edges
9.5
Surface
10.0
Supporting Documentation
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Released Grading Record
Border mode calculates centering and yaw from the recorded corner-border measurements. Landmark mode calculates LR/TB from direct design-landmark distances and records yaw independently when a reliable horizontal or vertical reference is available.
Dimensional measurements are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty. Clockwise yaw is positive (+); counterclockwise yaw is negative (−). “Not measured” means no reliable yaw reference was available.
Method
Border
Left / Right
56.0 / 44.0
Top / Bottom
54.1 / 45.9
Yaw
+0.08° CW
Corner Readings · Millimeters
Top Left
X 2.80 · Y 2.60
Top Right
X 2.10 · Y 2.70
Bottom Left
X 2.80 · Y 2.30
Bottom Right
X 2.30 · Y 2.20
Method
Border
Left / Right
44.0 / 56.0
Top / Bottom
55.4 / 44.6
Yaw
+0.01° CW
Corner Readings · Millimeters
Top Left
X 2.70 · Y 3.80
Top Right
X 3.50 · Y 3.90
Bottom Left
X 2.80 · Y 3.10
Bottom Right
X 3.50 · Y 3.10
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Documented corner, edge, and surface conditions associated with this grade.
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
3 Blemishes
Blemish 01 · Surface
Rear · D2
Trace Micro-scratchBlemish 02 · Edge
Rear · Top
Isolated Touch / TickBlemish 03 · Corner
Rear · Top Right
Isolated Touch / TickCertified
September 20, 2026
Record Revision
1
This digital record is tied to the exact eight-digit certification number printed on the RBH label. RBH does not expose customer information, grader notes, or private scoring weights in the public registry.