Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 1
Number of individual trees analyzed: 1
Number of specimens: 2
Number of measurements: 6
Max PZC read (of all measurements): 19.1
Min PZC read (of all measurements): 15.7
Max PZC average on one log: 17.5
Min PZC average on one log: 17.5
PZC Average of all logs: 17.5

Species: aphanocalyx heitzii
Family: Fabaceae
Clade: Angiospermae
Description: Aphanocalyx heitzii, commonly known as Bolivian Sunset, is a compact Gesneriad admired for its velvety green foliage and profusion of vibrant orange-red, trumpet-shaped flowers with a distinctive “pursed” or “kissing” mouth.
Other Local Names: Ékop-mayo, Zoélé, N’douma, N’douma, Andjung, Ekop

Reference Colour: Pinkish brown
Texture: Medium
Grain: Interlocked grain
Interlocked Grain: Marked
Notes: Pink brown to red brown. Possible wind shakes (internal fractures in wood).

Diameter: 80÷100cm
Density @12% MC: 590kg/m³
Janka Hardness: 900lbf
Crushing Strength @12%MC: 48MPa
Static Bending Strength @12%MC: 90MPa
Longitudinal Modulus of Elasticity E: 14.01GPa
Volumetric Shrinkage Coefficient: 0.46% per %
Total Tangential Shrinkage TS: 7.4%
Total Radial Shrinkage TS: 4%
T/R Anisotropy Ratio: 1.9-
Fibre Saturation Point: 28%
Thermal Conductivity: 0.2W/mk
Lower Heating Value: 18740KJ/Kg
Sapwood Thickness: 5÷15cm
Sapwood Demarcation: Not clearly demarcated

Resistance to Decay: Class 5 – non-durable
Resistance to Dry Wood Borers: Class S – susceptible (risk in all the wood)
Resistance to Termites: Class S – susceptible
Treatability: Class 2 – moderately treatable.
Use Class Covered by Natural Durability: Class 1 – inside (no risk of dampness)

Log Buoyancy: Floats
Log Conservation: Low (treatment necessary)
Drying Rate: Normal to slow
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: Slight risk

Blunting Effect: Normal
Sawing Tooth: Ordinary or alloy steel
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Some difficulties in the presence of interlocked grain. Tendency to woolliness.
Assembly Nailing Screwing: Good
End Uses: Framing, Panelling, Formwork, Exterior joinery, Boxes and crates, Interior joinery, Stairs (inside), Built-in furniture or mobile item, Veneer for back or face of plywood, Flooring, Veneer for interior of plywood, Sliced veneer

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9