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): 16.4
Min PZC read (of all measurements): 15.3
Max PZC average on one log: 15.8
Min PZC average on one log: 15.8
PZC Average of all logs: 15.8

Species: vatairea spp.
Family: Fabaceae
Clade: Angiospermae
Description: Vatairea species are trees or shrubs in the legume family (Fabaceae) with pinnately compound leaves, pea-like flowers, and distinctive, often winged, indehiscent pods.
Other Local Names: Angelim amargoso, Aracui, Aracuy, Fava amarela, Faveira amarela, Faveira amargosa, Faveira bolacha, Guerra, Maqui, Faveira amargosa, Arisauro, Bastard purpleheart, Bauwaua, Inkassa, Yongo, Amargo, Amargo, Mari-mari, Marupa del bajo, Arisoeroe, Gele kabbes, Geli-kabissi

Reference Colour: Yellow brown
Texture: Coarse
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Bright yellow when freshly sawn, becoming yellow brown to dark brown or red brown.

Diameter: 60÷90cm
Density @12% MC: 750kg/m³
Janka Hardness: 1680lbf
Crushing Strength @12%MC: 58MPa
Static Bending Strength @12%MC: 110MPa
Longitudinal Modulus of Elasticity E: 19.5GPa
Volumetric Shrinkage Coefficient: 0.51% per %
Total Tangential Shrinkage TS: 7.8%
Total Radial Shrinkage TS: 4.5%
T/R Anisotropy Ratio: 1.7-
Fibre Saturation Point: 23%
Thermal Conductivity: 0.25W/mk
Lower Heating Value: 18050KJ/Kg
Sapwood Thickness: 4÷7cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 3 – moderately durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class M – moderately durable FAVA AMARGOSA Cross sections of Vatairea paraensis
Treatability: Class – 3-4 – poorly or not permeable
Use Class Covered by Natural Durability: Class 2 – inside or under cover (dampness possible)

Log Buoyancy: Does not float
Log Conservation: Moderate (treatment recommended)
Drying Rate: Rapid to normal
Drying Risk of Distortion: Slight risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: No risk or very slight risk

Blunting Effect: Fairly high
Sawing Tooth: Stellite-tipped
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Good
Sawing Machining Notes: Sawdust may cause allergies.
Assembly Nailing Screwing: Good but pre-boring necessary
Additional Notes: It is recommended to prepare surfaces and apply an undercoat, such as filling, before, finishing as this species contains anti, siccatives
End Uses: Heavy carpentry, Interior joinery, Formwork, Blockboard, Cabinetry (high-end furniture), Flooring, Stairs (inside), Industrial or heavy flooring, Panelling, Sliced veneer, Exterior joinery

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