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: 2
Number of individual trees analyzed: 2
Number of specimens: 3
Number of measurements: 12
Max PZC read (of all measurements): 10.7
Min PZC read (of all measurements): 8.3
Max PZC average on one log: 9.9
Min PZC average on one log: 9.0
PZC Average of all logs: 9.4

Species: irvingia spp
Family: Irvingiaceae
Clade: Angiospermae
Description: Irvingia spp. are medium to large evergreen trees native to tropical Africa, known for their simple, leathery leaves and small flowers. They produce edible, mango-like drupes containing a large, woody seed (dika nut) whose oil-rich kernel is highly valued for food, especially as a soup thickener.
Other Local Names: Bwiba bambale, Ntwa, Pékié, Unyom, Eniok, Boborou, Ogwe, Oro, Ebi

Reference Colour: Brown
Texture: Medium
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Sapwood yellow with red stripes. Heartwood pale green-brown or orange-yellow, can fade to grey-brown.

Diameter: 60÷100cm
Density @12% MC: 930kg/m³
Janka Hardness: 2040lbf
Crushing Strength @12%MC: 76MPa
Static Bending Strength @12%MC: 140MPa
Longitudinal Modulus of Elasticity E: 25.06GPa
Volumetric Shrinkage Coefficient: 0.63% per %
Total Tangential Shrinkage TS: 11.2%
Total Radial Shrinkage TS: 6.6%
T/R Anisotropy Ratio: 1.7-
Fibre Saturation Point: 28%
Thermal Conductivity: 0.3W/mk
Sapwood Demarcation: Not clearly demarcated

Resistance to Decay: Class 2 – durable
Resistance to Dry Wood Borers: Class S – susceptible (risk in all the wood)
Resistance to Termites: Class M – moderately durable
Treatability: Class – 3-4 – poorly or not permeable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside ANDOK

Log Buoyancy: Does not float
Log Conservation: Good
Drying Rate: Slow
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: High risk

Blunting Effect: Fairly high
Sawing Tooth: Stellite-tipped
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Not recommended or without interest
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: High specific gravity: important that gluing be performed in compliance with the code of practice and instructions for the glue used.
Additional Notes: Not present on the international market but widely used for a large range of everyday, objects
End Uses: Turned goods, Interior joinery, Shipbuilding, House framing, Vehicle or container flooring, Flooring, Tool handles (resilient woods), Industrial or heavy flooring, Exterior joinery, Decking

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