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): 11.5
Min PZC read (of all measurements): 8.7
Max PZC average on one log: 10.3
Min PZC average on one log: 10.3
PZC Average of all logs: 10.3

Species: platonia insignis
Family: Clusiaceae
Clade: Angiospermae
Description: Platonia insignis, or Bacuri, is a large evergreen tree native to the Amazon rainforest, prized for its distinctive large, round, yellow-orange fruit with aromatic, sweet-tart white pulp.
Other Local Names: Bacuriuba, Bacuri-açu, Ubucari, Matazama, Mammea apple, Pakuri, Parcouri, Bacury, Goelhart, Pakoeli

Reference Colour: Yellow brown
Texture: Coarse
Grain: Straight
Interlocked Grain: Absent
Notes: Occasional ringshakes in logs.

Diameter: 60÷80cm
Density @12% MC: 850kg/m³
Janka Hardness: 1860lbf
Crushing Strength @12%MC: 73MPa
Static Bending Strength @12%MC: 147MPa
Longitudinal Modulus of Elasticity E: 22.61GPa
Volumetric Shrinkage Coefficient: 0.68% per %
Total Tangential Shrinkage TS: 10%
Total Radial Shrinkage TS: 5.4%
T/R Anisotropy Ratio: 1.9-
Fibre Saturation Point: 27%
Thermal Conductivity: 0.28W/mk
Lower Heating Value: 18830KJ/Kg
Sapwood Thickness: 3÷9cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 2 – durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class D – durable
Treatability: Class 3 – poorly treatable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside Notes. According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used. Atlas of Tropical Timber Species BACURI
Durability Notes: According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used. Atlas of Tropical Timber Species BACURI Cross sections of Platonia insignis

Log Buoyancy: Does not float
Log Conservation: Moderate (treatment recommended)
Drying Rate: Normal to 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: Good
Sawing Machining Notes: Silica content is variable.
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.
End Uses: Heavy carpentry, Interior joinery, Cabinetry (high-end furniture), Built-in furniture or mobile item, Stairs (inside), Flooring, Exterior joinery, Sliced veneer

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