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: 4
Number of measurements: 18
Max PZC read (of all measurements): 27.2
Min PZC read (of all measurements): 18.0
Max PZC average on one log: 24.3
Min PZC average on one log: 19.5
PZC Average of all logs: 21.9

Species: dicorynia guianensis
Family: Fabaceae
Clade: Angiospermae
Description: A large tropical tree, up to 50m tall, with alternate pinnately compound leaves. It produces small flowers and distinctive, flat, winged, reddish-brown pods.
Other Local Names: Angelica, Angelica do para, Tapaiuna, Angélique, Barakaroeballi, Basralokus

Reference Colour: Brown
Texture: Medium
Grain: Straight
Interlocked Grain: Absent
Notes: Colour turns bronze brown or purplish brown with air. Sometimes, presence of internal stresses.

Diameter: 50÷90cm
Density @12% MC: 790kg/m³
Janka Hardness: 1710lbf
Crushing Strength @12%MC: 70MPa
Static Bending Strength @12%MC: 121MPa
Longitudinal Modulus of Elasticity E: 18.35GPa
Volumetric Shrinkage Coefficient: 0.55% per %
Total Tangential Shrinkage TS: 8.2%
Total Radial Shrinkage TS: 5.1%
T/R Anisotropy Ratio: 1.6-
Fibre Saturation Point: 29%
Thermal Conductivity: 0.26W/mk
Lower Heating Value: 19200KJ/Kg
Sapwood Thickness: 2÷10cm
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 M – moderately durable
Treatability: Class 4 – non-treatable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside BASRALOCUS
Durability Notes: This species is listed in the NF EN 350 standard. Resistance to decay: moderate to good depending on decay. This species does not cover the use class 4, but it naturally covers the use class 5 (wood permanently or regularly submerged in salt water, sea water or brackish water) owing to its high silica content and its high specific gravity. Resistance to termites ranges from moderately good to good. According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used.

Log Buoyancy: Does not float
Log Conservation: Moderate (treatment recommended)
Drying Rate: Normal to slow
Drying Risk of Distortion: Slight risk
Drying Risk of Case Hardening: Yes
Drying Risk of Checking: Slight risk

Blunting Effect: High
Sawing Tooth: Stellite-tipped
Machining Tool: Tungsten carbide
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Must be sawn green in order to reduce blunting effect. Sawing requires power and a cutting angle of 20° is recommended.
Assembly Nailing Screwing: Good but pre-boring necessary
Additional Notes: Resistant to one or several acids
End Uses: Turned goods, Built-in furniture or mobile item, Heavy carpentry, Flooring, Ship building (planking and deck), Industrial or heavy flooring, Cabinetry (high-end furniture), Sliced veneer, Stairs (inside), Bridges (parts not in contact with water, Veneer for back or face of plywood or ground), Vehicle or container flooring, Sculpture, Panelling, Cooperage, Exterior joinery, Hydraulic works (seawater), Interior joinery

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