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): 20.1
Min PZC read (of all measurements): 15.8
Max PZC average on one log: 17.9
Min PZC average on one log: 17.9
PZC Average of all logs: 17.9

Species: dillenia spp.
Family: Dilleniaceae
Clade: Angiospermae
Description: Tropical trees or shrubs, often with large, simple leaves featuring prominent parallel venation. They bear showy yellow or white flowers with numerous stamens, developing into large, often fleshy and edible fruits.
Other Local Names: Simpur jangkang, Zinbyun, Dillenia

Reference Colour: Red brown
Texture: Medium
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Sapwood light yellowish brown to reddish brown. Heartwood reddish brown with a violet tinge, darkens to chocolate brown. Decorative silver figure on quartersawn faces. Silica deposits.

Diameter: 80÷120cm
Density @12% MC: 710kg/m³
Janka Hardness: 1260lbf
Crushing Strength @12%MC: 39MPa
Static Bending Strength @12%MC: 71MPa
Longitudinal Modulus of Elasticity E: 17.7GPa
Volumetric Shrinkage Coefficient: 0.46% per %
Total Tangential Shrinkage TS: 7.6%
Total Radial Shrinkage TS: 4.4%
T/R Anisotropy Ratio: 1.7-
Fibre Saturation Point: 27%
Thermal Conductivity: 0.24W/mk
Sapwood Thickness: 3÷5cm
Sapwood Demarcation: 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 1 – 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
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
Machining Tool: Tungsten carbide
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Important dulling effect due to high silica content.
Assembly Nailing Screwing: Good but pre-boring necessary
Additional Notes: Filling is needed. Substitute for Cedro
End Uses: Framing, Interior joinery, Stairs (inside), Moulding, Veneer for back or face of plywood, Blockboard, Veneer for interior of plywood, Flooring, Panelling, Sliced veneer

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