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: 11
Number of individual trees analyzed: 12
Number of specimens: 39
Number of measurements: 120
Max PZC read (of all measurements): 16.7
Min PZC read (of all measurements): 6.8
Max PZC average on one log: 13.7
Min PZC average on one log: 8.2
PZC Average of all logs: 10.8

Species: larix spp.
Family: Pinaceae
Clade: Gymnospermae
Description: Larix spp. (Larch) are deciduous conifers, unique for shedding their soft, bright green needles (arranged in clusters) each autumn after turning golden. They produce small, woody cones and typically grow into tall, conical trees with furrowed bark.
Other Local Names: Larche, Alerce, Mélèze, Larice, Larch

Reference Colour: Pinkish brown
Texture: Medium
Grain: Straight
Interlocked Grain: Absent
Notes: Heartwood is pinkish brown, with reddish brown veins. The grain is usually straight but might be oblique (twisted logs).

Diameter: 40÷70cm
Density @12% MC: 600kg/m³
Janka Hardness: 1140lbf
Crushing Strength @12%MC: 52MPa
Static Bending Strength @12%MC: 90MPa
Longitudinal Modulus of Elasticity E: 11.8GPa
Volumetric Shrinkage Coefficient: 0.48% per %
Total Tangential Shrinkage TS: 8.2%
Total Radial Shrinkage TS: 4.2%
T/R Anisotropy Ratio: 2-
Fibre Saturation Point: 26%
Thermal Conductivity: 0.2W/mk
Lower Heating Value: 16360KJ/Kg
Sapwood Thickness: 1÷3cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 3-4 – moderately to poorly durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class S – susceptible
Treatability: Class 4 – non-treatable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside Atlas of Tropical Timber Species EUROPEAN LARCH
Durability Notes: This species is listed in the NF EN 350 standard. Use class 3 only covers wood components without sapwood. 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: Not applicable
Log Conservation: Good
Drying Rate: Normal
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: Slight risk

Blunting Effect: Normal
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Good
Sawing Machining Notes: Larch sawing is easy but clogging of saw blades due to resin must be taken into account.
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: Difficult gluing due to resin. Drying at above 70° C prevents this problem.
End Uses: Shingles, Interior joinery, Coffins, Built-in furniture or mobile item, Heavy carpentry, Flooring, Panelling, Sliced veneer, Glued Laminated, Exterior panelling, Exterior joinery, Cooperage

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