Roughbark Lignum Vitae
Scientific name: Guaiacum bijugum
Overview
Roughbark Lignum Vitae is one of the heaviest and hardest hardwoods native to the Caribbean region. Closely related to true Lignum Vitae (Guaiacum officinale), it shares many of the same extreme physical properties, including high density, natural oil content, and exceptional durability.
It has historically been used in marine environments and heavy mechanical applications due to its self-lubricating characteristics.
Quick Facts
- Common Name: Roughbark Lignum Vitae
- Scientific Name: Guaiacum bijugum
- Region: Caribbean & West Indies Hardwoods (Caribbean, Central America, and northern South America)
- Tree Size: 20–40 ft tall, 1–2 ft trunk diameter
- Average Dried Weight: 75 lbs/ft³ (1,200 kg/m³)
- Janka Hardness: 4,390 lbf
- Color: Greenish brown to dark brown, often with darker streaks
- Grain: Interlocked
- Texture: Fine
Identification Characteristics
Roughbark Lignum Vitae typically displays dark olive to deep greenish-brown heartwood that ages to rich brown tones. It is extremely heavy and often sinks in water. The grain is interlocked, and the texture is very fine and smooth, with a natural waxy feel due to oil content.
Key identification traits include:
- Olive-green to dark brown coloration
- Extremely high density
- Very fine texture
- Oily or waxy surface feel
- Often sinks in water
Working Properties
Roughbark Lignum Vitae is difficult to machine due to its density and natural oils.
- Requires sharp carbide tools
- Prone to burning during cutting
- Difficult to glue without surface prep
- Polishes exceptionally well
- Extremely resistant to wear
Safety Note
Dust may cause irritation. Natural oils can interfere with adhesive bonding.
Common Uses
Roughbark Lignum Vitae common uses including:
- Marine bearings
- Heavy-duty mallets
- Tool handles
- Industrial components
- Turned objects
Sustainability & Notes
Guaiacum sanctum is heavily regulated and protected in many regions. Commercial availability is extremely limited, and most material encountered today is reclaimed or very small stock.
Comparative Notes & Related Species
Lignum Vitae – (Guaiacum officinale) – Similar properties but often slightly different in coloration and distribution.
Ipe – Very dense but lacks the same oil content and green hue.
Osage Orange – Durable but significantly lighter and more yellow in tone.
Related Guides
Density & Hardness Explained (Janka Scale Guide)
Explains how Roughbark Lignum Vitae ranks among the hardest woods documented.
Building a Documented Wood Collection
Covers documentation of rare and regulated species.
How to Identify Exotic Hardwood by Weight & Grain
Helps differentiate heavy tropical hardwoods.
Compare Wood Properties
See how this species ranks in density and hardness using our Wood Density & Janka Hardness Chart. You can also explore Hardest Woods, Softest Woods, and Most Dense Woods for quick comparisons.
Collector Notes
Roughbark Lignum Vitae is rarely encountered in large boards due to conservation restrictions. Most collector specimens appear as small blanks or reclaimed industrial components. Verified origin and proper documentation are especially important due to regulatory controls.
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Wood Sample Collection
This species is part of an ongoing effort to document and preserve wood samples from around the world.
Learn more about contributing to the collection:
Resources
Authoritative botanical and forestry references used in compiling information about this species include:
• USDA Forest Service – Wood Handbook: Wood as an Engineering Material
https://www.fpl.fs.usda.gov/products/publications/
• The Wood Database – Global reference for wood identification, physical properties, and woodworking characteristics
https://www.wood-database.com/
• Royal Botanic Gardens, Kew – Plants of the World Online – Botanical taxonomy and species distribution database
https://powo.science.kew.org/
• International Union for Conservation of Nature (IUCN Red List) – Global conservation status assessments
https://www.iucnredlist.org/
• Convention on International Trade in Endangered Species (CITES) – International trade regulations for protected plant species
https://cites.org/
Additional forestry publications, academic research papers, and regional timber studies may also be referenced where available.
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Availability & Where to Buy
Exotic hardwood availability can vary significantly depending on region, sustainability regulations, and supplier inventory.
As this archive grows, recommended suppliers and specialty wood retailers will be listed here to help woodworkers locate responsibly sourced material.
Lumber Suppliers:
Availability varies — see the Where to Buy Exotic Woods page for current sources.
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