Lignum Vitae is the hardest, densest wood in the world specific gravity over 1.4. Black Ebony has a specific gravity from 1.0-1.3, both will sink in water. Ebony weighs about 70 pounds per cubic foot, and Lignum Vitae weighs over 85 pound per cubic foot
Lignum Vitae
Lignum vitae. It is a tropical hardwood.
Lignum Vitae is an very dense wood imported from Brazil. It can have a density as high as 1.39 g/cc.
All wood besides Lignum Vitae, Ipe/Brazilian Walnut/Lapacho, Cumaru/Brazilian Teak, Ebony, Brazilian Redwood/Paraju, Angelim Pedra, and Bloodwood are below 1 g/cm3.
Lignum Vitae or to give it its correct name Guaiacum officina'le is a hard wood tree native to the West Indies and warmer areas of North America.
The Jamaican National Flower is Lignum Vitae (Guiacum Officinale).
First things first: you probably don't have Lignum Vitae. It's an endangered species. There are three companies in the US that import this stuff and 100 percent of it goes to make bearings. There is another wood called Argentine Lignum Vitae, which you very well may have; it's not as hard as the real thing (which isn't saying much; real lignum vitae is harder than aluminum) but it's still incredibly hard, and vastly easier to get. And whether you have real or Argentine lignum vitae, gluing it is the same: clean off the surface oil with lacquer thinner, sand it with 220-grit paper, reclean it and glue it with epoxy.
Lignum Vitae is a heavy hard wood which varies in color from yellow brown to almost black.
It does not way anything. And if the word you wanted was weigh, the answer depends on the material: the density of wood varies hugely from species to species. For eaxmple, ebony or lignum vitae are more than eight times as dense as balsa.
Ebony. Species of ebony include Diospyros ebenum (Ceylon ebony), native to southern India and Sri Lanka; Diospyros crassiflora (Gabon ebony), native to western Africa; and Diospyros celebica (Makassar ebony), native to Indonesia and prized for its luxuriant, multi-colored wood grain. Mauritius ebony, Diospyros tesselaria, was largely exploited by the Dutch in the 17th century. Some species in the genus Diospyros yield an ebony with similar physical properties, but striped rather than evenly black (Diospyros ebenum).
It has a lower density than water (1000 kg/m3) However some wood like lignum vitae (See Link) have densities higher than water and sink.
It depends on the variety of the wood, whether is is seasoned and dry. From 170 kg per cubic metre for Balsa to 1370 kg per cubic metre for Lignum Vitae