Algum

1 Kings 10:11-12

The navy also of Hiram brought from Ophir gold and a great plenty of almug (algum) wood and precious stones.Of the almug wood the king made pillars for the house of the Lord and for the king's house, and lyres also and harps for the singers. No such almug wood came again or has been seen to this day.

2 Chronicles 2:8; 9:10-11

Send me also from Lebanon cedar, cypress, and algum timber, for I know your servants can skillfully cut timber in Lebanon; and my servants will be with your servants...
The servants of Huram and [those] of Solomon, who brought gold from Ophir, also brought algum trees and precious stones. The king made of the algum trees terraces or walks to the house of the Lord and to the king's palace, and lyres and harps for the singers; none such had ever been seen before in the land of Judah.

It was used, together with cedar and pine, in the construction of Solomon's Temple including the crafting of musical instruments for use in the Temple. Likely the wood was brought by the ships of Tarshish, sent from the Red Sea port of Ezion-Giber, from the distant country of Ophir, and was very valuable.

The botanical identity of algum is not known for certain, though some references suggest it may be juniper (Juniperus). Several species of juniper occur in the Middle East region, including Juniperus excelsa (Greek Juniper), Juniperus foetidissima (Stinking Juniper), Juniperus phoenicea (Phoenician Juniper), and Juniperus drupacea (Syrian Juniper).

Picture shown is Greek Juniper