The Silmarillion

Thereafter Melian spoke to none save to Mablung only, bidding him take heed to the Silmaril, and to send word speedily to Beren and Lúthien in Ossiriand; and she vanished out of Middle-earth, and passed to the land of the Valar beyond the western sea, to muse upon her sorrows in the gardens of Lórien, whence she came, and this tale speaks of her no more.

Thus it was that the host of the Naugrim crossing over Aros passed unhindered into the woods of Doriath; and none withstood them, for they were many and fierce, and the captains of the Grey-elves were cast into doubt and despair, and went hither and thither purposeless. But the Dwarves held on their way, and passed over the great bridge, and entered into Menegroth; and there befell a thing most grievous among the sorrowful deeds of the Elder Days. For there was battle in the Thousand Caves, and many Elves and Dwarves were slain; and it has not been forgotten. But the Dwarves were victorious, and the halls of Thingol were ransacked and plundered. There fell Mablung of the Heavy Hand before the doors of the treasury wherein lay the Nauglamír; and the Silmaril was taken.

At that time Beren and Lúthien yet dwelt in Tol Galen, the Green Isle, in the River Adurant, southernmost of the streams that falling from Ered Lindon flowed down to join with Gelion; and their son Dior Eluchíl had to wife Nimloth, kinswoman of Celeborn, prince of Doriath, who was wedded to the Lady Galadriel. The sons of Dior and Nimloth were Eluréd and Elurín; and a daughter also was born to them, and she was named Elwing, which is Star-spray, for she was born on a night of stars, whose light glittered in the spray of the waterfall of Lanthir Lamath beside her father's house.

Now word went swiftly among the Elves of Ossiriand that a great host of Dwarves bearing gear of war had come down out of the mountains and passed over Gelion at the Ford of Stones. These tidings came soon to Beren and Lúthien; and in that time also a messenger came to them out of Doriath telling of what had befallen there. Then Beren arose and left Tol Galen, and summoning to him Dior his son they went north to the River Ascar; and with them went many of the Green-elves of Ossiriand.

Thus it came to .pass that when the Dwarves of Nogrod, returning from Menegroth with diminished host, came again to Sarn Athrad, they were assailed by unseen enemies; for as they climbed up Gelion's banks burdened with the spoils of Doriath, suddenly all the woods were filled with the sound of elven-horns, and shafts sped upon them from every side. There very many of the Dwarves were slain in the first onset; but some escaping from the ambush held together, and fled eastwards towards the mountains. And as they climbed the long slopes beneath Mount Dolmed there came forth the Shepherds of the Trees, and they drove the Dwarves into the shadowy woods of Ered Lindon: whence, it is said, came never one to climb the high passes that led to their homes.

In that battle by Sarn Athrad Beren fought his last fight, and himself slew the Lord of Nogrod, and wrested from him the Necklace of the Dwarves; but he dying laid his curse upon all the treasure. Then Beren gazed in wonder on the selfsame jewel of Fëanor that he had cut from Morgoth's iron crown, now shining set amid gold and gems by the cu

Now Dior Thingol's heir bade farewell to Beren and Lúthien, and departing from Lanthir Lamath with Nimloth his wife he came to Menegroth, and abode there; and with them went their young sons Eluréd and Elurín, and Elwing their daughter. Then the Sindar received them with joy, and they arose from the darkness of their grief for fallen kin and King and for the departure of Melian; and Dior Eluchíl set himself to raise anew the glory of the kingdom of Doriath.

There came a night of autumn, and when it grew late, one came and smote upon the doors of Menegroth, demanding admittance to the King. He was a lord of the Green-elves hastening from Ossiriand, and the door-wards brought him to where Dior sat alone in his chamber; and there in silence he gave to the King a coffer, and took his leave. But in that coffer lay the Necklace of the Dwarves, wherein was set the Silmaril; and Dior looking upon it knew it for a sign that Beren Erchamion and Lúthien Tinúviel had died indeed, and gone where go the race of Men to a fate beyond the world.

Long did Dior gaze upon the Silmaril, which his father and mother had brought beyond hope out of the terror of Morgoth; and his grief was great that death had come upon them so soon. But the wise have said that the Silmaril hastened their end; for the flame of the beauty of Lúthien as she wore it was too bright for mortal lands.

Then Dior arose, and about his neck he clasped the Nauglamír; and now he appeared as the fairest of all the children of the world, of threefold race: of the Edain, and of the Eldar, and of the Maiar of the Blessed Realm.

But now the rumour ran among the scattered Elves of Beleriand that Dior Thingol's heir wore the Nauglamír, and they said: 'A Silmaril of Fëanor burns again in the woods of Doriath'; and the oath of the sons of Fëanor was waked again from sleep. For while Lúthien wore the Necklace of the Dwarves no Elf would dare to assail her; but now hearing of the renewal of Doriath and of Dior's pride the seven gathered again from wandering, and they sent to him to claim their own.

But Dior returned no answer to the sons of Fëanor; and Celegorm stirred up his brothers to prepare an assault upon Doriath. They came at unawares in the middle of winter, and fought with Dior in the Thousand Caves; and so befell the second slaying of Elf by Elf. There fell Celegorm by Dior's hand, and there fell Curufin, and dark Caranthir; but Dior was slain also, and Nimloth his wife, and the cruel servants of Celegorm seized his young sons and left them to starve in the forest. Of this Maedhros indeed repented, and sought for them long in the woods of Doriath; but his search was unavailing, and of the fate of Eluréd and Elurín no tale tells.

Thus Doriath was destroyed, and never rose again.

But the sons of Fëanor gained not what they sought; for a remnant of the people fled before them, and with them was Elwing Dior's daughter, and they escaped, and bearing with them the Silmaril they came in time to the mouths of the River Sirion by the sea.