[a] Diamond entered Lloyd's Register in 1800 with Anderson, master, Beatson, owner, and trade London-Halifax.

[1] The French privateer Grand Décidé captured "The Diamond Transport, from Halifax to Portsmouth" around end-October 1800.

[13] As Diamond was returning from Havana on 9 August she encountered the French privateer Bellona,[14] which took her captive.

[3] Captain Mark Munro (or Monro) received a letter of marque on 31 August 1804,[6] and sailed her from Britain on 17 September 1804 with destination Isle of Desolation.

[18] On 10 November, the French privateer Napoléon[19] captured Diamond in the Mozambique Channel,[20] after a three-day chase.

[20] The capture occurred off Cape Agulhas as Hercules was returning to England from Bombay, and Napoléon sent her into Port Louis.

[22][c] In November 1805, Napoléon brought the prisoners from Hercules and from Diamond into the Cape Colony, then in Dutch hands.

[22] An ambiguous report has "The Napoleon, prize of the Diamant, consignees of the Lenouvelle brothers, three masted vessel, of about 400 tons, copper-lined, to be sold 5 April [1806] by notary Guérin.

She arrived in Quiberon Bay in the evening of 21 January 1809 and ran into the British blockade; a frigate gave chase, but Potier managed to escape by throwing his artillery overboard.