Henry Heliolite Herbert Hyacinth Horace Harlequin opal Hubert Heliotrope Hugh Heliodor Humphrey Hypersthene James Jade Jasper Jasper Jerome Jadeite John Jacinth Joseph Jargoon Julius Jet Lambert Labradorite Lawrence Lapis-lazuli Leo Lepidolite Leonard Loadstone Mark Malachite Matthew Moonstone Maurice Moss-agate Michael Microcline Nathan Natrolite Nicholas Nephrite Oliver Onyx Osborne Orthoclase Osmond Opal Oswald Obsidian Patrick Pyrope Paul Pearl Peter Porphyry Philip Prase Ralph Rubellite Raymond Rose-quartz Richard Rutile Robert Rock-crystal Roger Rhodonite Roland Ruby Stephen Sapphire Theodore Tourmaline Thomas Topaz Valentine Vesuvianite Vincent Verd-antique Walter Wood-opal William Willemite III On the Talismanic Use of Special Stones[36] Agate The author of “Lithica” celebrates the merits of the agate in the following lines:[37] Adorned with this, thou woman’s heart shall gain, And by persuasion thy desire obtain; And if of men thou aught demand, shalt come With all thy wish fulfilled rejoicing home. This idea is elaborated by Marbodus, Bishop of Rennes, in the eleventh century, who declares that agates make the wearers agreeable and persuasive and also give them the favor of God.[38] Still other virtues are recounted by Camillo Leonardo, who claims that these stones give victory and strength to their owners and avert tempests and lightning.[39] The agate possessed some wonderful virtues, for its wearer was guarded from all dangers, was enabled to vanquish all terrestrial obstacles and was endowed with a bold heart; this latter prerogative was presumably the secret of his success. Some of these wonder-working agates were black with white veins, while others again were entirely white.[40]