This is an interesting 3D with a British touch, and it's a luck that Kino Lorber and the 3D Film Archive have jointly taken the task of restoring it. As explained in the extras, it was shot in 3D but never released that way in its time, as the 3D trend had declined. So now we can enjoy watching it as it was intended to be screened.

The story, whether 3D or normal viewing, is interesting enough. A federal agent joins forces with a British Scotland Yard colleague to catch a band of synthetic-diamond makers and rescue the scientist who has joined them. Both agents also doubt if the scientist's daughter is willing to help or only trying to fool them. Contrasting with Philip Friend who effectively plays his less emotional British counterpart, Dennis O'Keefe adds the spark to the pair; he does not only act but also directed this picture, and both jobs he does well.

Not only the polarized version is great, also the anaglyphic one (complimentary glasses are included) offers a nice medium-depth effect. The image is sharp if a little grained, and compared to the unrestored version (both shown side-by-side in the extras as usually) contrast is improved - good for the restoration team. The 3D effect is much more apparent with the polarized glasses, though.

A sample of the anaglyphic version can be watched at Youtube (see External Links section).

An otherwise very British style picture with sober acting, no over-use of 3D visual tricks, more documentary-style than American productions yet with a well balanced amount of action.

So good that they have restored it. Another treat for 3D affectionates. More 3D classics coming, please!

Likable actor Dennis O'Keefe made a couple of films in England in the '50s. "The Diamond Wizard" from 1954 is his baby all the way - he wrote the original story using a pseudonym (Jonathan Rix), he directed it, and he starred in it.

O'Keefe plays Joe Dennison, a Treasury Dept. investigator in England trying to find a gang who stole a million dollars from a treasury vault and also killed his partner. One of the criminals apparently is in England to buy fake diamonds, though they realize he must be coming by ship because he as of yet isn't in England.

The Scotland Yard inspector, McClaren, is working with Dennison on the case while also searching for Dr. Eric Miller, an atomic scientist who has disappeared. His daughter, who came to England to join her father, has a broach with phony diamonds, made by her father. So is he somehow involved with the thieves? This isn't a very interesting film until the end, where the location is an incredible castle. The whole end moves at a great pace, is suspenseful and atmospheric. I wish the whole movie had been that way. It's odd in the way it starts out as somewhat light, with both men competing for the missing man daughter's affections, and then has this big ending. Both lead actors, O'Keefe and Philip Friend (the inspector) are very charming.

The story is derivative, but I love the idea of the phony diamonds -- there are so many of these today, and they even mention Moissan, whose product, Moissanite is available (and expensive) today.

IMDb Trivia: One of the "75 Most Wanted" films listed by the British Film Institute as "Missing, believed lost".

I saw this film on Netflix, so apparently it is NOT lost--at least not any more.

Dennis O'Keefe plays a Treasury Department agent who has been sent to Britain. This is because there may be an organization that has learned to produce perfect diamonds--ones that are so perfect it could destroy the market. The trail leads to a scientist--a scientist who has disappeared. Although the chances are ridiculous, the wanted man's daughter just happens to be a lady that the Treasury man was dating! He's afraid to tell her about everyone's suspicions about her father and he and Scotland Yard are baffled.

This is a decent British version of film noir. While it's not quite as dark as many films in the genre, it is tough and violent and enjoyable. However, it does start off very slowly--so keep watching and don't give up on this one--it's worth it.

If you do watch a couple things you should note. First, at one point in the film they talk about a remarkable fake diamond being produced in 1924. While it was believed in 1954 that this was true, apparently this was a hoax and that part isn't mentioned in the film. Second, when O'Keefe is chased by a truck he's knocked onto the cobblestones. Watch closely--these cobblestones bounce--revealing they are clearly props.