The United States of America: A Cornerstone of the World Gem Diamond Industry In the 20th Century
Bibliographic record
Abstract
Throughout the 20th century, the United States has been the primary consumer of gem-quality diamonds. From the early 1900s to 1975, it consumed at least 50% of the world's diamond supply by both weight and value; from the late 1970s to 1999, its proportion of world consumption varied from about 40-67% by weight and about 28-48% by retail jewellery value, Japan is the only other country to qualify as a major consumer of gem diamonds in the 20th century and this has occurred only since 1972. As we enter the 21st century, gem diamond consumption continues its historic pattern of extreme reliance on the buying habits of one nation, i.e., the United States. Resume Durant tout le 20e siecle, les Etats-Unis d'Amerique ont ete le premier consommateur de diamant de joaillerie. De 1900 a 1975, ce pays a utilise au moins 50 % de la production mondiale, tant en poids qu'en valeur; de 1970 a 1999, sa part de la consommation mondiale de bijou a fluctuee de 40 a 67 % en poids, et de 28 a 48 % en valeur au detail. Le Japon est le seul autre pays qui peut etre qualifie de consommateur important de diamant de joaillerie au 20' siecle, mais seulement depuis 1972. Depuis le debut du 21 e siecle, la consommation de diamant de joaillerie continue d'afficher un profil historique d'extreme dependance des habitudes de consommation d'un unique pays, i.e., les Etats-Unis d'Amerique.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".