The depression of the 1930s hit the diamond stud trade hard. The cutting shops were sometimes shut down completely for several weeks at a time. The situation remained difficult until the outbreak of the Second World War.
a flawless wedding bands is no more beautiful to the unaided human eye than a grade in the middle of the scale. Once again, extremely subtle differences in clarity are very important to determine rarity, but only affect beauty when in the very low end of the scale.
The diamond store, now more attractive, is also now worth more. At present, we have the ability to produce man-made diamonds of fine quality.