Flawless titanium ring are 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.
You wouldnt believe all the ideal cut diamond that fall out of mountings while working in the yard or doing dishes.
The depression of the 1930s hit the engagement rings 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.