10. The Luxembourg Brooch with Epaulettes
Donn by: Maria Teresa, Grand Duchess
Been in possession since the 1800s
Value Estimate: Not Known
For those unfamiliar with ceremonial jewelry, epaulets are a type of decorative shoulder adornment that showcases an individual's emblem. Though this particular style went out of style in the early 1800s, the Diamond Epaulet Brooch—which is frequently seen on the Grand Duchess Maria Teresa—has withstood the test of time.

The Epaulette Brooch from Luxembourg @desireedb/PinterestThe Royal Family owns several brooches, one of which is part of the Luxembourg Grand Ducal Jewels. Another piece of diamond jewelry that is frequently seen is the Nassau Diamond Rose Brooches. Similar to the Diamond Epaulet Brooch, this trio of diamond brooches dates from the nineteenth century.