Natural Diamond Crystals

Diamond Crystals.

Photo: E. Skalwold

13 Natural Diamond Crystals from 3.18 to 0.05 cts.
Benjamin Silliman, Jr. (1816 1885) Collection, Cornell University (original label)
Professor of Chemistry, Yale University
Curator of Yale's mineral collection
following his brother-in-law, James Dwight Dana and his father,
Benjamin Silliman, Sr. (for whom sillimanite is named).
(The first official mineral curator at the Peabody was George Jarvis Brush in 1866).




Diamond Crystals.

Photo: E. Skalwold

Carat Weights



Diamond Crystals.

Photo: E. Skalwold

View with UVLW pen light.
Most of what is seen here is just reflection from the light.
The largest xtl actually fluoresces moderate yellow; green xtl: weak green; frosted white and pink xtls:
strong bluish white and small xtl in right front and two in left rear: weak yellow. All others: inert.




Diamond Crystals.

Photo: E. Skalwold

The 5 Larger Crystals
Left to Right
Back: 3.18 ct and 0.58 ct
Front: 0.24 ct, 0.63 ct and 0.30 ct


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