Tuesday, July 5, 2016

Smithsonian Gemstones

The Blue Heart Diamond was donated by Mrs. Marjorie Merriweather Post in 1964.

Platinum bracelet with 31 antique-cut Burmese rubies totaling 60 carats.

The DeYoung pink diamond

The Chalk Emerald ranks among the world’s finest Colombian emeralds. The 37.8-carat emerald exhibits the prized velvety deep green colour.

The 98.57-carat Bismarck Sapphire is mounted in a platinum necklace designed by Cartier, set with 312 baguette and round brilliant cut diamonds and accented with 8 square-cut sapphires.

Ring features an emerald-cut diamond of 5.32cts with a step-cut blue sapphire of 8.12cts.

Heart-shaped brooch has a 96-carat amethyst surrounded by diamonds.

The Hall Sapphire Necklace, designed by Harry Winston, Inc., features 36 cushion-cut sapphires from Sri Lanka, totaling 195 carats, set in platinum accented by 435 pear-shaped and round brilliant-cut diamonds, totaling 83.75 carats.

These two large, pear-shaped diamonds weigh 14.25 and 20.34 carats respectively are set in earrings that belonged to Marie Antoinette, the Queen of France who was guillotined in 1793 during the French Revolution.

Elbaite candelabra (Tourmaline family)

Liddicoatite with a zoned green and pink interior from Antsirabe, Madagascar

Beryl with Quartz - Blue beryl crystal on microcline.

Pear-cut ametrine from Brazil

Uncut diamond crystal from Arkansas

Calcite with Pyrite - From Brush Creek mine, Reynolds County, Missouri.

The 58.19-carat Maharani Cat’s Eye from Sri Lanka is one of the finest gems of its kind

Octagonal-cut amethyst

A round brilliant-cut citrine.

Clinohumite is a magnesium silicate

Orthoclase belongs to the feldspar family.