Rare Boulder Opal Silver Pendant from Australia - 0.6" - 1.74 Grams minerals Great sample of Sphalerite from

Great sample of Sphalerite from a mine that was shut down in 1989

Average Strand Weight: 26

They measures around 8mm in diameter

This quartz was renamed hollandite in honour of Sir Thomas Henry Holland (1868-1947)

9 inches) in diameter

Rare Boulder Opal Silver Pendant from Australia - 0.6" - 1.74 Grams minerals Great sample of Sphalerite fromThis is a fantastic and extremely rare Boulder Opal pendant from Australia in sterling silver. 2% of Australian opal is the second (after Black Opal) most prized form of opal, a unique form known as boulder opal. The opal usually forms as thin veins within these boulders, and most stones are cut to include some of the host ironstone matrix. Boulder opal is sometimes referred to as opal in matrix for this reason. Location: Western Queensland, Australia