7.5ct Blue Chaff Australian Koroit Boulder Opal Teardrop Cabochon

Description

View 7.5ct Blue Chaff Australian Koroit Boulder Opal Teardrop Cabochon with current marketplace pricing, condition, product images and item details. Koroit boulder opal is a highly sought-after, distinctive, and vibran opal type mined in the Koroit opal field in Southwest Queensland, Australia. Renowned for its deep brown ironstone matrix adorned with brilliant, swirling veins and lightning streaks of color that often featuring electric green, blue, purple, and orange. Koroit boulder opal is a highly sought-after, distinctive, and vibran opal type mined in the Koroit opal field in Southwest Queensland, Australia. Renowned for its deep brown ironstone matrix adorned with brilliant, swirling veins and lightning streaks of color that often featuring electric green, blue, purple, and orange. On top of that, it will often have colorful potch or precious opal in one-of-a-kind chaotic mosaic, webbed or stained glass patterns. Type: Koroit Boulder Opal  Size: 18x12.5x3.8mm Weight: 7.5ct Brightness: B4 Condition: New without tags. Category: Jewelry & Watches › Loose Diamonds & Gemstones › Loose Gemstones.

Gemstone Color

Bi-Color/Multicolor

Gemstone Type

Boulder Opal

Number of Pieces

1

Cut Grade

Excellent

Gemstone Effect

Opalescence

Item Length

18 mm

Materials sourced from

Australia

Gemstone Shape

Cabochon

Item Depth

3.8 mm

Gemstone Creation

Natural

Gemstone Treatment

Not Enhanced

Gemstone Form

Polished

Country of Origin

United States

Item Width

12.5 mm