Chrysoprase Sphere Value Guide

This polished Chrysoprase Sphere, originating from Australia between 1950 and 2000, showcases the most sought-after apple-green variety of cryptocrystalline silica. Its collectible appeal lies in its historical significance dating back to ancient Rome and its flawless spherical geometry which highlights the stone's natural translucency.

What affects the value of Chrysoprase Sphere?

• Intensity and uniformity of the green hue, with 'apple-green' being the most valuable.
• Clarity and degree of translucency when held against a direct light source.
• Precision of the spherical cut and the absence of surface pits or fractures.
• The overall diameter and weight of the specimen, as larger spheres are increasingly rare.

How to Identify Chrysoprase Sphere?

• Look for the signature vibrant apple-green color characteristic of high-quality Australian deposits.
• Inspect for a waxy to vitreous luster that is typical of authentic cryptocrystalline silica.
• Verify the presence of minor nickel-induced inclusions which distinguish natural chrysoprase from dyed green chalcedony.
• Check for a consistent, high-polish finish across the entire surface of the sphere.

History of Chrysoprase Sphere

Chrysoprase, a cryptocrystalline variety of silica, has been valued since antiquity. The ancient Greeks, Romans, and Egyptians used chrysoprase in seals, signets, and other ornamental objects. Its appealing green hue has made it a popular choice for jewelry and decorative items throughout history.