Chrome Diopside and White Topaz 3.4ctw Pendant with Chain in Sterling Silver Metal:Sterling Silver,1.53 gram. Gemstones:3.27ctw Chrome Diopside,0.13ctw White Topaz. Dimension: 11.37mm W,20.93mm H . Natural green chrome diopside symbolizes the vast grassland,pure lucky bird setting by nature white topaz.It ingeniously expresses the harmonious beauty of the animal and the nature. Chrome Diopside, Russia"s coveted "Siberian treasure," was discovered in the latter part of the 21st century in the remote and frigid Ural Mountains. Only accessible to miners during the summer months, this single-source gemstone is not only rare but also possesses all natural beauty as no enhancement treatment is needed. Topaz is one of the twelve breastplate stones of the High Priest referred to in the Book of Exodus. The breastplate stones are considered sacred to twelve mighty angels who guard the gates to Paradise.Silver Topaz is colorless and untreated. Silver Topaz is also called "white topaz".