Adorn your neckline with this natural 6x4mm oval Madagascar sphene, which exudes trichoic color shifting and an intense fire. Madagascar sphene is a gemstone with the stunning brilliance of a Diamond, the durability of tanzanite, and the color of a yellow-green chartreuse peridot. It is embellished with rounds of natural Cambodian white zircon, which surrounds the sphene and set in a frame of 3 grams of platinum and 3 grams of 18K gold that is highly polished over nickel free premium sterling silver. Cambodian white zircon is a natural gemstone. It is not cubic zirconia. When sphene is set with white zircon, which has a similarly high refractive index, a high luster and intense fire will result. Faceted, 6x4mm oval Madagascar sphene (14) Faceted, 1.3mm round Cambodian white zircon Compared to a Diamond, Madagascar sphene possesses a higher brilliance. It is one of the few gemstones with a dispersion higher than diamond. The dispersion of diamond is 0.044, while the dispersion of sphene is 0.051. Because of this high dispersion and refractive index, sphene can display stunning fire when light passes through it. A rare characteristic of sphene is birefringence (double reflection) meaning that light splits into two rays as it passes through the gem. In addition, it also displays pleochroism meaning it elicits different colors when viewed from different angles. This trichroic property makes this gemstone uniquely special. Sphene's high refractive index, dispersion and luster make it a stunning gemstone. However, it is a rare gemstone that is not often seen in jewelry. Handmade original design. This one of a kind piece is gone forever once it sells out. Be as unique as your jewelry. All Jewelry is shipped with a velvet Jewelry pouch and satin lined Jewelry box. **** If you are looking for a specific gemstone jewelry piece, please browse through my other listings or contact me. I have more exquisite pieces available for purchase in a variety of styles that have not been posted.