Pierre taillée bouclier fantaisie tanzanite couleur bio naturelle non chauffée unique 2,35 le plus cher carats

Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area near the Mererani Hills. Tanzanites appearance is influenced greatly by its pleochroism, which is the ability of a gemstone to show different colors when viewed in different crystal directions. Tanzanites pleochroism was documented in scientific papers not long after its discovery. In 1969, American Mineralogist described the gems pleochroic colors as `red-violet, deep blue, and yellow green. Today, most gems are heat treated, which removes or reduces the yellow green or brownish pleochroic color, maximizing the blue and violet. Top-quality tanzanite can be violetish blue --similar to a fine sapphire color --or a unique, predominately violet hue all its own. Some stones might also appear more purplish depending on how the cutter chooses to orient the fashioned gem. Both the violet and blue pleochroic colors are readily visible in a fashioned stone when it is gently rocked and tilted. This means that every tanzanite is a blend of these pleochroic colors. The exact face-up color depends on the inherent color of the original rough, its size, the pleochroic colors the cutter favors when they orient the fashioned stone, and the light the finished gem is viewed under. Cool lighting --like daylight equivalent fluorescent --will emphasize tanzanites blue, while warm lighting --like incandescent --will make it appear more violet-to-purple

We accept Payoneer and the rest other modes of payment are also accepted. It is easy and safe for you to pay by credit cards, debit cards, bank transfers, and Payoneer account balances. Payment should be made within 2 days after the winning of the item.

Each item is individually packed securely with quality products to help ensure safe and undamaged delivery.

We ship within 1 business day after payment is received. Delivery is generally within 10-15 days worldwide after shipping. In rare cases, it makes take up to 2-3 weeks for delivery depending upon the destinations and customs regulations in your country. All packages have a duly filled customs declaration form to avoid any delay in customs.

Your satisfaction is of the utmost concern to us. Should you need to return an item, you can do so within 30 days of receipt of the item for a full refund. Return shipping charges are not reimbursable. All items must be in their original condition, not worn or altered. Please contact us if you would like to initiate a return, so that we may guide you through the process. We can be reached through the "Ask a Question" link on the listings.

We strive for 100% Customer Satisfaction and we always leave positive feedback to our buyers.

Please help us maintain our business and give us a 5-Star rating. If you still think that you still can?t leave a 5-Star across the Board, please email us or call us and we assure you that your issue will be resolved immediately. We believe in solving the issues. Positive feedback represents our service, product quality, and dedication to customer satisfaction. Our future business depends on your satisfaction or positive feedback with a "5-star rating".