Small size packed with plastic bag,, big size packed with tissue paper and tied with cushion rubber. Put the packaged goods into the carton box with the foam
7-10 days after receiving the payment, also depends on order!
Sapphires may be treated by several methods to enhance and improve their clarity and color. It is common practice to heat natural sapphires to improve or enhance color. This is done by heating the sapphires in ovens to temperatures between 500 and 1800 °C for several hours, or by heating in a nitrogen-deficient atmosphere oven for seven days or more. Upon heating, the stone becomes more blue in color but loses some of the rutile inclusions.
For Chinese black sapphire, it is natural sapphire, but in much cheaper price. we have large stock. It is very good for for silver jewelry and promotion items.
Pure black color: The stone color is very deep blue, so it looks black. but it is not black as hair or black agate. the shining is the best.
aluminium oxide, Al2O3
massive and granular
2030–2050 ° c
Chinese Black Sapphire Oval Shape 6*8mm
Chinese Black Sapphire Pear Shape 6*8mm
Forever Star Jewelry, is one of the most professional jewelry and gemstone mamufacturers in Panyu, Guangzhou, China.
1. Quality: We have strict quality control department to ensure the professional characteristic and good quality of our products.
2. Stone: stone cost is our biggest advantage. A wide range of color stone, precious,semi-precious and synthetic are available for change up to request, you can choose any stones that you like.
3. Designs: We also can provide OEM service for you! If you have your designs, please do not hesitate to send to us!
Our Website: www.9dia.com, www.9dia.cn
Mob.: (86)138 2449 7429 (Ms Hedy)
Tel: 8620-85596929 Fax: 8620-22883329
Address: Room 503, Tian' an Innovation Plaza, No 555, North Panyu Main Road, Panyu, Guangzhou, Guangdong, China