2015 gemstones wholesale china loose gemstone samples 5# Rectangle pagoda-shape corundum ruby gemstone

Synthetic Corundum

Corundum is formed of aluminum oxide (Al2O3).The color of the chromium-doped corundum is red, generally called ruby. The color is blue or colorless, called blue spphire. 

Corundum rich in color, almost includes the red, orange, yellow, green, cyan, blue, purple of the 

visible spectrum. Pure corundum is colorless, sometimes it will in different colors when presented 

with different trace elements , Polished surface with a Bright vitreous luster or sub-adamantine luster.

Dear Buyers,
Thank you for buying from us. We hope your shopping experience with us to be a good one.
You could enjoy the following services from us:
1. FREE SAMPLES for in stock products. You need only cover the shipping fee.
2.FREE SHIPPING for orders above $1000.0 USD dollars. Shipping fee for sample order will be refund as well.
3. 7 Days Return Policy WITHOUT REASON!!! Just make sure stones are undamaged and unused.

WHY CHOOSE US?
1.We are a Supplier with more than 15 years factory management experience.
2.OEM/ODM Service
3.Professional Packaging which will protect your goods from being demaged.
4.1 DAY delivery for in stock products.
5.Alibaba logistic. Low shipping charges. Tracking your packaging anytime, anywhere.