Sapphire -Blue

Type: Sapphire Blue Natural

Origin: Luc Yen, Vietnam

Weight: 1.72

Color: Bright  blue with flash

Cut:  Oval - Foreign Cut - excellent

Clarity: VVS

Approx. Size: 5.96x7.3 mm

Treatments No Known Treatment

Genealogy: Stone mined and cut in Vietnam Hardness: 9

Source: Vietnam Broker

Comments: Spectacular stone  

Mined and cut in Vietnam. 

These naturally untreated stones are hard to find. 

There is a color growth band within the stone. (heating normally spreads those out)

Note This stone has a short history Miner-1 broker who cut the stone. While it has no evidence of commercial heating miners will use a pipet technique over a campfire and charcoal.  I do not see the normal color chromophore traces that the process leaves.