Sapphire Natural (Possibly Alexandrite) Color Change Mauve to Green (see photos)

Type: Sapphire Natural or Alexandrite from this region

Origin: Songea (or Tunduru), Tanzania

Weight: 1.36

Color: Mauve - incandescent and green on sunlight ( Alexandrite color change. Current priced as a sapphire color changer unless certificate specifies differently)

Cut: Round(Wyoming Star Mod. -89)(JJG)

Clarity: VVS (one sulfide crystal inclusion)

Size: 6.42 mm

Treatments: No Known Treatment - natural stone

Genealogy: Miner to Australian buyer in Tanzania. FOco gems cut.

Hardness: 9

Source: Broker Australia who split the parcel (they got the blues, FOco Gems got the residual);

They did not know four Alexandrite were part of the parcel

Comments: " The original weighed 3.99 cts from a broker in Australia who was on a buying mission in S. Tanzania. Ross R. picked the blues out and sent the rest. FOco Gems cut to a 1.36 cts stone retaining 34% of the original.

The stone is an amazing stone and the stone changes from mauve to green in a classic Alexandrite color change.

FOco gems realized the presence of this exotic stone when cutting because the stone kept changing color when working on it (cutting lights versus normal incandescence). 

A GIA certificate would be required to ID this fully as a Chrysoberyl (variety Alexandrite) which is why the stone is currently priced as a top grade color changing Sapphire."

Comments: The original weighed 3.0 cts from a broker in Australia who was on a buying mission in S. Tanzania. Ross R. picked the blues out and sent the rest. FOco Gems cut to a 1.02 cts stone retaining 34% of the original.

The stone is an amazing stone and the stone changes from mauve to green in a classic Alexandrite color change.

FOco Gems realized the presence of this exotic stone when cutting because the stone kept changing color when working on it (cutting lights versus normal incandescence). 

A GIA certificate would be required to ID this fully as a Chrysoberyl (variety Alexandrite) which is why the stone is currently priced as a top grade color changing Sapphire.

Cotton fibers from the stone packing cases may be photographed on the stone.