1.03 ct. Tenebrescent Scapolite
|Color: Colorless / Medium Blue||Clarity: Eye Clean|
|Origin: Pakistan||Cut: Oval Brilliant|
|Treatments: None||Measurements: 8.1 x 6.1 mm|
A superb example of this very unusual gem material. The find of this odd variety of Scapolite (tenebrescence was previously unknown in this species) occurred a number of years ago now and there has been no subsequent production of rough. The deepest blue is best achieved with a shortwave UV lamp at very close range - remove the light and the ambient light will then quickly fade the stone back to colorless. This can be sped up by shining a little direct light on the gem - we did this and the two photos above were taken no more than 30 seconds apart!
The strength of the change in this stone is excellent - the find produced a range of stone from those that had almost no change at all, to small few that reached a pure medium blue. Moreover, the quality is excellent and very fine truly clean gems where to be had over a carat in weight. An unusual rarity from an apparent one-time find.
$275 / carat - $283 total