1.30 carat natural sapphire from Umba, Tanzania showing a color change from blue in daylight to steely blue and violet tones under indoor lighting. The shift is subtle but noticeable, with a cool-toned palette across environments.
Untreated. Eye-clean, with minor inclusions typical of Umba material that do not detract from overall appearance.
Cut in a custom faceting design for balanced brightness and consistent performance across lighting conditions.
Origin: Umba Valley, Tanzania
Weight: 1.30 carats
Treatment: None (unheated, untreated)
Color change: Daylight – blue; Indoor – steely blue/violet
Clarity: Eye-clean; minor typical inclusions
Cut: Precision faceted
1.30 carat natural sapphire from Umba, Tanzania showing a color change from blue in daylight to steely blue and violet tones under indoor lighting. The shift is subtle but noticeable, with a cool-toned palette across environments.
Untreated. Eye-clean, with minor inclusions typical of Umba material that do not detract from overall appearance.
Cut in a custom faceting design for balanced brightness and consistent performance across lighting conditions.
Origin: Umba Valley, Tanzania
Weight: 1.30 carats
Treatment: None (unheated, untreated)
Color change: Daylight – blue; Indoor – steely blue/violet
Clarity: Eye-clean; minor typical inclusions
Cut: Precision faceted
