Madagascar Blue Sapphire — Unheated

ENCYCLOPEDIA · SKYJEMS
Madagascar Blue Sapphire — Unheated

- Key concepts
- madagascar sapphire, ilakaka sapphire, unheated sapphire, blue sapphire alternative
Madagascar entered the global sapphire market in the 1990s and, as of 2013, the Ilakaka deposit was described by GIA as probably the world’s largest sapphire producer. Unheated Madagascar blue sapphire — particularly from the Ilakaka and Sakaraha deposits — is known for vivid blue hues with a slight violet undertone, and origin determinations are available from GIA and other specialist laboratories. Skyjems carries a substantial Madagascar sapphire inventory, with GIA documentation available across the collection.
Why Madagascar matters
Two reasons. First, Madagascar’s Ilakaka and Sakaraha deposits have been a consistent source of fine sapphire since the 1990s, making this origin an important part of the global supply. Second, the trace-element fingerprint of Madagascar corundum is distinct enough that origin determination is reliable, which means buyers get true African pedigree on the lab letter. The colour at top quality is a vivid blue with slight violet undertone.
How Madagascar prices against Ceylon
The value of an unheated sapphire is influenced by origin, colour, clarity, and carat weight. Madagascar’s more recent entry into the market offers an alternative to historic Ceylon material, and the lab report provides the critical origin information you need to evaluate each stone.
Reading a lab report on Madagascar sapphire
Among the specialist laboratories active in this space, Lotus Gemology's Madagascar sapphire reports typically include origin = Madagascar (sometimes specifying Ilakaka or Sakaraha when supported), species = corundum (variety = sapphire), treatment = no indications of heating (for unheated), colour grade, measurements, and weight. Skyjems lists Madagascar sapphire with the lab letter referenced on the product page.
Five-step evaluation
(1) the lab report confirms origin = Madagascar and treatment = no indications of heating; (2) colour reads vivid blue with possible slight violet undertone; (3) clarity is eye-clean to lightly included; (4) cut returns light through the centre; (5) carat weight matches the lab.
Skyjems inventory snapshot
Browse our current unheated Madagascar sapphire selection — loose stones and finished pieces — at /collections/sapphire.
Private viewings and bespoke
Contact Skyjems at +1-416-366-3335 or request a private viewing.