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Key selling features of an Australian diamond

How can you tell its an Australian diamond?

SupplierĀ certificates/letters of origin

Provenance (lot numbers, Select Diamantaire invoice numbers)

Inscription (if any)

Most, but not all, are typically fluorescent

Presence of characteristics typical of the mine (black pique, strong graining lines, twisted grain inside the stone which makes it harder to polish than other mine productions)