MINISTRY OF GEMS®
DIGITAL GEMSTONE PASSPORT
Golden Yellow Australian Sapphire 6.23ct Cushion
STONE ID · 1688
Studio photograph of this individual stone
- Gem type
- Sapphire
- Origin
- Australia
- Carat weight
- 6.23 ct
- Dimensions
- 12.18 x 9.79 x 6.31 mm
- Shape & cut
- Cushion
- Colour
- Golden Yellow
- Tone & saturation
- Medium tone, vivid saturation
- Treatment
- Heated
- Certification
- Available on request
✓ Assessed in-house by our FGAA-qualified gemmologist, Sydney.
Treatment disclosure. Heat treatment disclosed. This sapphire has been heat-treated — a permanent, stable enhancement applied to the great majority of sapphires on the world market, and accepted trade practice when disclosed. Ministry of Gems discloses it here in full. Independent laboratory verification can be arranged on request before purchase.
Full treatment disclosure · independent laboratory certification on request · free lifetime re-authentication — this stone may be returned to the house at any time, by any owner, for verification against this record.
This stone appears on the house Treatment Register — every stone we offer, its status public.
This passport is served live from the Ministry of Gems catalogue — it cannot be forged by reprinting.
Verify at any time: ministryofgems.com.au/products/golden-yellow-australian-sapphire-6-23ct-cushion-1688?view=passport
Rendered 15 August 2026 · Ministry of Gems® · Sydney, NSW · ABN 85 635 892 732