**Dear Customers, We will be closed 25 December-6 January. Have a Merry Christmas and a prosperous New Year! Looking forward to seeing you in 2025!** Welcome to our designer boutique located in Sydney's most iconic heritage building, The Strand Arcade. We believe in ethically sourcing our gemstones, having sustainable practices in our exclusive Sydney workshop, and most of all design and made with love. **Dear Customers, We will be closed 25 December-6 January. Have a Merry Christmas and a prosperous New Year! Looking forward to seeing you in 2025!** Welcome to our designer boutique located in Sydney's most iconic heritage building, The Strand Arcade. We believe in ethically sourcing our gemstones, having sustainable practices in our exclusive Sydney workshop and most of all design and made with love.

Diamond Grading Education (GIA)

Home / Diamond Grading Education (GIA)

Zappacosta Jewels strives to always educate our clients with the most up to date, relevant, reliable and trusted industry information. We have curated below some wonderful industry information that is recognised worldwide, to help inform you about diamonds, and your search for the perfect stone. The Gemmological Institute of America(GIA), is a laboratory that is highly recognised for their uniform grading system for diamonds, natural gemstones and pearls, and has set the standard internationally since 1931.

With a GIA certification, you can have full trust in what you are purchasing and know that your diamond has been graded correctly to the the most highest of standards worldwide. There are other grading laboratories, however GIA is regarded the highest, toughest and most trusted.

Contact us if you would like a copy of the GIA information buying guide. Please enquire here.