Diamonds · Australia-wide
Diamonds, natural and lab-grown
In-stock diamonds, selected for how they look. Delivered Australia-wide.
By the CTJ Jewellery team, led by founder Greg Ward · Updated September 2026 · Editorial policy
Key facts
- Natural and lab-grown diamonds
- All shapes, sizes and qualities
- GIA and IGI grading reports where applicable
- Wholesale-direct pricing
- More than 30 years in the diamond industry
- Insured delivery Australia-wide
Natural diamonds
Formed in the earth over billions of years and valued for their geological rarity.
Natural diamonds guideLab-grown diamonds
Real diamonds grown in weeks, with the same properties as natural at a lower price.
Lab-grown diamonds guideLoose diamonds
Choose your own diamond for an engagement ring, studs, a pendant or a custom piece. Diamond selection and sourcing is complimentary with your purchase.
Loose diamondsDiamond jewellery
Engagement rings, wedding and eternity rings, stud earrings, tennis bracelets, pendants and necklaces.
How do you choose a diamond?
Start with your priorities, choose natural or lab-grown, then balance the four Cs with cut first. Always compare real diamonds side by side.
How to buy a diamond