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1 Carat (1ct) Diamonds
Shop premium 1 carat diamonds at GS Diamonds, where each unique 1 carat diamond comes with its own GIA certification. Whether you’re comparing the diamonds’ price, or looking for a 1 carat diamond ring, explore exceptional loose stones across Australia for your perfect ring or custom jewellery piece.Â
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Some light loss. Reflects most light but not as brilliantly as higher grade cuts.
Noticeable colour. Not typically recommended for colourless diamond jewellery.
Setting price may increase for larger carat sizes.
Inclusions are visible under 10x magnification and may be visible with an unaided eye. More inclusions than SI1.
Products
Viewing 52 of 14016 products
Need some help choosing?
A 1 carat diamond is one of the most popular choices for engagement rings, offering a beautiful balance of size, brilliance and everyday wearability. At GS Diamonds, you can explore 1 carat loose diamond options in a range of cuts, colours and clarity grades, from timeless round diamonds to elegant oval, pear, cushion, princess and emerald shapes. Â
The 1 carat diamond price can vary significantly depending on cut, colour, clarity, certification and whether you choose a natural or lab-grown stone. If you’re comparing the price of 1 carat diamond in Australia, our online collection makes it easy to review different options and find the quality that suits your style and budget. A 1ct natural diamond offers lasting value and confidence, while a 1 carat lab grown diamond can provide a larger or higher-grade look at a more accessible price point. Â
Our 1 carat diamonds all come with a GIA grading report, helping you understand the true quality of your stone before purchase. Many stones are also laser inscribed for added peace of mind. Â
Browse our full diamonds collection to compare 1 carat loose diamond prices, or choose from one of our ready-made engagement rings. If you want something even more personal, our custom jewellery design service allows you to create a bespoke ring or fine jewellery piece around your selected diamond. Â
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Either way, choose GS Diamonds for a stunning piece of art that lasts forever.
The 1 carat diamond price varies depending on cut, colour, clarity, certification and whether the stone is natural or lab-grown. A higher-quality 1 carat natural diamond will usually cost more, while lab-grown options can offer a more accessible alternative with strong visual appeal.Â
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The price of a 1 carat diamond ring depends on the diamond quality, setting style, metal choice and craftsmanship. A simple solitaire setting will usually cost less than a detailed halo or custom design, while the centre stone has the biggest impact on the final price.Â
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A 1 carat diamond weighs 0.2 grams, but its visible size depends on the cut and shape. A round 1ct diamond typically measures around 6.4-6.5 mm across, while elongated shapes like oval, pear and marquise can appear larger on the finger.Â
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Yes, a 1 carat diamond is an excellent choice for an engagement ring. It offers noticeable sparkle without feeling too large for everyday wear, making it one of the most classic and versatile sizes for couples choosing a timeless diamond engagement ring.Â