At TDiamonds we offer a range of services to our clients to assist with making the important investment in diamonds the pleasure that it should be.
Custom design – GST and VAT free for overseas travelers – Expert – Secure national and International – Lifetime complimentary clean, check and service – International grading certificates

The 4Cs

Diamond color is all about what you can’t see. Diamonds are valued by how closely they approach colorlessness – the less color, the higher their value. (The exception to this is fancy color diamonds, such as pinks and blues, which lie outside this color range.) Most diamonds found in jewelry stores
run from colorless to near-colorless, with slight hints of yellow or brown.

Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip.
(Don’t confuse carat with karat, as in “18K gold,” which refers to gold purity.)

Cut is the factor that fuels a diamond’s fire, sparkle and brilliance. The traditional 58 facets in a round brilliant diamond, each precisely cut and defined, are as small as two millimeters in diameter. But without this precision, a diamond wouldn’t be nearly as beautiful.
The allure of a particular diamond depends more on cut than anything else.

Because diamonds formed deep within the earth, under extreme heat and pressure, they often contain unique birthmarks, either internal (inclusions) or external (blemishes). Diamond clarity refers to the absence of these inclusions and blemishes. Diamonds without these birthmarks are rare, and rarity affects a diamond’s value.  Every diamond is unique. None is absolutely perfect under 10× magnification, though some come close. Known as Flawless diamonds, these are exceptionally rare.


If you are interested in more than simply the 4 C’s of diamonds then you can learn more here. We discuss what sets the best diamonds apart and what is happening in the world of unique & custom engagement ring design.

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Valentine’s Day is a very romantic day of the year to propose – you will always remember this as
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1. Swedish couple Ola and Lena Paahlsson lost their engagement ring in 1995. They searched everywhere, even removing the tiling
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Rough Diamond Gallery
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Diamond cutting vastly improves the brilliance and sparkle of rough diamonds. Diamonds often come out of the ground
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#616/185 Elizabeth St, Sydney