Top 50 Diamonds by Value in Australia

Our value score combines price, quality, certification and market context. These stones deliver the most per dollar across our inventory. Pricing shown in AUD.

Last updated 29 October 2026 · Based on 50 active listings ranked by value

What 'Best Value' Actually Means Here

Value score isn't just 'cheapest'. It's a composite that combines four signals: price versus peer-median for this exact shape/carat/colour/clarity bucket, our quality score, the certificate's rigour, and market context (how long this stone has been listed, how many retailers carry it, and whether price has moved recently). A stone scoring 95 on value is typically trading 15 to 30% below the median for its peer group with no compromise on quality.

This is the right list if your brief is 'I want to spend smart money.' We're surfacing diamonds that genuine market data says are under-priced relative to peers. Either because a retailer has unusual pricing, because the stone has been listed for a while, or because the specific spec isn't in high demand right now. Treat each entry as a starting point: click through, look at the photos, and check whether the quality holds up for you.

Value score can reward unusual specs that happen to be cheap but don't match what you want. A 1.5ct K/SI2 in 'Very Good' cut might top the value list but still not be what you're after. Always cross-check against quality score. The ideal buy has both value and quality in the top quartile.

#DiamondOriginGradeLowest Price (AUD)
12.08ct OVAL D IFnaturalA+$22,855 AUD
21.32ct ROUND E IFnaturalA+$11,666 AUD
31.30ct PRINCESS D IFnaturalA+$14,717 AUD
42.00ct MARQUISE E IFnaturalA+$27,072 AUD
51.34ct ROUND E IFnaturalA+$12,277 AUD
65.02ct ROUND E IFnaturalA+$218,619 AUD
73.03ct OVAL D FLnaturalA+$88,617 AUD
81.33ct ROUND E IFnaturalA+$12,570 AUD
91.33ct ROUND E FLnaturalA+$14,688 AUD
103.21ct HEART D IFnaturalA+$70,927 AUD
111.25ct ROUND D IFnaturalA+$9,974 AUD
121.55ct ROUND E FLnaturalA+$19,110 AUD
131.31ct ROUND D IFnaturalA+$12,431 AUD
145.14ct PEAR D FLnaturalA+$275,735 AUD
152.00ct HEART E IFnaturalA+$23,784 AUD
163.15ct PEAR D FLnaturalA+$92,257 AUD
172.50ct MARQUISE D IFnaturalA+$58,003 AUD
182.01ct EMERALD D IFnaturalA+$29,193 AUD
191.62ct ROUND D IFnaturalA+$18,588 AUD
201.53ct ROUND E IFnaturalA+$19,158 AUD
211.51ct ROUND E IFnaturalA+$17,745 AUD
221.33ct ROUND E IFnaturalA+$14,087 AUD
231.01ct MARQUISE D FLnaturalA+$5,515 AUD
240.68ct ROUND D IFnaturalA+$1,838 AUD
256.79ct ROUND D FLnaturalA+$283,616 AUD
262.56ct EMERALD G VVS1naturalA+$25,124 AUD
271.51ct OVAL D IFnaturalA+$16,526 AUD
281.42ct ROUND E IFnaturalA+$13,497 AUD
291.31ct ROUND E IFnaturalA+$13,923 AUD
301.28ct PEAR E IFnaturalA+$9,693 AUD
311.25ct ROUND E VVS2naturalA+$8,645 AUD
320.80ct PEAR D FLnaturalA+$3,258 AUD
330.60ct ROUND E IFnaturalA+$1,500 AUD
340.53ct ROUND D IFnaturalA+$1,238 AUD
3510.10ct PEAR E FLnaturalA+$855,217 AUD
364.02ct HEART D FLnaturalA+$154,794 AUD
373.03ct HEART D IFnaturalA+$85,907 AUD
383.01ct HEART E VVS2naturalA+$44,238 AUD
391.47ct ROUND E IFnaturalA+$17,891 AUD
401.35ct ROUND E IFnaturalA+$12,522 AUD
411.31ct ROUND D FLnaturalA+$12,740 AUD
421.30ct ROUND D VVS2naturalA+$8,882 AUD
431.30ct ROUND E IFnaturalA+$12,543 AUD
441.30ct ROUND D IFnaturalA+$15,527 AUD
451.01ct EMERALD E VVS2naturalA+$3,185 AUD
460.63ct ROUND E IFnaturalA+$1,256 AUD
470.55ct ROUND E VVS1naturalA+$983 AUD
480.54ct ROUND E IFnaturalA+$1,224 AUD
490.53ct ROUND D IFnaturalA+$1,532 AUD
500.52ct ROUND E IFnaturalA+$1,310 AUD
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