Natural Marquise Diamond Prices in Australia
Last updated: September 2026
By Carat Weight
Price Distribution
LowHigh
| Colour | FL | IF | VVS1 | VVS2 | VS1 | VS2 | SI1 | SI2 | I |
|---|---|---|---|---|---|---|---|---|---|
| D-E | $26K | $15K | $15K | $14K | $13K | $12K | $9,479 | $7,179 | $5,431 |
| F-G | $2,528 | $12K | $11K | $15K | $11K | $10K | $12K | $6,962 | $6,165 |
| H-I | $2,143 | $8,923 | $8,727 | $10K | $6,952 | $7,873 | $7,776 | $5,610 | $5,934 |
| J-K | - | $6,482 | $5,534 | $4,627 | $5,487 | $4,880 | $5,308 | $4,351 | $5,032 |
| L-M | - | $2,906 | $2,374 | $2,296 | $2,586 | $3,926 | $2,697 | $2,815 | $1,569 |
| N+ | - | $1,681 | $3,262 | $1,664 | $1,479 | $2,181 | $16K | $8,787 | $6,928 |
By Carat Weight
0.20-0.29
9,044 listings
Avg: $5,737 AUD/ct
0.30-0.49
123,866 listings
Avg: $2,669 AUD/ct
0.50-0.74
133,883 listings
Avg: $2,820 AUD/ct
0.75-0.99
24,152 listings
Avg: $3,804 AUD/ct
1.00-1.24
73,615 listings
Avg: $5,212 AUD/ct
1.25-1.49
4,273 listings
Avg: $7,393 AUD/ct
1.50-1.99
26,820 listings
Avg: $9,073 AUD/ct
2.00-2.49
14,875 listings
Avg: $12,111 AUD/ct
2.50-2.99
2,701 listings
Avg: $17,150 AUD/ct
3.00-3.99
3,758 listings
Avg: $19,799 AUD/ct
4.00-4.99
568 listings
Avg: $25,898 AUD/ct
5.00-9.99
579 listings
Avg: $33,247 AUD/ct
10.00+
70 listings
Avg: $67,256 AUD/ct
unknown
1,788 listings
Avg: $16,328 AUD/ct
Price by Colour & Clarity
| Colour | Clarity | Listings | Avg Price/ct |
|---|---|---|---|
| D-E | FL | 1,353 | $37,011 AUD |
| D-E | I | 2,715 | $7,623 AUD |
| D-E | IF | 11,046 | $21,078 AUD |
| D-E | SI1 | 28,586 | $13,303 AUD |
| D-E | SI2 | 22,056 | $10,075 AUD |
| D-E | VS1 | 29,477 | $17,964 AUD |
| D-E | VS2 | 30,307 | $16,694 AUD |
| D-E | VVS1 | 25,522 | $20,528 AUD |
| D-E | VVS2 | 22,496 | $20,285 AUD |
| F-G | FL | 38 | $3,548 AUD |
| F-G | I | 2,864 | $8,653 AUD |
| F-G | IF | 4,886 | $16,613 AUD |
| F-G | SI1 | 21,799 | $16,602 AUD |
| F-G | SI2 | 21,268 | $9,770 AUD |
| F-G | VS1 | 20,416 | $15,264 AUD |
| F-G | VS2 | 21,280 | $14,166 AUD |
| F-G | VVS1 | 13,029 | $15,647 AUD |
| F-G | VVS2 | 14,790 | $20,967 AUD |
| H-I | FL | 28 | $3,008 AUD |
| H-I | I | 2,811 | $8,328 AUD |
| H-I | IF | 3,919 | $12,523 AUD |
| H-I | SI1 | 14,278 | $10,913 AUD |
| H-I | SI2 | 15,969 | $7,873 AUD |
| H-I | VS1 | 12,521 | $9,756 AUD |
| H-I | VS2 | 13,506 | $11,049 AUD |
| H-I | VVS1 | 8,268 | $12,247 AUD |
| H-I | VVS2 | 8,888 | $14,193 AUD |
| J-K | I | 1,377 | $7,062 AUD |
| J-K | IF | 1,511 | $9,097 AUD |
| J-K | SI1 | 7,327 | $7,449 AUD |
| J-K | SI2 | 7,968 | $6,107 AUD |
| J-K | VS1 | 4,799 | $7,700 AUD |
| J-K | VS2 | 5,957 | $6,849 AUD |
| J-K | VVS1 | 3,440 | $7,766 AUD |
| J-K | VVS2 | 3,281 | $6,494 AUD |
| L-M | I | 149 | $2,202 AUD |
| L-M | IF | 213 | $4,078 AUD |
| L-M | SI1 | 1,185 | $3,785 AUD |
| L-M | SI2 | 1,386 | $3,951 AUD |
| L-M | VS1 | 788 | $3,629 AUD |
| L-M | VS2 | 1,044 | $5,509 AUD |
| L-M | VVS1 | 394 | $3,331 AUD |
| L-M | VVS2 | 480 | $3,222 AUD |
| N+ | I | 755 | $9,723 AUD |
| N+ | IF | 26 | $2,359 AUD |
| N+ | SI1 | 509 | $22,787 AUD |
| N+ | SI2 | 641 | $12,332 AUD |
| N+ | VS1 | 626 | $2,076 AUD |
| N+ | VS2 | 696 | $3,061 AUD |
| N+ | VVS1 | 95 | $4,578 AUD |
| N+ | VVS2 | 1,060 | $2,336 AUD |
| N+ | other | 169 | $24,227 AUD |