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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6565096000

Certificate GIA 6565096000

Diamond specifications and retailer prices

From $3,371 AUD
HK$18,500 HKD
As of November 1, 2026
Save $3,830 AUD (53%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $7,880 AUD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565096000. Listed at 29 retailers as of October 29, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565096000
Dimensions6.72 × 6.76 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.72 mm6.76 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565096000
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,275 AUD|Low: $3,225 AUD|High: $9,362 AUD|Avg: $4,713 AUD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 11$3,351 AUD
Retailer 17$3,371 AUD
Retailer 4$3,605 AUD
Retailer 20$3,667 AUD
Retailer 2$3,716 AUD
Retailer 21$3,725 AUD
Retailer 18$3,943 AUD
Retailer 1$4,275 AUD
Retailer 13$4,573 AUD
Retailer 3$4,584 AUD
Retailer 5$4,584 AUD
Retailer 12$4,615 AUD
Retailer 6$4,741 AUD
Retailer 14$4,764 AUD
Retailer 19$4,894 AUD
Retailer 8$4,973 AUD
Retailer 7$4,981 AUD
Retailer 10$5,136 AUD
Retailer 16$5,267 AUD
Retailer 15$5,461 AUD
Retailer 9$7,201 AUD

22 data points across 21 retailers

29 retailers$3,371 AUD to $7,201 AUD

Retailer 1
-
$3,351 AUD
₹224,172 INR
Price last confirmed 17 days ago
A
Retailer 2
-
$3,371 AUD
HK$18,500 HKD
View
A
Retailer 3
-
$3,605 AUD
$2,532 USD
View
A
Retailer 4
-
$3,667 AUD
$2,576 USD
View
A
Retailer 5
-
$3,716 AUD
$2,610 USD
View
Final sale: no returns
A
Retailer 6
-
$3,725 AUD
View
A
Retailer 7
-
$3,943 AUD
$2,770 USD
View
B+
Retailer 8
-
$4,275 AUD
£2,365 GBP
View
B+
Retailer 9
-
$4,329 AUD
View
Retailer 10
-
$4,410 AUD
$3,098 USD
View
Price last confirmed 16 days ago
Retailer 11
-
$4,493 AUD
$3,156 USD
View
Price last confirmed 18 days ago
Retailer 12
-
$4,523 AUD
$3,177 USD
View
Price last confirmed 39 days ago
Retailer 13
-
$4,573 AUD
SGD 4,341 SGD
View
Price last confirmed 16 days ago
Retailer 14
-
$4,580 AUD
$3,217 USD
View
Price last confirmed 17 days ago
B+
Retailer 15
-
$4,584 AUD
$3,220 USD
View
B+
Retailer 16
-
$4,584 AUD
$3,220 USD
View
B+
Retailer 17
-
$4,615 AUD
£2,552 GBP
View
B+
Retailer 18
-
$4,641 AUD
$3,260 USD
View
B+
Retailer 19
-
$4,741 AUD
$3,330 USD
View
Retailer 20
-
$4,764 AUD
View
Price last confirmed 28 days ago
B+
Retailer 21
-
$4,894 AUD
€3,274 EUR
View
B+
Retailer 22
-
$4,981 AUD
$3,499 USD
View
Retailer 23
-
$5,089 AUD
$3,575 USD
View
Price last confirmed 16 days ago
Retailer 24
-
$5,219 AUD
$3,666 USD
View
Price last confirmed 40 days ago
B
Retailer 25
-
$5,267 AUD
$3,700 USD
View
B
Retailer 26
-
$5,461 AUD
ZAR 61,977 ZAR
View
B
Retailer 27
-
$7,201 AUD
£3,983 GBP
View
Retailer 28
-
$7,827 AUD
$5,498 USD
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
497a3de9-1854-4a3a-a2ce-57aeb4a2a35d · Sep 21
$7,880 AUD
$5,535 USD
View
Price last confirmed 41 days ago
28 more retailers have this diamond
Prices start from $3,371 AUDSave up to $3,830 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Round
$3,371 AUD