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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7521547893

Certificate GIA 7521547893

Diamond specifications and retailer prices

From $4,089 AUD
$2,872 USD
As of October 30, 2026
Save $4,768 AUD (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $8,856 AUD at NZ Jewellers · As of October 30, 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 7521547893. Listed at 23 retailers as of October 30, 2026, with prices from $4,089 to $8,856, a $4,768 spread on the same certified stone. NZ Jewellers lists it at $8,856. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7521547893
Dimensions6.77 × 6.82 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Cloud, Feather, Needle
Top View
6.77 mm6.82 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521547893
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.1%

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: Oct 30
Current: $8,856 AUD|Low: $3,896 AUD|High: $8,856 AUD|Avg: $5,387 AUD
NZ Jewellers
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 14$4,089 AUD
Retailer 13$4,171 AUD
Retailer 4$4,251 AUD
Retailer 6$4,308 AUD
Retailer 8$4,463 AUD
Retailer 7$4,605 AUD
Retailer 18$4,605 AUD
Retailer 21$4,782 AUD
Retailer 15$4,891 AUD
Retailer 12$4,948 AUD
Retailer 11$5,225 AUD
Retailer 17$5,280 AUD
Retailer 20$5,314 AUD
Retailer 5$5,445 AUD
Retailer 10$5,548 AUD
Retailer 9$5,760 AUD
Retailer 3$5,903 AUD
Retailer 2$5,925 AUD
Retailer 19$6,248 AUD
Retailer 16$8,501 AUD
NZ Jewellers$8,856 AUD

29 data points across 21 retailers

23 retailers$4,089 AUD to $8,856 AUD

A
Cheapest Retailer
-
$4,089 AUD
$2,872 USD
A
Retailer 2
-
$4,171 AUD
$2,930 USD
View
B+
Retailer 3
-
$4,251 AUD
$2,986 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,308 AUD
$3,026 USD
View
B+
Retailer 5
-
$4,463 AUD
$3,135 USD
View
B+
Retailer 6
-
$4,605 AUD
$3,235 USD
View
Retailer 7
-
$4,605 AUD
$3,235 USD
View
Price last confirmed 20 days ago
Retailer 8
-
$4,782 AUD
$3,359 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$4,891 AUD
£2,705 GBP
View
B+
Retailer 10
-
$4,948 AUD
$3,476 USD
View
B+
Retailer 11
-
$5,225 AUD
$3,670 USD
View
B+
Retailer 12
-
$5,225 AUD
$3,670 USD
View
B+
Retailer 13
-
$5,280 AUD
£2,921 GBP
View
B
Retailer 14
-
$5,314 AUD
$3,733 USD
View
B
Retailer 15
-
$5,395 AUD
$3,790 USD
View
Retailer 16
-
$5,445 AUD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$5,548 AUD
$3,897 USD
View
Retailer 18
-
$5,760 AUD
$4,046 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$5,903 AUD
£3,265 GBP
View
B+
Retailer 20
-
$5,925 AUD
€3,964 EUR
View
B
Retailer 21
-
$6,248 AUD
ZAR 70,907 ZAR
View
B
Retailer 22
-
$8,501 AUD
£4,702 GBP
View
Most Expensive
B
NZ Jewellers
655235fe-fedf-4e3c-8fa2-68ce32aef74c · Oct 30
$8,856 AUD
$6,221 USD
View
22 more retailers have this diamond
Prices start from $4,089 AUDSave up to $4,768 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
$4,089 AUD