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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5241078555

Certificate GIA 5241078555

Diamond specifications and retailer prices

From $4,373 AUD
HK$24,000 HKD
As of October 31, 2026
Save $5,355 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,081 AUD at NZ Jewellers · As of October 17, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5241078555. Listed at 21 retailers as of October 29, 2026, with a 122% 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5241078555
Dimensions6.90 × 6.87 × 4.14 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Cavity, Needle
Top View
6.90 mm6.87 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241078555
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.2%

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 31
Current: $7,112 AUD|Low: $4,373 AUD|High: $9,794 AUD|Avg: $6,342 AUD|+1.9%
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
October 31, 2026
Retailer 7$4,373 AUD
Retailer 6$4,557 AUD
Retailer 13$5,066 AUD
Retailer 4$5,317 AUD
Retailer 2$5,340 AUD
Retailer 10$5,584 AUD
Retailer 3$5,786 AUD
Retailer 8$5,882 AUD
Retailer 5$6,204 AUD
Retailer 9$6,547 AUD
Retailer 1$7,112 AUD
Retailer 11$9,646 AUD
Retailer 12$9,729 AUD

26 data points across 13 retailers

21 retailers$4,373 AUD to $9,729 AUD

A
Cheapest Retailer
-
$4,373 AUD
HK$24,000 HKD
A
Retailer 2
-
$4,557 AUD
₹304,892 INR
View
B+
Retailer 3
-
$5,066 AUD
SGD 4,809 SGD
View
B+
Retailer 4
-
$5,179 AUD
$3,638 USD
View
B+
Retailer 5
-
$5,313 AUD
$3,732 USD
View
B+
Retailer 6
-
$5,317 AUD
$3,735 USD
View
B+
Retailer 7
-
$5,340 AUD
$3,751 USD
View
Final sale: no returns
Retailer 8
-
$5,506 AUD
SGD 5,227 SGD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$5,584 AUD
£3,089 GBP
View
Retailer 10
-
$5,786 AUD
$4,064 USD
View
Price last confirmed 11 days ago
Retailer 11
-
$5,786 AUD
$4,064 USD
View
Price last confirmed 19 days ago
Retailer 12
-
$5,786 AUD
$4,064 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$5,882 AUD
£3,253 GBP
View
B+
Retailer 14
-
$5,996 AUD
$4,212 USD
View
Retailer 15
-
$6,204 AUD
View
Price last confirmed 27 days ago
B+
Retailer 16
-
$6,547 AUD
€4,380 EUR
View
Retailer 17
-
$6,677 AUD
$4,690 USD
View
Price last confirmed 13 days ago
B+
Retailer 18
-
$7,112 AUD
ZAR 80,709 ZAR
View
Retailer 19
-
$9,646 AUD
£5,335 GBP
View
Price last confirmed 9 days ago
B
Retailer 20
-
$9,729 AUD
£5,381 GBP
View
Most Expensive
NZ Jewellers
8e1cc228-1a90-48dd-8d16-6e0c29b4df9c · Oct 17
$10,081 AUD
$7,081 USD
View
Price last confirmed 14 days ago
20 more retailers have this diamond
Prices start from $4,373 AUDSave up to $5,355 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
$4,373 AUD