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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6545229748

Certificate GIA 6545229748

Diamond specifications and retailer prices

From $2,869 AUD
As of November 6, 2026
Save $3,721 AUD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,885 AUD at NZ Jewellers · As of October 3, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545229748. Listed at 21 retailers as of November 4, 2026, with a 130% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6545229748
Dimensions6.85 × 6.81 × 4.16 mm
L/W Ratio1.01
Top View
6.85 mm6.81 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545229748
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

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 6
Current: $2,972 AUD|Low: $2,869 AUD|High: $6,679 AUD|Avg: $4,191 AUD|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$2,869 AUD
Retailer 1$2,972 AUD
Retailer 9$3,342 AUD
Retailer 3$3,609 AUD
Retailer 5$3,967 AUD
Retailer 4$3,985 AUD
Retailer 6$4,417 AUD
Retailer 8$4,603 AUD
Retailer 7$4,672 AUD
Retailer 10$6,590 AUD

26 data points across 10 retailers

21 retailers$2,869 AUD to $6,590 AUD

A
Cheapest Retailer
-
$2,869 AUD
A
Retailer 2
-
$2,972 AUD
View
B+
Retailer 3
-
$3,342 AUD
View
B+
Retailer 4
-
$3,528 AUD
View
B+
Retailer 5
-
$3,548 AUD
View
B+
Retailer 6
-
$3,551 AUD
View
B+
Retailer 7
-
$3,609 AUD
View
Retailer 8
-
$3,772 AUD
View
Price last confirmed 39 days ago
Retailer 9
-
$3,772 AUD
View
Price last confirmed 25 days ago
B+
Retailer 10
-
$3,857 AUD
View
Retailer 11
-
$3,946 AUD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,967 AUD
View
B
Retailer 13
-
$3,976 AUD
View
B
Retailer 14
-
$3,985 AUD
View
Retailer 15
-
$4,352 AUD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$4,417 AUD
View
B
Retailer 17
-
$4,603 AUD
View
B+
Retailer 18
-
$4,672 AUD
View
B
Retailer 19
-
$6,590 AUD
View
Retailer 20
-
$7,885 AUD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
7345e70d-e7af-4eb5-af27-664b25f58f0f · Oct 3
$7,885 AUD
$5,418 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $2,869 AUDSave up to $3,721 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
$2,869 AUD