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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2547087793

Certificate GIA 2547087793

Diamond specifications and retailer prices

From $2,644 AUD
As of November 6, 2026
Save $3,452 AUD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,277 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 2547087793. Listed at 20 retailers as of November 2, 2026, with a 131% 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 angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2547087793
Dimensions6.85 × 6.79 × 4.16 mm
L/W Ratio1.01
Top View
6.85 mm6.79 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547087793
Side View
Table 60.0%Crown 35.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 61.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $2,745 AUD|Low: $2,626 AUD|High: $6,171 AUD|Avg: $3,865 AUD|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$2,644 AUD
Retailer 1$2,745 AUD
Retailer 5$3,081 AUD
Retailer 9$3,283 AUD
Retailer 6$3,660 AUD
Retailer 2$3,673 AUD
Retailer 4$4,248 AUD
Retailer 3$4,314 AUD
Retailer 7$6,097 AUD

36 data points across 9 retailers

20 retailers$2,644 AUD to $6,097 AUD

A
Cheapest Retailer
-
$2,644 AUD
A
Retailer 2
-
$2,745 AUD
View
A
Retailer 3
-
$3,081 AUD
View
B+
Retailer 4
-
$3,283 AUD
View
B+
Retailer 5
-
$3,299 AUD
View
B+
Retailer 6
-
$3,304 AUD
View
Retailer 7
-
$3,481 AUD
View
Price last confirmed 39 days ago
Retailer 8
-
$3,481 AUD
View
Price last confirmed 25 days ago
Retailer 9
-
$3,481 AUD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
$3,580 AUD
View
Retailer 11
-
$3,641 AUD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,660 AUD
View
B+
Retailer 13
-
$3,673 AUD
View
B+
Retailer 14
-
$3,684 AUD
View
Retailer 15
-
$4,015 AUD
View
Price last confirmed 38 days ago
B
Retailer 16
-
$4,248 AUD
View
B+
Retailer 17
-
$4,314 AUD
View
B
Retailer 18
-
$6,097 AUD
View
Retailer 19
-
$7,277 AUD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
ed50b4da-f898-4935-9ff3-8953f76d5939 · Oct 3
$7,277 AUD
$5,000 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,644 AUDSave up to $3,452 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
$2,644 AUD