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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

VG • H/SI1 • GIA 6432543536

Certificate GIA 6432543536

Diamond specifications and retailer prices

From $3,806 AUD
As of October 31, 2026
Save $5,784 AUD (60%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,590 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6432543536. Listed at 21 retailers as of October 31, 2026, with prices from $3,806 to $9,590, a $5,784 spread on the same certified stone. Diamond Quarter lists it at $9,590. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6432543536
Dimensions6.72 × 6.64 × 4.27 mm
L/W Ratio1.01
Top View
6.72 mm6.64 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6432543536
Side View
Table 55.0%Crown 36.5°Girdle: THN-THKPavilion 40.6°Culet: NoneDepth 64.0%

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: Oct 31
Current: $5,349 AUD|Low: $3,797 AUD|High: $8,872 AUD|Avg: $5,467 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$3,806 AUD
Retailer 9$3,855 AUD
Retailer 11$4,654 AUD
Retailer 10$4,838 AUD
Retailer 1$5,349 AUD
Retailer 4$5,391 AUD
Retailer 3$5,443 AUD
Retailer 7$5,557 AUD
Retailer 2$5,613 AUD
Retailer 5$6,398 AUD
Retailer 6$8,743 AUD

42 data points across 11 retailers

21 retailers$3,806 AUD to $9,590 AUD

A
Cheapest Retailer
-
$3,806 AUD
A
Retailer 2
-
$3,855 AUD
View
B+
Retailer 3
-
$4,552 AUD
View
B+
Retailer 4
-
$4,654 AUD
View
B+
Retailer 5
-
$4,838 AUD
View
Final sale: no returns
Retailer 6
-
$4,953 AUD
View
Price last confirmed 103 days ago
B
Retailer 7
-
$5,036 AUD
View
B
Retailer 8
-
$5,242 AUD
View
Retailer 9
-
$5,242 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$5,349 AUD
View
B
Retailer 11
-
$5,391 AUD
View
B
Retailer 12
-
$5,443 AUD
View
B
Retailer 13
-
$5,452 AUD
View
B
Retailer 14
-
$5,548 AUD
View
B
Retailer 15
-
$5,557 AUD
View
Retailer 16
-
$5,613 AUD
View
Price last confirmed 30 days ago
B
Retailer 17
-
$6,049 AUD
View
B
Retailer 18
-
$6,398 AUD
View
B
Retailer 19
-
$8,743 AUD
View
C
Retailer 20
-
$9,133 AUD
View
Most Expensive
C
Diamond Quarter
1.2SI1H64364817N · Nov 5
$9,590 AUD
£5,188 GBP
View
20 more retailers have this diamond
Prices start from $3,806 AUDSave up to $5,784 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
$3,806 AUD