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Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1439457358

Certificate GIA 1439457358

Diamond specifications and retailer prices

From $4,558 NZD
As of November 4, 2026
Save $9,226 NZD (67%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,785 NZD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1439457358. Listed at 21 retailers as of November 4, 2026, with prices from $4,558 to $13,785, a $9,226 spread on the same certified stone. Diamond Quarter lists it at $13,785. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1439457358
Dimensions6.79 × 6.75 × 4.25 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Top View
6.79 mm6.75 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1439457358
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 4
Current: $6,481 NZD|Low: $4,142 NZD|High: $10,057 NZD|Avg: $5,966 NZD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$4,663 NZD
Retailer 9$4,665 NZD
Retailer 7$4,970 NZD
Retailer 3$5,383 NZD
Retailer 10$5,498 NZD
Retailer 8$5,590 NZD
Retailer 11$5,845 NZD
Retailer 4$6,113 NZD
Retailer 2$6,211 NZD
Retailer 1$6,481 NZD
Retailer 5$9,911 NZD

41 data points across 11 retailers

21 retailers$4,558 NZD to $13,785 NZD

A
Cheapest Retailer
-
$4,558 NZD
A
Retailer 2
-
$4,663 NZD
View
A
Retailer 3
-
$4,665 NZD
View
A
Retailer 4
-
$4,681 NZD
View
A
Retailer 5
-
$4,970 NZD
View
Final sale: no returns
A
Retailer 6
-
$4,970 NZD
View
Retailer 7
-
$5,383 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$5,383 NZD
View
B+
Retailer 9
-
$5,498 NZD
View
B+
Retailer 10
-
$5,590 NZD
View
B+
Retailer 11
-
$5,845 NZD
View
B+
Retailer 12
-
$6,113 NZD
View
B+
Retailer 13
-
$6,115 NZD
View
B+
Retailer 14
-
$6,115 NZD
View
B+
Retailer 15
-
$6,211 NZD
View
B+
Retailer 16
-
$6,332 NZD
View
B+
Retailer 17
-
$6,481 NZD
View
Retailer 18
-
$6,891 NZD
View
Price last confirmed 14 days ago
B
Retailer 19
-
$9,911 NZD
View
B
Retailer 20
-
$10,353 NZD
View
Most Expensive
B
Diamond Quarter
1.2SI2H14589FD0N · Nov 5
$13,785 NZD
£6,017 GBP
View
20 more retailers have this diamond
Prices start from $4,558 NZDSave up to $9,226 NZD

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
$4,558 NZD