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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2557507607

Certificate GIA 2557507607

Diamond specifications and retailer prices

From $4,894 NZD
As of November 6, 2026
Save $6,433 NZD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,327 NZD at NZ Jewellers · As of November 5, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557507607. Listed at 15 retailers as of November 5, 2026, with prices from $4,894 to $11,327, a $6,433 spread on the same certified stone. NZ Jewellers lists it at $11,327. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557507607
Dimensions6.81 × 6.77 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.81 mm6.77 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557507607
Side View
Table 60.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.7%

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 6
Current: $11,327 NZD|Low: $4,849 NZD|High: $11,648 NZD|Avg: $7,048 NZD|-2.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 15$4,894 NZD
Retailer 10$5,130 NZD
Retailer 11$5,168 NZD
Retailer 5$5,435 NZD
Retailer 6$5,498 NZD
Retailer 13$5,664 NZD
Retailer 14$5,718 NZD
Retailer 4$5,928 NZD
Retailer 8$6,128 NZD
Retailer 2$6,222 NZD
Retailer 7$7,706 NZD
Retailer 3$8,875 NZD
Retailer 12$9,822 NZD
Retailer 9$10,841 NZD
NZ Jewellers$11,327 NZD

27 data points across 15 retailers

15 retailers$4,894 NZD to $11,327 NZD

A
Cheapest Retailer
-
$4,894 NZD
A
Retailer 2
-
$5,130 NZD
View
A
Retailer 3
-
$5,168 NZD
View
A
Retailer 4
-
$5,435 NZD
View
Final sale: no returns
A
Retailer 5
-
$5,498 NZD
View
A
Retailer 6
-
$5,664 NZD
View
A
Retailer 7
-
$5,718 NZD
View
A
Retailer 8
-
$5,928 NZD
View
A
Retailer 9
-
$6,128 NZD
View
A
Retailer 10
-
$6,222 NZD
View
B+
Retailer 11
-
$6,552 NZD
View
B+
Retailer 12
-
$8,875 NZD
View
B+
Retailer 13
-
$9,822 NZD
View
B
Retailer 14
-
$10,841 NZD
View
Most Expensive
B
NZ Jewellers
b5e2a5a0-232f-4fbd-9b97-2bc3c786694f · Nov 5
$11,327 NZD
$6,279 USD
View
14 more retailers have this diamond
Prices start from $4,894 NZDSave up to $6,433 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
$4,894 NZD