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Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3555551384

Certificate GIA 3555551384

Diamond specifications and retailer prices

From $4,503 NZD
As of November 6, 2026
Save $6,232 NZD (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $10,735 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555551384. Listed at 9 retailers as of November 5, 2026, with prices from $4,503 to $10,735, a $6,232 spread on the same certified stone. NZ Jewellers lists it at $10,735. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 3555551384
Dimensions6.68 × 6.73 × 4.26 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural
Top View
6.68 mm6.73 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3555551384
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 63.5%

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: $10,735 NZD|Low: $4,503 NZD|High: $11,426 NZD|Avg: $7,288 NZD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$4,503 NZD
Retailer 6$5,345 NZD
Retailer 9$5,496 NZD
Retailer 8$6,162 NZD
Retailer 4$6,247 NZD
Retailer 2$6,315 NZD
Retailer 7$7,183 NZD
Retailer 5$10,277 NZD
NZ Jewellers$10,735 NZD

41 data points across 9 retailers

9 retailers$4,503 NZD to $10,735 NZD

A
Cheapest Retailer
-
$4,503 NZD
A
Retailer 2
-
$5,345 NZD
View
A
Retailer 3
-
$5,496 NZD
View
A
Retailer 4
-
$6,162 NZD
View
A
Retailer 5
-
$6,247 NZD
View
A
Retailer 6
-
$6,315 NZD
View
B+
Retailer 7
-
$7,183 NZD
View
B+
Retailer 8
-
$10,277 NZD
View
Most Expensive
B
NZ Jewellers
b7335a54-dc7a-46d8-b154-9af7e0d6ced2 · Nov 5
$10,735 NZD
$5,951 USD
View
8 more retailers have this diamond
Prices start from $4,503 NZDSave up to $6,232 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
$4,503 NZD