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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6555412535

Certificate GIA 6555412535

Diamond specifications and retailer prices

From $2,747 NZD
As of November 6, 2026
Save $4,068 NZD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,815 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555412535. Listed at 9 retailers as of November 5, 2026, with prices from $2,747 to $6,815, a $4,068 spread on the same certified stone. NZ Jewellers lists it at $6,815. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555412535
Dimensions6.71 × 6.76 × 4.20 mm
L/W Ratio1.01
Star length45%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Cavity, Feather, Needle, Natural
Top View
6.71 mm6.76 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555412535
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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: $6,815 NZD|Low: $2,745 NZD|High: $6,815 NZD|Avg: $3,539 NZD|+0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,747 NZD
Retailer 5$2,795 NZD
Retailer 7$2,795 NZD
Retailer 8$2,923 NZD
Retailer 9$2,944 NZD
Retailer 6$3,223 NZD
Retailer 4$3,410 NZD
Retailer 3$3,785 NZD
NZ Jewellers$6,815 NZD

40 data points across 9 retailers

9 retailers$2,747 NZD to $6,815 NZD

A
Cheapest Retailer
-
$2,747 NZD
A
Retailer 2
-
$2,795 NZD
View
Retailer 3
-
$2,795 NZD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$2,923 NZD
View
B+
Retailer 5
-
$2,944 NZD
View
B+
Retailer 6
-
$3,223 NZD
View
B+
Retailer 7
-
$3,410 NZD
View
B+
Retailer 8
-
$3,785 NZD
View
Most Expensive
C
NZ Jewellers
54b1ff15-49cf-4bc5-b5df-5bc48f4b0db9 · Nov 5
$6,815 NZD
$3,831 USD
View
8 more retailers have this diamond
Prices start from $2,747 NZDSave up to $4,068 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
$2,747 NZD