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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2557770796

Certificate GIA 2557770796

Diamond specifications and retailer prices

From $4,340 NZD
As of November 6, 2026
Save $5,469 NZD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $9,810 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557770796. Listed at 24 retailers as of November 5, 2026, with prices from $4,340 to $9,810, a $5,469 spread on the same certified stone. NZ Jewellers lists it at $9,810. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557770796
Dimensions6.72 × 6.75 × 4.22 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.72 mm6.75 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557770796
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: $9,810 NZD|Low: $4,317 NZD|High: $9,810 NZD|Avg: $6,193 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 7, 2026
Retailer 3$4,340 NZD
Retailer 18$4,340 NZD
Retailer 9$4,852 NZD
Retailer 11$4,883 NZD
Retailer 22$4,972 NZD
Retailer 8$5,042 NZD
Retailer 12$5,195 NZD
Retailer 24$5,275 NZD
Retailer 10$5,475 NZD
Retailer 5$5,630 NZD
Retailer 7$5,630 NZD
Retailer 2$5,789 NZD
Retailer 6$5,846 NZD
Retailer 4$5,888 NZD
Retailer 19$6,050 NZD
Retailer 13$6,370 NZD
Retailer 20$6,471 NZD
Retailer 14$6,496 NZD
Retailer 17$6,734 NZD
Retailer 21$6,871 NZD
Retailer 16$8,186 NZD
Retailer 15$8,413 NZD
Retailer 23$9,389 NZD
NZ Jewellers$9,810 NZD

26 data points across 24 retailers

24 retailers$4,340 NZD to $9,810 NZD

A
Cheapest Retailer
-
$4,340 NZD
A
Retailer 2
-
$4,340 NZD
View
A
Retailer 3
-
$4,852 NZD
View
A
Retailer 4
-
$4,883 NZD
View
A
Retailer 5
-
$4,972 NZD
View
A
Retailer 6
-
$5,042 NZD
View
A
Retailer 7
-
$5,195 NZD
View
Final sale: no returns
A
Retailer 8
-
$5,275 NZD
View
B+
Retailer 9
-
$5,475 NZD
View
Retailer 10
-
$5,630 NZD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$5,630 NZD
View
B+
Retailer 12
-
$5,789 NZD
View
B+
Retailer 13
-
$5,846 NZD
View
B+
Retailer 14
-
$5,888 NZD
View
B+
Retailer 15
-
$6,050 NZD
View
Retailer 16
-
$6,254 NZD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$6,370 NZD
View
B+
Retailer 18
-
$6,471 NZD
View
B+
Retailer 19
-
$6,496 NZD
View
B+
Retailer 20
-
$6,871 NZD
View
B
Retailer 21
-
$8,186 NZD
View
B
Retailer 22
-
$8,413 NZD
View
B
Retailer 23
-
$9,389 NZD
View
Most Expensive
B
NZ Jewellers
2083813b-8946-41b4-958e-caac659d28fe · Nov 5
$9,810 NZD
$5,438 USD
View
23 more retailers have this diamond
Prices start from $4,340 NZDSave up to $5,469 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
$4,340 NZD