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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1328547279

Certificate GIA 1328547279

Diamond specifications and retailer prices

From $6,142 NZD
As of November 1, 2026
Save $7,553 NZD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,695 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 1328547279. Listed at 21 retailers as of November 5, 2026, with prices from $6,142 to $13,695, a $7,553 spread on the same certified stone. NZ Jewellers lists it at $13,695. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1328547279
Dimensions6.77 × 6.72 × 4.22 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.77 mm6.72 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1328547279
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $13,695 NZD|Low: $5,906 NZD|High: $13,695 NZD|Avg: $8,189 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
November 7, 2026
Retailer 3$6,142 NZD
Retailer 19$6,142 NZD
Retailer 7$6,267 NZD
Retailer 13$6,508 NZD
Retailer 5$6,801 NZD
Retailer 14$7,053 NZD
Retailer 4$7,106 NZD
Retailer 10$7,122 NZD
Retailer 11$7,122 NZD
Retailer 2$7,912 NZD
Retailer 8$7,937 NZD
Retailer 20$7,937 NZD
Retailer 16$8,139 NZD
Retailer 9$8,208 NZD
Retailer 12$8,231 NZD
Retailer 17$8,316 NZD
Retailer 6$8,891 NZD
Retailer 15$9,591 NZD
Retailer 18$12,487 NZD
NZ Jewellers$13,695 NZD

39 data points across 20 retailers

21 retailers$6,142 NZD to $13,695 NZD

B+
Cheapest Retailer
-
$6,142 NZD
B+
Retailer 2
-
$6,142 NZD
View
B+
Retailer 3
-
$6,267 NZD
View
B+
Retailer 4
-
$6,508 NZD
View
Final sale: no returns
B+
Retailer 5
-
$6,519 NZD
View
B
Retailer 6
-
$6,801 NZD
View
B+
Retailer 7
-
$7,053 NZD
View
B+
Retailer 8
-
$7,106 NZD
View
B+
Retailer 9
-
$7,122 NZD
View
Retailer 10
-
$7,122 NZD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$7,912 NZD
View
B
Retailer 12
-
$7,937 NZD
View
B
Retailer 13
-
$7,937 NZD
View
B
Retailer 14
-
$8,139 NZD
View
B
Retailer 15
-
$8,208 NZD
View
Retailer 16
-
$8,231 NZD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$8,316 NZD
View
Retailer 18
-
$8,891 NZD
View
Price last confirmed 15 days ago
B
Retailer 19
-
$9,591 NZD
View
B
Retailer 20
-
$12,487 NZD
View
Most Expensive
B
NZ Jewellers
ab56c08d-b5e9-43cc-b4c1-58d99346cb36 · Nov 5
$13,695 NZD
$7,592 USD
View
20 more retailers have this diamond
Prices start from $6,142 NZDSave up to $7,553 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.

B+
1.20ct Round
$6,142 NZD