Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2546459773

Certificate GIA 2546459773

Diamond specifications and retailer prices

From $5,024 NZD
As of November 4, 2026
Save $2,664 NZD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,397 NZD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546459773. Listed at 19 retailers as of November 4, 2026, with a 53% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2546459773
Dimensions6.75 × 6.79 × 4.21 mm
L/W Ratio1.01
Top View
6.75 mm6.79 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2546459773
Side View
Table 60.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.2%

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 4
Current: $7,594 NZD|Low: $5,083 NZD|High: $11,071 NZD|Avg: $7,192 NZD|+14.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7$5,083 NZD
Retailer 3$5,199 NZD
Retailer 8$5,928 NZD
Retailer 4$7,006 NZD
Retailer 2$7,151 NZD
Retailer 9$7,410 NZD
Retailer 1$7,594 NZD
Retailer 5$7,887 NZD
Retailer 6$11,071 NZD

40 data points across 9 retailers

19 retailers$5,024 NZD to $7,688 NZD

B+
Cheapest Retailer
-
$5,024 NZD
B+
Retailer 2
-
$5,083 NZD
View
B+
Retailer 3
-
$5,156 NZD
View
B
Retailer 4
-
$5,199 NZD
View
Final sale: no returns
B+
Retailer 5
-
$5,455 NZD
View
Retailer 6
-
$5,928 NZD
View
Price last confirmed 37 days ago
B
Retailer 7
-
$6,059 NZD
View
Retailer 8
-
$6,155 NZD
View
Price last confirmed 39 days ago
B
Retailer 9
-
$6,442 NZD
View
B
Retailer 10
-
$6,442 NZD
View
Retailer 11
-
$6,839 NZD
View
Price last confirmed 39 days ago
Retailer 12
-
$7,006 NZD
View
Price last confirmed 36 days ago
B
Retailer 13
-
$7,151 NZD
View
Retailer 14
-
$7,410 NZD
View
Price last confirmed 37 days ago
B
Retailer 15
-
$7,594 NZD
View
B
Retailer 16
-
$7,688 NZD
View
Retailer 17
-
$7,887 NZD
View
Price last confirmed 38 days ago
Retailer 18
-
$11,071 NZD
View
Price last confirmed 37 days ago
Most Expensive
NZ Jewellers
bcf9dc78-1694-4342-af5e-fb6a715fbc54 · Sep 28
$11,397 NZD
$6,318 USD
View
Price last confirmed 39 days ago
18 more retailers have this diamond
Prices start from $5,024 NZDSave up to $2,664 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
$5,024 NZD