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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 7548286172

Certificate GIA 7548286172

Diamond specifications and retailer prices

From $2,378 NZD
As of November 6, 2026
Save $3,379 NZD (59%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,125 NZD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7548286172. Listed at 19 retailers as of November 2, 2026, with a 142% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7548286172
Dimensions6.89 × 5.29 × 3.70 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Needle, Indented Natural
Top View
6.89 mm5.29 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7548286172
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.8%

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: $3,494 NZD|Low: $2,378 NZD|High: $5,890 NZD|Avg: $3,621 NZD|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5$2,378 NZD
Retailer 4$2,511 NZD
Retailer 8$2,904 NZD
Retailer 9$3,114 NZD
Retailer 3$3,283 NZD
Retailer 6$3,314 NZD
Retailer 1$3,494 NZD
Retailer 2$4,028 NZD
Retailer 7$4,277 NZD
Retailer 10$5,756 NZD

32 data points across 10 retailers

19 retailers$2,378 NZD to $5,756 NZD

A
Cheapest Retailer
-
$2,378 NZD
A
Retailer 2
-
$2,511 NZD
View
A
Retailer 3
-
$2,904 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,114 NZD
View
A
Retailer 5
-
$3,144 NZD
View
A
Retailer 6
-
$3,148 NZD
View
A
Retailer 7
-
$3,283 NZD
View
A
Retailer 8
-
$3,314 NZD
View
Retailer 9
-
$3,332 NZD
View
Price last confirmed 30 days ago
Retailer 10
-
$3,332 NZD
View
Price last confirmed 30 days ago
Retailer 11
-
$3,485 NZD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,494 NZD
View
B+
Retailer 13
-
$3,574 NZD
View
Retailer 14
-
$3,844 NZD
View
Price last confirmed 29 days ago
Retailer 15
-
$4,028 NZD
View
Price last confirmed 12 days ago
B+
Retailer 16
-
$4,277 NZD
View
Retailer 17
-
$4,346 NZD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$5,756 NZD
View
Most Expensive
NZ Jewellers
1f2a95a9-fe07-47c0-9727-c1747871d050 · Sep 30
$8,125 NZD
$4,504 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from $2,378 NZDSave up to $3,379 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 Radiant
$2,378 NZD