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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1236729301

Certificate GIA 1236729301

Diamond specifications and retailer prices

From $3,464 SGD
As of November 2, 2026
Save $4,065 SGD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,529 SGD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two 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 1236729301. Listed at 8 retailers as of November 2, 2026, with prices from $3,464 to $7,529, a $4,065 spread on the same certified stone. NZ Jewellers lists it at $7,529. 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

1.51
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle44.89°
Pavilion angle31.06°
OriginNatural
Grading LabGIA
CertificateGIA 1236729301
Dimensions7.31 × 5.60 × 3.89 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.31 mm5.60 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1236729301
Side View
Table 67.0%Crown 44.89°Girdle: ThickPavilion 31.06°Culet: NoneDepth 69.6%

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 2
Current: $7,529 SGD|Low: $3,463 SGD|High: $7,842 SGD|Avg: $4,601 SGD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$3,464 SGD
Retailer 5$3,531 SGD
Retailer 7$3,601 SGD
Retailer 4$3,740 SGD
Retailer 6$3,791 SGD
Retailer 8$4,075 SGD
Retailer 10$4,245 SGD
Retailer 9$4,446 SGD
Retailer 2$6,309 SGD
NZ Jewellers$7,529 SGD

35 data points across 10 retailers

8 retailers$3,464 SGD to $7,529 SGD

A
Cheapest Retailer
-
$3,464 SGD
A
Retailer 2
-
$3,531 SGD
View
A
Retailer 3
-
$3,601 SGD
View
A
Retailer 4
-
$3,740 SGD
View
Retailer 5
-
$3,791 SGD
View
Price last confirmed 9 days ago
Retailer 6
-
$4,075 SGD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$6,309 SGD
View
Most Expensive
B
NZ Jewellers
ba55ec91-1321-4ed6-b548-4f3c073efa7c · Nov 3
$7,529 SGD
$5,875 USD
View
7 more retailers have this diamond
Prices start from $3,464 SGDSave up to $4,065 SGD

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
1.51ct Radiant
$3,464 SGD