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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1459117061

Certificate GIA 1459117061

Diamond specifications and retailer prices

From $3,404 SGD
HK$20,800 HKD
As of November 1, 2026
Save $4,000 SGD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,290 SGD at NZ Jewellers · As of September 30, 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 1459117061. Listed at 21 retailers as of November 1, 2026, with a 118% 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1459117061
Dimensions9.18 × 5.19 × 3.55 mm
L/W Ratio1.77
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
9.18 mm5.19 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1459117061
Side View
Table 65.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.4%

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 1
Current: $4,627 SGD|Low: $3,371 SGD|High: $8,043 SGD|Avg: $4,872 SGD|-6.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 9$3,404 SGD
Retailer 6$3,649 SGD
Retailer 12$4,038 SGD
Retailer 13$4,086 SGD
Retailer 4$4,252 SGD
Retailer 3$4,557 SGD
Retailer 11$4,612 SGD
Retailer 1$4,627 SGD
Retailer 2$4,705 SGD
Retailer 5$5,098 SGD
Retailer 10$5,184 SGD
Retailer 8$5,442 SGD
Retailer 7$7,403 SGD

33 data points across 13 retailers

21 retailers$3,404 SGD to $7,403 SGD

A
Cheapest Retailer
-
$3,404 SGD
HK$20,800 HKD
A
Retailer 2
-
$3,649 SGD
₹271,875 INR
View
A
Retailer 3
-
$4,038 SGD
$3,159 USD
View
A
Retailer 4
-
$4,086 SGD
$3,196 USD
View
Final sale: no returns
A
Retailer 5
-
$4,252 SGD
View
A
Retailer 6
-
$4,460 SGD
$3,489 USD
View
A
Retailer 7
-
$4,462 SGD
$3,490 USD
View
A
Retailer 8
-
$4,557 SGD
View
A
Retailer 9
-
$4,612 SGD
$3,608 USD
View
A
Retailer 10
-
$4,627 SGD
£2,850 GBP
View
A
Retailer 11
-
$4,705 SGD
$3,680 USD
View
B+
Retailer 12
-
$4,743 SGD
A$5,708 AUD
View
Retailer 13
-
$4,759 SGD
$3,723 USD
View
Price last confirmed 25 days ago
Retailer 14
-
$4,759 SGD
$3,723 USD
View
Price last confirmed 25 days ago
Retailer 15
-
$4,942 SGD
$3,866 USD
View
Price last confirmed 32 days ago
Retailer 16
-
$5,098 SGD
A$6,135 AUD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$5,184 SGD
€3,862 EUR
View
B+
Retailer 18
-
$5,442 SGD
ZAR 68,766 ZAR
View
Retailer 19
-
$5,491 SGD
$4,295 USD
View
Price last confirmed 23 days ago
B
Retailer 20
-
$7,403 SGD
£4,560 GBP
View
Most Expensive
NZ Jewellers
034ab330-a956-44c8-ade5-01dcb0f68dbe · Sep 30
$8,290 SGD
$6,485 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $3,404 SGDSave up to $4,000 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
$3,404 SGD