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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 1509872489

Certificate GIA 1509872489

Diamond specifications and retailer prices

From $3,958 SGD
$3,095 USD
As of November 2, 2026
Save $2,045 SGD (34%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,938 SGD at NZ Jewellers · As of September 25, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1509872489. Listed at 20 retailers as of October 31, 2026, with a 52% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle33.1°
OriginNatural
Grading LabGIA
CertificateGIA 1509872489
Dimensions7.70 × 5.69 × 3.79 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.70 mm5.69 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1509872489
Side View
Table 66.0%CrownGirdle: THK-VTKPavilion 33.1°Culet: NoneDepth 66.6%

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: $3,994 SGD|Low: $3,906 SGD|High: $8,602 SGD|Avg: $5,069 SGD|-2.8%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 3$3,958 SGD
Retailer 17$3,958 SGD
Retailer 1$3,994 SGD
Retailer 12$4,084 SGD
Retailer 5$4,118 SGD
Retailer 14$4,196 SGD
Retailer 6$4,257 SGD
Retailer 8$4,493 SGD
Retailer 15$4,649 SGD
Retailer 10$4,786 SGD
Retailer 16$4,809 SGD
Retailer 13$4,996 SGD
Retailer 4$5,017 SGD
Retailer 11$5,716 SGD
Retailer 2$6,003 SGD
Retailer 7$8,208 SGD
Retailer 9$8,212 SGD

26 data points across 17 retailers

20 retailers$3,958 SGD to $6,003 SGD

A
Cheapest Retailer
-
$3,958 SGD
$3,095 USD
A
Retailer 2
-
$3,958 SGD
$3,095 USD
View
A
Retailer 3
-
$3,994 SGD
HK$24,400 HKD
View
A
Retailer 4
-
$4,084 SGD
$3,193 USD
View
Final sale: no returns
A
Retailer 5
-
$4,118 SGD
$3,220 USD
View
A
Retailer 6
-
$4,196 SGD
$3,281 USD
View
A
Retailer 7
-
$4,257 SGD
$3,328 USD
View
A
Retailer 8
-
$4,493 SGD
$3,513 USD
View
B+
Retailer 9
-
$4,649 SGD
A$5,593 AUD
View
B+
Retailer 10
-
$4,786 SGD
$3,742 USD
View
B+
Retailer 11
-
$4,809 SGD
$3,760 USD
View
B+
Retailer 12
-
$4,996 SGD
£3,076 GBP
View
B+
Retailer 13
-
$5,017 SGD
$3,923 USD
View
Retailer 14
-
$5,388 SGD
A$6,482 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$5,452 SGD
A$6,558 AUD
View
B+
Retailer 16
-
$5,716 SGD
€4,257 EUR
View
B+
Retailer 17
-
$6,003 SGD
ZAR 75,835 ZAR
View
Retailer 18
-
$8,208 SGD
$6,418 USD
View
Price last confirmed 9 days ago
Retailer 19
-
$8,212 SGD
£5,056 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
cc6bb5e2-29d9-4b15-b6e9-c31a2874d219 · Sep 25
$8,938 SGD
$6,989 USD
View
Price last confirmed 38 days ago
19 more retailers have this diamond
Prices start from $3,958 SGDSave up to $2,045 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
$3,958 SGD