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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6535513328

Certificate GIA 6535513328

Diamond specifications and retailer prices

From $3,903 SGD
$3,053 USD
As of October 31, 2026
Save $4,945 SGD (56%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $8,848 SGD at NZ Jewellers · As of October 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 6535513328. Listed at 28 retailers as of October 30, 2026, with prices from $3,903 to $8,848, a $4,945 spread on the same certified stone. NZ Jewellers lists it at $8,848. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.83°
Pavilion angle30.94°
OriginNatural
Grading LabGIA
CertificateGIA 6535513328
Dimensions7.22 × 5.66 × 3.94 mm
L/W Ratio1.28
Top View
7.22 mm5.66 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535513328
Side View
Table 65.0%Crown 44.83°Girdle: THK-VTHPavilion 30.94°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,848 SGD|Low: $3,429 SGD|High: $8,848 SGD|Avg: $5,251 SGD
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 2, 2026
Retailer 12$3,903 SGD
Retailer 8$4,001 SGD
Retailer 2$4,002 SGD
Retailer 11$4,030 SGD
Retailer 7$4,083 SGD
Retailer 10$4,247 SGD
Retailer 24$4,423 SGD
Retailer 6$4,601 SGD
Retailer 14$4,601 SGD
Retailer 9$4,606 SGD
Retailer 16$4,662 SGD
Retailer 23$4,777 SGD
Retailer 25$5,004 SGD
Retailer 15$5,024 SGD
Retailer 20$5,195 SGD
Retailer 5$5,203 SGD
Retailer 26$5,203 SGD
Retailer 4$5,308 SGD
Retailer 3$5,382 SGD
Retailer 17$5,436 SGD
Retailer 19$5,595 SGD
Retailer 13$5,597 SGD
Retailer 22$6,242 SGD
Retailer 18$7,339 SGD
Retailer 21$8,493 SGD
NZ Jewellers$8,848 SGD

33 data points across 26 retailers

28 retailers$3,903 SGD to $8,848 SGD

A
Cheapest Retailer
-
$3,903 SGD
$3,053 USD
A
Retailer 2
-
$4,001 SGD
$3,130 USD
View
A
Retailer 3
-
$4,002 SGD
$3,131 USD
View
A
Retailer 4
-
$4,030 SGD
$3,152 USD
View
A
Retailer 5
-
$4,083 SGD
$3,194 USD
View
A
Retailer 6
-
$4,247 SGD
$3,322 USD
View
Final sale: no returns
A
Retailer 7
-
$4,423 SGD
$3,460 USD
View
A
Retailer 8
-
$4,601 SGD
$3,599 USD
View
A
Retailer 9
-
$4,601 SGD
$3,599 USD
View
A
Retailer 10
-
$4,606 SGD
$3,603 USD
View
Retailer 11
-
$4,662 SGD
$3,647 USD
View
Price last confirmed 10 days ago
A
Retailer 12
-
$4,777 SGD
$3,737 USD
View
B+
Retailer 13
-
$5,004 SGD
$3,914 USD
View
B+
Retailer 14
-
$5,024 SGD
$3,930 USD
View
B+
Retailer 15
-
$5,159 SGD
A$6,208 AUD
View
B+
Retailer 16
-
$5,195 SGD
£3,200 GBP
View
B+
Retailer 17
-
$5,203 SGD
$4,070 USD
View
B+
Retailer 18
-
$5,203 SGD
$4,070 USD
View
B+
Retailer 19
-
$5,308 SGD
$4,152 USD
View
B+
Retailer 20
-
$5,382 SGD
$4,210 USD
View
B+
Retailer 21
-
$5,436 SGD
$4,252 USD
View
Retailer 22
-
$5,595 SGD
A$6,733 AUD
View
Price last confirmed 29 days ago
B+
Retailer 23
-
$5,597 SGD
€4,170 EUR
View
Retailer 24
-
$5,748 SGD
$4,496 USD
View
Price last confirmed 56 days ago
B+
Retailer 25
-
$6,242 SGD
ZAR 78,880 ZAR
View
B
Retailer 26
-
$7,339 SGD
$5,740 USD
View
B
Retailer 27
-
$8,493 SGD
£5,231 GBP
View
Most Expensive
B
NZ Jewellers
ab8e341f-9ded-4f5f-a81b-1fa39f0abccc · Oct 30
$8,848 SGD
$6,921 USD
View
27 more retailers have this diamond
Prices start from $3,903 SGDSave up to $4,945 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
$3,903 SGD