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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 $3,053 USD
As of October 31, 2026
Save $3,868 USD (56%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $6,921 USD 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 $3,053 to $6,921, a $3,868 spread on the same certified stone. NZ Jewellers lists it at $6,921. 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
Color
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: $6,921 USD|Low: $2,682 USD|High: $6,921 USD|Avg: $4,098 USD
NZ Jewellers
Retailer 2
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Retailer 11
Retailer 12
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Retailer 26
November 2, 2026
Retailer 12$3,053 USD
Retailer 8$3,130 USD
Retailer 13$3,131 USD
Retailer 11$3,152 USD
Retailer 7$3,194 USD
Retailer 10$3,322 USD
Retailer 24$3,460 USD
Retailer 6$3,599 USD
Retailer 14$3,599 USD
Retailer 9$3,603 USD
Retailer 16$3,647 USD
Retailer 23$3,737 USD
Retailer 25$3,914 USD
Retailer 15$3,930 USD
Retailer 2$4,063 USD
Retailer 5$4,070 USD
Retailer 26$4,070 USD
Retailer 4$4,152 USD
Retailer 3$4,210 USD
Retailer 17$4,252 USD
Retailer 22$4,365 USD
Retailer 19$4,377 USD
Retailer 21$4,883 USD
Retailer 18$5,740 USD
Retailer 20$6,643 USD
NZ Jewellers$6,921 USD

33 data points across 26 retailers

28 retailers$3,053 USD to $6,921 USD

A
Cheapest Retailer
-
$3,053 USD
A
Retailer 2
-
$3,130 USD
View
A
Retailer 3
-
$3,131 USD
View
A
Retailer 4
-
$3,152 USD
View
A
Retailer 5
-
$3,194 USD
View
A
Retailer 6
-
$3,322 USD
View
Final sale: no returns
A
Retailer 7
-
$3,460 USD
View
A
Retailer 8
-
$3,599 USD
View
A
Retailer 9
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$3,599 USD
View
A
Retailer 10
-
$3,603 USD
View
Retailer 11
-
$3,647 USD
View
Price last confirmed 10 days ago
A
Retailer 12
-
$3,737 USD
View
B+
Retailer 13
-
$3,914 USD
View
B+
Retailer 14
-
$3,930 USD
View
B+
Retailer 15
-
$4,035 USD
A$6,208 AUD
View
B+
Retailer 16
-
$4,063 USD
£3,200 GBP
View
B+
Retailer 17
-
$4,070 USD
View
B+
Retailer 18
-
$4,070 USD
View
B+
Retailer 19
-
$4,152 USD
View
B+
Retailer 20
-
$4,210 USD
View
B+
Retailer 21
-
$4,252 USD
View
B+
Retailer 22
-
$4,365 USD
€4,157 EUR
View
Retailer 23
-
$4,377 USD
A$6,733 AUD
View
Price last confirmed 29 days ago
Retailer 24
-
$4,496 USD
View
Price last confirmed 56 days ago
B+
Retailer 25
-
$4,883 USD
ZAR 78,880 ZAR
View
B
Retailer 26
-
$5,740 USD
View
B
Retailer 27
-
$6,643 USD
£5,231 GBP
View
Most Expensive
B
NZ Jewellers
ab8e341f-9ded-4f5f-a81b-1fa39f0abccc · Oct 30
$6,921 USD
View
27 more retailers have this diamond
Prices start from $3,053 USDSave up to $3,868 USD

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
$3,053 USD