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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2235951484

Certificate GIA 2235951484

Diamond specifications and retailer prices

From $4,900 USD
As of November 1, 2026
Save $5,591 USD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,491 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 2235951484. Listed at 22 retailers as of October 30, 2026, with prices from $4,900 to $10,491, a $5,591 spread on the same certified stone. NZ Jewellers lists it at $10,491. 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
FluorescenceMedium
Crown angle44.08°
OriginNatural
Grading LabGIA
CertificateGIA 2235951484
Dimensions7.91 × 5.75 × 3.89 mm
L/W Ratio1.38
Top View
7.91 mm5.75 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2235951484
Side View
Table 65.0%Crown 44.08°Girdle: Slightly ThickPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $10,491 USD|Low: $4,956 USD|High: $10,491 USD|Avg: $6,550 USD
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
November 2, 2026
Retailer 11$4,956 USD
Retailer 4$5,289 USD
Retailer 13$5,289 USD
Retailer 12$5,310 USD
Retailer 3$5,682 USD
Retailer 6$5,682 USD
Retailer 14$5,682 USD
Retailer 5$5,990 USD
Retailer 7$6,017 USD
Retailer 10$6,201 USD
Retailer 2$6,470 USD
Retailer 8$7,707 USD
Retailer 9$9,290 USD
NZ Jewellers$10,491 USD

44 data points across 14 retailers

22 retailers$4,900 USD to $10,491 USD

B+
Cheapest Retailer
-
$4,900 USD
B+
Retailer 2
-
$4,956 USD
View
B
Retailer 3
-
$5,160 USD
A$7,938 AUD
View
B
Retailer 4
-
$5,289 USD
CA$7,346 CAD
View
B
Retailer 5
-
$5,289 USD
View
B
Retailer 6
-
$5,310 USD
View
B
Retailer 7
-
$5,682 USD
View
B
Retailer 8
-
$5,682 USD
View
B
Retailer 9
-
$5,682 USD
View
B
Retailer 10
-
$5,990 USD
View
B
Retailer 11
-
$6,017 USD
£4,738 GBP
View
Retailer 12
-
$6,201 USD
A$9,539 AUD
View
Price last confirmed 22 days ago
B
Retailer 13
-
$6,340 USD
View
B
Retailer 14
-
$6,340 USD
View
B
Retailer 15
-
$6,427 USD
View
B
Retailer 16
-
$6,470 USD
€6,162 EUR
View
B
Retailer 17
-
$6,550 USD
View
B
Retailer 18
-
$6,557 USD
View
Retailer 19
-
$6,916 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$7,707 USD
ZAR 124,500 ZAR
View
B
Retailer 21
-
$9,290 USD
£7,315 GBP
View
Most Expensive
B
NZ Jewellers
ce8079b4-efe5-4bf1-8854-70654ab1cd25 · Oct 30
$10,491 USD
View
21 more retailers have this diamond
Prices start from $4,900 USDSave up to $5,591 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.

B+
1.51ct Radiant
$4,900 USD