Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1236729301

Certificate GIA 1236729301

Diamond specifications and retailer prices

From $2,703 USD
As of November 2, 2026
Save $3,172 USD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,875 USD at NZ Jewellers · As of November 3, 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 1236729301. Listed at 8 retailers as of November 2, 2026, with prices from $2,703 to $5,875, a $3,172 spread on the same certified stone. NZ Jewellers lists it at $5,875. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle44.89°
Pavilion angle31.06°
OriginNatural
Grading LabGIA
CertificateGIA 1236729301
Dimensions7.31 × 5.60 × 3.89 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.31 mm5.60 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1236729301
Side View
Table 67.0%Crown 44.89°Girdle: ThickPavilion 31.06°Culet: NoneDepth 69.6%

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: Nov 2
Current: $5,875 USD|Low: $2,702 USD|High: $6,119 USD|Avg: $3,590 USD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$2,703 USD
Retailer 5$2,755 USD
Retailer 7$2,810 USD
Retailer 4$2,918 USD
Retailer 6$2,958 USD
Retailer 8$3,180 USD
Retailer 10$3,312 USD
Retailer 9$3,469 USD
Retailer 2$4,923 USD
NZ Jewellers$5,875 USD

35 data points across 10 retailers

8 retailers$2,703 USD to $5,875 USD

A
Cheapest Retailer
-
$2,703 USD
A
Retailer 2
-
$2,755 USD
View
A
Retailer 3
-
$2,810 USD
View
A
Retailer 4
-
$2,918 USD
View
Retailer 5
-
$2,958 USD
View
Price last confirmed 9 days ago
Retailer 6
-
$3,180 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$4,923 USD
View
Most Expensive
B
NZ Jewellers
ba55ec91-1321-4ed6-b548-4f3c073efa7c · Nov 3
$5,875 USD
View
7 more retailers have this diamond
Prices start from $2,703 USDSave up to $3,172 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
$2,703 USD