Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

ID • E/SI2 • GIA 6233751025

Certificate GIA 6233751025

Diamond specifications and retailer prices

From $5,099 USD
£4,015 GBP
As of October 29, 2026
Save $3,900 USD (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,999 USD at NZ Jewellers · As of October 27, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233751025. Listed at 6 retailers as of October 27, 2026, with prices from $5,099 to $8,999, a $3,900 spread on the same certified stone. NZ Jewellers lists it at $8,999. 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
E
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle44.54°
Pavilion angle31.45°
OriginNatural
Grading LabGIA
CertificateGIA 6233751025
Dimensions7.38 × 5.68 × 3.86 mm
L/W Ratio1.30
Top View
7.38 mm5.68 mm1.51 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233751025
Side View
Table 67.0%Crown 44.54°Girdle: STK-THKPavilion 31.45°Culet: NoneDepth 67.9%

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 29
Current: $8,999 USD|Low: $4,833 USD|High: $9,136 USD|Avg: $6,424 USD|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8$4,833 USD
Retailer 2$5,099 USD
Retailer 5$5,380 USD
Retailer 7$5,380 USD
Retailer 6$5,500 USD
Retailer 9$5,715 USD
Retailer 3$6,020 USD
Retailer 10$6,117 USD
Retailer 11$8,074 USD
Retailer 4$8,616 USD
NZ Jewellers$8,999 USD

28 data points across 11 retailers

6 retailers$5,099 USD to $8,999 USD

A
Cheapest Retailer
-
$5,099 USD
£4,015 GBP
A
Retailer 2
-
$5,380 USD
View
A
Retailer 3
-
$5,380 USD
View
A
Retailer 4
-
$5,500 USD
View
B+
Retailer 5
-
$8,616 USD
£6,784 GBP
View
Most Expensive
B+
NZ Jewellers
00748c62-3f1a-4e06-8ebe-5455db0be285 · Oct 27
$8,999 USD
View
5 more retailers have this diamond
Prices start from $5,099 USDSave up to $3,900 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
$5,099 USD