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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

EX • E/SI2 • GIA 6555434666

Certificate GIA 6555434666

Diamond specifications and retailer prices

From $4,083 USD
HK$31,900 HKD
As of October 29, 2026
Save $4,563 USD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,646 USD at MOH London · As of October 29, 2026
View at MOH London

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 6555434666. Listed at 12 retailers as of October 29, 2026, with prices from $4,083 to $8,646, a $4,563 spread on the same certified stone. MOH London lists it at $8,646. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555434666
Dimensions7.66 × 5.66 × 3.83 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.66 mm5.66 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555434666
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $8,646 USD|Low: $4,083 USD|High: $10,005 USD|Avg: $5,874 USD|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 10$4,083 USD
Retailer 8$4,403 USD
Retailer 9$4,623 USD
Retailer 7$4,803 USD
Retailer 11$4,880 USD
Retailer 3$4,909 USD
Retailer 13$4,920 USD
Retailer 2$5,157 USD
Retailer 5$5,498 USD
Retailer 6$6,324 USD
Retailer 12$8,581 USD
MOH London$8,646 USD
Retailer 4$9,460 USD

40 data points across 13 retailers

12 retailers$4,083 USD to $8,646 USD

A
Cheapest Retailer
-
$4,083 USD
HK$31,900 HKD
A
Retailer 2
-
$4,403 USD
View
A
Retailer 3
-
$4,623 USD
View
A
Retailer 4
-
$4,803 USD
View
A
Retailer 5
-
$4,880 USD
View
Final sale: no returns
A
Retailer 6
-
$4,909 USD
View
A
Retailer 7
-
$4,920 USD
View
A
Retailer 8
-
$5,157 USD
£4,061 GBP
View
A
Retailer 9
-
$5,498 USD
A$8,458 AUD
View
A
Retailer 10
-
$6,324 USD
€6,023 EUR
View
B+
Retailer 11
-
$8,581 USD
View
Most Expensive
B+
MOH London
C9FCA304D · Oct 29
$8,646 USD
£6,808 GBP
View
11 more retailers have this diamond
Prices start from $4,083 USDSave up to $4,563 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
$4,083 USD