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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 €3,655 EUR
HK$31,900 HKD
As of October 30, 2026
Save €4,084 EUR (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €7,739 EUR 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 €3,655 to €7,739, a €4,084 spread on the same certified stone. MOH London lists it at €7,739. 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
Colour
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 30
Current: €7,739 EUR|Low: €3,655 EUR|High: €8,955 EUR|Avg: €5,213 EUR|-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 30, 2026
Retailer 10€3,655 EUR
Retailer 8€3,941 EUR
Retailer 9€4,138 EUR
Retailer 7€4,299 EUR
Retailer 11€4,368 EUR
Retailer 3€4,394 EUR
Retailer 13€4,404 EUR
Retailer 2€4,630 EUR
Retailer 5€4,921 EUR
Retailer 6€5,661 EUR
Retailer 12€7,681 EUR
MOH London€7,739 EUR
Retailer 4€8,468 EUR

40 data points across 13 retailers

12 retailers€3,655 EUR to €7,739 EUR

A
Cheapest Retailer
-
€3,655 EUR
HK$31,900 HKD
A
Retailer 2
-
€3,941 EUR
$4,403 USD
View
A
Retailer 3
-
€4,138 EUR
$4,623 USD
View
A
Retailer 4
-
€4,299 EUR
$4,803 USD
View
A
Retailer 5
-
€4,368 EUR
$4,880 USD
View
Final sale: no returns
A
Retailer 6
-
€4,394 EUR
$4,909 USD
View
A
Retailer 7
-
€4,404 EUR
$4,920 USD
View
A
Retailer 8
-
€4,630 EUR
£4,073 GBP
View
A
Retailer 9
-
€4,921 EUR
A$8,458 AUD
View
A
Retailer 10
-
€5,661 EUR
View
B+
Retailer 11
-
€7,681 EUR
$8,581 USD
View
Most Expensive
B+
MOH London
C9FCA304D · Oct 29
€7,739 EUR
£6,808 GBP
View
11 more retailers have this diamond
Prices start from €3,655 EURSave up to €4,084 EUR

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
€3,655 EUR