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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 €3,666 EUR
HK$32,000 HKD
As of November 1, 2026
Save €3,984 EUR (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €7,681 EUR at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

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 November 1, 2026, with a 109% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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: Nov 1
Current: €3,666 EUR|Low: €3,655 EUR|High: €8,955 EUR|Avg: €5,324 EUR|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 1, 2026
Retailer 1€3,666 EUR
Retailer 10€3,941 EUR
Retailer 11€4,138 EUR
Retailer 9€4,299 EUR
Retailer 7€4,341 EUR
Retailer 4€4,367 EUR
Retailer 2€4,404 EUR
Retailer 6€4,563 EUR
Retailer 8€5,645 EUR
Retailer 5€7,650 EUR
Wholesale Diamonds Direct€7,681 EUR
Retailer 3€8,468 EUR

40 data points across 12 retailers

12 retailers€3,666 EUR to €7,650 EUR

A
Cheapest Retailer
-
€3,666 EUR
HK$32,000 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
-
€4,341 EUR
$4,850 USD
View
Final sale: no returns
A
Retailer 6
-
€4,367 EUR
$4,879 USD
View
A
Retailer 7
-
€4,404 EUR
$4,920 USD
View
A
Retailer 8
-
€4,563 EUR
£4,014 GBP
View
A
Retailer 9
-
€4,921 EUR
A$8,458 AUD
View
A
Retailer 10
-
€5,645 EUR
View
B+
Retailer 11
-
€7,650 EUR
£6,730 GBP
View
Most Expensive
Wholesale Diamonds Direct
253138983 · Oct 23
€7,681 EUR
$8,581 USD
View
Price last confirmed 9 days ago
11 more retailers have this diamond
Prices start from €3,666 EURSave up to €3,984 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
€3,666 EUR