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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

EX • E/SI2 • GIA 6551551304

Certificate GIA 6551551304

Diamond specifications and retailer prices

From €3,666 EUR
HK$32,000 HKD
As of November 1, 2026
Save €4,575 EUR (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €8,242 EUR at Queensmith · As of October 28, 2026
View at Queensmith

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 6551551304. Listed at 17 retailers as of October 28, 2026, with prices from €3,666 to €8,242, a €4,575 spread on the same certified stone. Queensmith lists it at €8,242. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551551304
Dimensions7.68 × 5.89 × 4.08 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Knot, Cavity, Needle
Top View
7.68 mm5.89 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551551304
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.2%

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: €8,242 EUR|Low: €3,666 EUR|High: €8,276 EUR|Avg: €5,375 EUR|+2.4%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6€3,666 EUR
Retailer 2€3,919 EUR
Retailer 8€4,293 EUR
Retailer 10€4,463 EUR
Retailer 9€4,517 EUR
Retailer 5€4,775 EUR
Retailer 3€4,894 EUR
Retailer 11€5,032 EUR
Retailer 7€5,539 EUR
Retailer 4€7,795 EUR
Queensmith€8,242 EUR

34 data points across 11 retailers

17 retailers€3,666 EUR to €8,242 EUR

A
Cheapest Retailer
-
€3,666 EUR
HK$32,000 HKD
A
Retailer 2
-
€3,919 EUR
₹416,976 INR
View
A
Retailer 3
-
€4,293 EUR
SGD 6,481 SGD
View
A
Retailer 4
-
€4,463 EUR
$4,986 USD
View
A
Retailer 5
-
€4,517 EUR
$5,046 USD
View
Final sale: no returns
A
Retailer 6
-
€4,666 EUR
SGD 7,045 SGD
View
A
Retailer 7
-
€4,775 EUR
£4,201 GBP
View
Retailer 8
-
€4,894 EUR
$5,468 USD
View
Price last confirmed 24 days ago
Retailer 9
-
€4,894 EUR
$5,468 USD
View
Price last confirmed 31 days ago
Retailer 10
-
€4,894 EUR
$5,468 USD
View
Price last confirmed 24 days ago
A
Retailer 11
-
€5,032 EUR
$5,621 USD
View
A
Retailer 12
-
€5,066 EUR
A$8,708 AUD
View
A
Retailer 13
-
€5,539 EUR
View
Retailer 14
-
€5,647 EUR
$6,309 USD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
€7,795 EUR
£6,857 GBP
View
Retailer 16
-
€8,186 EUR
$9,145 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Queensmith
6551551304 · Oct 28
€8,242 EUR
£7,250 GBP
View
16 more retailers have this diamond
Prices start from €3,666 EURSave up to €4,575 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