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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6552916146

Certificate GIA 6552916146

Diamond specifications and retailer prices

From €4,774 EUR
$5,334 USD
As of November 2, 2026
Save €3,878 EUR (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €8,652 EUR at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552916146. Listed at 13 retailers as of October 30, 2026, with prices from €4,774 to €8,652, a €3,878 spread on the same certified stone. NZ Jewellers lists it at €8,652. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552916146
Dimensions7.98 × 5.71 × 3.83 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.98 mm5.71 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552916146
Side View
Table 66.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.2%

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 2
Current: €8,652 EUR|Low: €4,570 EUR|High: €9,035 EUR|Avg: €5,878 EUR|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 4€4,774 EUR
Retailer 2€4,909 EUR
Retailer 3€4,936 EUR
Retailer 7€5,047 EUR
Retailer 10€5,173 EUR
Retailer 12€5,173 EUR
Retailer 13€5,173 EUR
Retailer 5€5,340 EUR
Retailer 6€5,651 EUR
Retailer 11€5,969 EUR
Retailer 9€6,356 EUR
Retailer 8€7,622 EUR
NZ Jewellers€8,652 EUR

26 data points across 13 retailers

13 retailers€4,774 EUR to €8,652 EUR

A
Cheapest Retailer
-
€4,774 EUR
$5,334 USD
Final sale: no returns
A
Retailer 2
-
€4,909 EUR
£4,318 GBP
View
A
Retailer 3
-
€4,936 EUR
$5,515 USD
View
A
Retailer 4
-
€5,047 EUR
£4,439 GBP
View
A
Retailer 5
-
€5,173 EUR
$5,779 USD
View
A
Retailer 6
-
€5,173 EUR
$5,779 USD
View
A
Retailer 7
-
€5,173 EUR
$5,779 USD
View
Retailer 8
-
€5,340 EUR
A$9,179 AUD
View
Price last confirmed 23 days ago
B+
Retailer 9
-
€5,651 EUR
View
B+
Retailer 10
-
€5,969 EUR
$6,669 USD
View
B+
Retailer 11
-
€6,356 EUR
ZAR 114,716 ZAR
View
B
Retailer 12
-
€7,622 EUR
£6,705 GBP
View
Most Expensive
B
NZ Jewellers
fa29a53a-a90a-4ea1-9896-b07372a6fe54 · Oct 30
€8,652 EUR
$9,666 USD
View
12 more retailers have this diamond
Prices start from €4,774 EURSave up to €3,878 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
€4,774 EUR