Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 5566006502

Certificate GIA 5566006502

Diamond specifications and retailer prices

From €5,789 EUR
$6,493 USD
As of November 1, 2026
Save €3,746 EUR (39%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €11,443 EUR at NZ Jewellers · As of October 21, 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 G 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 5566006502. Listed at 16 retailers as of November 1, 2026, with a 65% 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.91°
OriginNatural
Grading LabGIA
CertificateGIA 5566006502
Dimensions7.85 × 5.79 × 3.86 mm
L/W Ratio1.36
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.85 mm5.79 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566006502
Side View
Table 67.0%Crown 47.91°GirdlePavilionCulet: NoneDepth 66.7%

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: €11,443 EUR|Low: €5,789 EUR|High: €11,895 EUR|Avg: €7,382 EUR|-3.8%
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
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 3€5,789 EUR
Retailer 6€5,966 EUR
Retailer 13€6,312 EUR
Retailer 5€6,314 EUR
Retailer 2€6,446 EUR
Retailer 10€6,450 EUR
Retailer 8€6,565 EUR
Retailer 16€6,596 EUR
Retailer 7€6,841 EUR
Retailer 15€6,946 EUR
Retailer 14€6,987 EUR
Retailer 9€7,474 EUR
Retailer 4€7,894 EUR
Retailer 12€8,406 EUR
Retailer 11€9,535 EUR
NZ Jewellers€11,443 EUR

25 data points across 16 retailers

16 retailers€5,789 EUR to €9,535 EUR

A
Cheapest Retailer
-
€5,789 EUR
$6,493 USD
A
Retailer 2
-
€5,966 EUR
$6,692 USD
View
B+
Retailer 3
-
€6,312 EUR
$7,080 USD
View
B+
Retailer 4
-
€6,314 EUR
$7,082 USD
View
Final sale: no returns
B+
Retailer 5
-
€6,446 EUR
£5,693 GBP
View
B+
Retailer 6
-
€6,450 EUR
£5,697 GBP
View
Retailer 7
-
€6,565 EUR
$7,363 USD
View
Price last confirmed 17 days ago
Retailer 8
-
€6,596 EUR
A$11,382 AUD
View
Price last confirmed 11 days ago
Retailer 9
-
€6,841 EUR
$7,673 USD
View
Price last confirmed 11 days ago
Retailer 10
-
€6,946 EUR
$7,791 USD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
€6,987 EUR
$7,837 USD
View
B+
Retailer 12
-
€7,474 EUR
View
Retailer 13
-
€7,894 EUR
$8,854 USD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
€8,406 EUR
ZAR 152,310 ZAR
View
B
Retailer 15
-
€9,535 EUR
£8,421 GBP
View
Most Expensive
NZ Jewellers
6fae2622-e45e-4ac6-8d72-ae0669f0c512 · Oct 21
€11,443 EUR
$12,834 USD
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from €5,789 EURSave up to €3,746 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
€5,789 EUR