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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1525780219

Certificate GIA 1525780219

Diamond specifications and retailer prices

From €3,502 EUR
$3,912 USD
As of November 2, 2026
Save €4,315 EUR (55%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: €7,817 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 1525780219. Listed at 29 retailers as of October 30, 2026, with prices from €3,502 to €7,817, a €4,315 spread on the same certified stone. NZ Jewellers lists it at €7,817. 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
Crown angle44.97°
Pavilion angle31.5°
OriginNatural
Grading LabGIA
CertificateGIA 1525780219
Dimensions7.21 × 5.69 × 3.91 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.21 mm5.69 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525780219
Side View
Table 66.0%Crown 44.97°Girdle: THK-VTHPavilion 31.5°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €7,817 EUR|Low: €3,027 EUR|High: €7,817 EUR|Avg: €4,568 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 2, 2026
Retailer 11€3,502 EUR
Retailer 8€3,505 EUR
Retailer 22€3,542 EUR
Retailer 7€3,545 EUR
Retailer 12€3,587 EUR
Retailer 10€3,752 EUR
Retailer 24€3,844 EUR
Retailer 9€4,038 EUR
Retailer 16€4,053 EUR
Retailer 6€4,065 EUR
Retailer 14€4,065 EUR
Retailer 23€4,065 EUR
Retailer 25€4,133 EUR
Retailer 15€4,355 EUR
Retailer 13€4,462 EUR
Retailer 5€4,565 EUR
Retailer 26€4,565 EUR
Retailer 17€4,630 EUR
Retailer 18€4,639 EUR
Retailer 4€4,690 EUR
Retailer 3€4,717 EUR
Retailer 2€4,788 EUR
Retailer 21€5,515 EUR
Retailer 19€6,494 EUR
Retailer 20€7,147 EUR
NZ Jewellers€7,817 EUR

40 data points across 26 retailers

29 retailers€3,502 EUR to €7,817 EUR

A
Cheapest Retailer
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€3,502 EUR
$3,912 USD
A
Retailer 2
-
€3,505 EUR
$3,916 USD
View
A
Retailer 3
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€3,542 EUR
$3,958 USD
View
A
Retailer 4
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€3,545 EUR
$3,960 USD
View
A
Retailer 5
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€3,587 EUR
$4,007 USD
View
A
Retailer 6
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€3,707 EUR
A$6,372 AUD
View
A
Retailer 7
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€3,752 EUR
$4,192 USD
View
Final sale: no returns
A
Retailer 8
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€3,844 EUR
$4,295 USD
View
A
Retailer 9
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€4,038 EUR
$4,512 USD
View
Retailer 10
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€4,053 EUR
$4,528 USD
View
Price last confirmed 10 days ago
A
Retailer 11
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€4,065 EUR
$4,541 USD
View
A
Retailer 12
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€4,065 EUR
$4,541 USD
View
A
Retailer 13
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€4,065 EUR
$4,541 USD
View
A
Retailer 14
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€4,133 EUR
$4,617 USD
View
A
Retailer 15
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€4,275 EUR
A$7,348 AUD
View
A
Retailer 16
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€4,355 EUR
$4,865 USD
View
A
Retailer 17
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€4,462 EUR
£3,925 GBP
View
A
Retailer 18
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€4,565 EUR
$5,100 USD
View
A
Retailer 19
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€4,565 EUR
$5,100 USD
View
A
Retailer 20
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€4,630 EUR
$5,173 USD
View
Retailer 21
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€4,639 EUR
A$7,973 AUD
View
Price last confirmed 23 days ago
A
Retailer 22
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€4,690 EUR
$5,240 USD
View
A
Retailer 23
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€4,717 EUR
$5,270 USD
View
A
Retailer 24
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€4,788 EUR
View
Retailer 25
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€4,810 EUR
$5,374 USD
View
Price last confirmed 56 days ago
B+
Retailer 26
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€5,515 EUR
ZAR 99,544 ZAR
View
B
Retailer 27
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€6,494 EUR
$7,255 USD
View
B+
Retailer 28
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€7,147 EUR
£6,287 GBP
View
Most Expensive
B
NZ Jewellers
cde40c29-89bd-459f-8487-001a75435224 · Oct 30
€7,817 EUR
$8,733 USD
View
28 more retailers have this diamond
Prices start from €3,502 EURSave up to €4,315 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
€3,502 EUR