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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2557586665

Certificate GIA 2557586665

Diamond specifications and retailer prices

From €4,709 EUR
HK$41,100 HKD
As of November 1, 2026
Save €5,982 EUR (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €10,691 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557586665. Listed at 17 retailers as of October 30, 2026, with prices from €4,709 to €10,691, a €5,982 spread on the same certified stone. NZ Jewellers lists it at €10,691. 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557586665
Dimensions7.25 × 7.31 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle
Top View
7.25 mm7.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557586665
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.7%

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: €10,691 EUR|Low: €4,635 EUR|High: €10,691 EUR|Avg: €6,612 EUR
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
Retailer 17
November 1, 2026
Retailer 12€4,709 EUR
Retailer 16€4,731 EUR
Retailer 5€5,051 EUR
Retailer 7€5,345 EUR
Retailer 3€5,791 EUR
Retailer 6€5,791 EUR
Retailer 15€5,791 EUR
Retailer 11€6,089 EUR
Retailer 13€6,385 EUR
Retailer 8€6,436 EUR
Retailer 17€6,436 EUR
Retailer 14€6,651 EUR
Retailer 4€6,682 EUR
Retailer 9€7,045 EUR
Retailer 2€7,720 EUR
Retailer 10€9,418 EUR
NZ Jewellers€10,691 EUR

38 data points across 17 retailers

17 retailers€4,709 EUR to €10,691 EUR

A
Cheapest Retailer
-
€4,709 EUR
HK$41,100 HKD
A
Retailer 2
-
€4,731 EUR
$5,285 USD
View
B+
Retailer 3
-
€5,051 EUR
$5,643 USD
View
B+
Retailer 4
-
€5,345 EUR
$5,971 USD
View
Final sale: no returns
B+
Retailer 5
-
€5,791 EUR
$6,470 USD
View
B+
Retailer 6
-
€5,791 EUR
$6,470 USD
View
B+
Retailer 7
-
€5,791 EUR
$6,470 USD
View
B+
Retailer 8
-
€6,089 EUR
£5,357 GBP
View
B+
Retailer 9
-
€6,385 EUR
View
B
Retailer 10
-
€6,436 EUR
$7,190 USD
View
B+
Retailer 11
-
€6,436 EUR
$7,190 USD
View
B
Retailer 12
-
€6,651 EUR
$7,430 USD
View
B
Retailer 13
-
€6,682 EUR
$7,465 USD
View
Retailer 14
-
€7,045 EUR
$7,871 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
€7,720 EUR
£6,791 GBP
View
B
Retailer 16
-
€9,418 EUR
£8,285 GBP
View
Most Expensive
B
NZ Jewellers
1b7dad14-d83a-4a6a-990d-39a4c693f98f · Oct 30
€10,691 EUR
$11,944 USD
View
16 more retailers have this diamond
Prices start from €4,709 EURSave up to €5,982 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 Round
€4,709 EUR