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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 €4,690 EUR
HK$41,100 HKD
As of November 1, 2026
Save €5,959 EUR (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €10,649 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 €4,690 to €10,649, a €5,959 spread on the same certified stone. NZ Jewellers lists it at €10,649. 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
Colour
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: €10,649 EUR|Low: €4,617 EUR|High: €10,649 EUR|Avg: €6,564 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 2, 2026
Retailer 13€4,690 EUR
Retailer 16€4,712 EUR
Retailer 5€5,031 EUR
Retailer 7€5,324 EUR
Retailer 3€5,769 EUR
Retailer 6€5,769 EUR
Retailer 15€5,769 EUR
Retailer 11€6,065 EUR
Retailer 10€6,332 EUR
Retailer 8€6,410 EUR
Retailer 17€6,410 EUR
Retailer 14€6,624 EUR
Retailer 4€6,656 EUR
Retailer 9€7,018 EUR
Retailer 2€7,689 EUR
Retailer 12€9,381 EUR
NZ Jewellers€10,649 EUR

38 data points across 17 retailers

17 retailers€4,690 EUR to €10,649 EUR

A
Cheapest Retailer
-
€4,690 EUR
HK$41,100 HKD
A
Retailer 2
-
€4,712 EUR
$5,285 USD
View
B+
Retailer 3
-
€5,031 EUR
$5,643 USD
View
B+
Retailer 4
-
€5,324 EUR
$5,971 USD
View
Final sale: no returns
B+
Retailer 5
-
€5,769 EUR
$6,470 USD
View
B+
Retailer 6
-
€5,769 EUR
$6,470 USD
View
B+
Retailer 7
-
€5,769 EUR
$6,470 USD
View
B+
Retailer 8
-
€6,065 EUR
£5,357 GBP
View
B+
Retailer 9
-
€6,332 EUR
View
B
Retailer 10
-
€6,410 EUR
$7,190 USD
View
B+
Retailer 11
-
€6,410 EUR
$7,190 USD
View
B
Retailer 12
-
€6,624 EUR
$7,430 USD
View
B
Retailer 13
-
€6,656 EUR
$7,465 USD
View
Retailer 14
-
€7,018 EUR
$7,871 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
€7,689 EUR
£6,791 GBP
View
B
Retailer 16
-
€9,381 EUR
£8,285 GBP
View
Most Expensive
B
NZ Jewellers
1b7dad14-d83a-4a6a-990d-39a4c693f98f · Oct 30
€10,649 EUR
$11,944 USD
View
16 more retailers have this diamond
Prices start from €4,690 EURSave up to €5,959 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
€4,690 EUR