CaratHunter
Plans
Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 2557750890

Certificate GIA 2557750890

Diamond specifications and retailer prices

From €2,349 EUR
HK$20,500 HKD
As of October 31, 2026
Save €3,119 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €5,468 EUR at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 2557750890. Listed at 18 retailers as of October 27, 2026, with prices from €2,349 to €5,468, a €3,119 spread on the same certified stone. NZ Jewellers lists it at €5,468. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle40°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557750890
Dimensions7.00 × 6.92 × 4.67 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.00 mm6.92 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557750890
Side View
Table 57.0%Crown 40°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 67.1%

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: Oct 31
Current: €5,468 EUR|Low: €2,326 EUR|High: €5,630 EUR|Avg: €3,446 EUR|-2.9%
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
October 31, 2026
Retailer 10€2,349 EUR
Retailer 12€2,416 EUR
Retailer 3€2,621 EUR
Retailer 11€2,891 EUR
Retailer 16€2,891 EUR
Retailer 17€2,897 EUR
Retailer 5€3,138 EUR
Retailer 15€3,138 EUR
Retailer 6€3,258 EUR
Retailer 4€3,259 EUR
Retailer 7€3,352 EUR
Retailer 9€3,492 EUR
Retailer 8€3,551 EUR
Retailer 14€3,622 EUR
Retailer 2€3,858 EUR
Retailer 13€5,277 EUR
NZ Jewellers€5,468 EUR

37 data points across 17 retailers

18 retailers€2,349 EUR to €5,468 EUR

A
Cheapest Retailer
-
€2,349 EUR
HK$20,500 HKD
A
Retailer 2
-
€2,416 EUR
₹257,058 INR
View
B+
Retailer 3
-
€2,621 EUR
A$4,504 AUD
View
B+
Retailer 4
-
€2,891 EUR
$3,230 USD
View
B+
Retailer 5
-
€2,891 EUR
$3,230 USD
View
B+
Retailer 6
-
€2,897 EUR
$3,236 USD
View
Final sale: no returns
B+
Retailer 7
-
€3,065 EUR
A$5,268 AUD
View
B+
Retailer 8
-
€3,138 EUR
$3,506 USD
View
B+
Retailer 9
-
€3,138 EUR
$3,506 USD
View
B+
Retailer 10
-
€3,258 EUR
SGD 4,919 SGD
View
B+
Retailer 11
-
€3,259 EUR
$3,641 USD
View
B+
Retailer 12
-
€3,352 EUR
$3,745 USD
View
Retailer 13
-
€3,492 EUR
A$6,001 AUD
View
Price last confirmed 24 days ago
Retailer 14
-
€3,551 EUR
View
Price last confirmed 10 days ago
B+
Retailer 15
-
€3,622 EUR
$4,046 USD
View
B+
Retailer 16
-
€3,858 EUR
ZAR 69,625 ZAR
View
B+
Retailer 17
-
€5,277 EUR
£4,642 GBP
View
Most Expensive
B
NZ Jewellers
82aab777-aac8-4ee4-a9b1-3ad464c35c27 · Oct 27
€5,468 EUR
$6,109 USD
View
17 more retailers have this diamond
Prices start from €2,349 EURSave up to €3,119 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
€2,349 EUR