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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 2557750890

Certificate GIA 2557750890

Diamond specifications and retailer prices

From €2,340 EUR
HK$20,500 HKD
As of October 31, 2026
Save €3,107 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €5,447 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 €2,340 to €5,447, a €3,107 spread on the same certified stone. NZ Jewellers lists it at €5,447. 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
Colour
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: €5,447 EUR|Low: €2,317 EUR|High: €5,608 EUR|Avg: €3,433 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€2,340 EUR
Retailer 12€2,406 EUR
Retailer 3€2,610 EUR
Retailer 11€2,880 EUR
Retailer 16€2,880 EUR
Retailer 17€2,885 EUR
Retailer 5€3,126 EUR
Retailer 15€3,126 EUR
Retailer 6€3,245 EUR
Retailer 4€3,246 EUR
Retailer 7€3,339 EUR
Retailer 9€3,478 EUR
Retailer 8€3,537 EUR
Retailer 14€3,607 EUR
Retailer 2€3,843 EUR
Retailer 13€5,256 EUR
NZ Jewellers€5,447 EUR

37 data points across 17 retailers

18 retailers€2,340 EUR to €5,447 EUR

A
Cheapest Retailer
-
€2,340 EUR
HK$20,500 HKD
A
Retailer 2
-
€2,406 EUR
₹257,058 INR
View
B+
Retailer 3
-
€2,610 EUR
A$4,504 AUD
View
B+
Retailer 4
-
€2,880 EUR
$3,230 USD
View
B+
Retailer 5
-
€2,880 EUR
$3,230 USD
View
B+
Retailer 6
-
€2,885 EUR
$3,236 USD
View
Final sale: no returns
B+
Retailer 7
-
€3,053 EUR
A$5,268 AUD
View
B+
Retailer 8
-
€3,126 EUR
$3,506 USD
View
B+
Retailer 9
-
€3,126 EUR
$3,506 USD
View
B+
Retailer 10
-
€3,245 EUR
SGD 4,919 SGD
View
B+
Retailer 11
-
€3,246 EUR
$3,641 USD
View
B+
Retailer 12
-
€3,339 EUR
$3,745 USD
View
Retailer 13
-
€3,478 EUR
A$6,001 AUD
View
Price last confirmed 24 days ago
Retailer 14
-
€3,537 EUR
View
Price last confirmed 10 days ago
B+
Retailer 15
-
€3,607 EUR
$4,046 USD
View
B+
Retailer 16
-
€3,843 EUR
ZAR 69,625 ZAR
View
B+
Retailer 17
-
€5,256 EUR
£4,642 GBP
View
Most Expensive
B
NZ Jewellers
82aab777-aac8-4ee4-a9b1-3ad464c35c27 · Oct 27
€5,447 EUR
$6,109 USD
View
17 more retailers have this diamond
Prices start from €2,340 EURSave up to €3,107 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
€2,340 EUR