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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 $3,665 CAD
HK$20,500 HKD
As of October 31, 2026
Save $4,868 CAD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,534 CAD 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 $3,665 to $8,534, a $4,868 spread on the same certified stone. NZ Jewellers lists it at $8,534. 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: $8,534 CAD|Low: $3,630 CAD|High: $8,787 CAD|Avg: $5,379 CAD|-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$3,665 CAD
Retailer 12$3,770 CAD
Retailer 3$4,090 CAD
Retailer 11$4,512 CAD
Retailer 16$4,512 CAD
Retailer 17$4,520 CAD
Retailer 5$4,898 CAD
Retailer 15$4,898 CAD
Retailer 6$5,085 CAD
Retailer 4$5,086 CAD
Retailer 7$5,231 CAD
Retailer 9$5,449 CAD
Retailer 8$5,541 CAD
Retailer 14$5,652 CAD
Retailer 2$6,020 CAD
Retailer 13$8,235 CAD
NZ Jewellers$8,534 CAD

37 data points across 17 retailers

18 retailers$3,665 CAD to $8,534 CAD

A
Cheapest Retailer
-
$3,665 CAD
HK$20,500 HKD
A
Retailer 2
-
$3,770 CAD
₹257,058 INR
View
B+
Retailer 3
-
$4,090 CAD
A$4,504 AUD
View
B+
Retailer 4
-
$4,512 CAD
$3,230 USD
View
B+
Retailer 5
-
$4,512 CAD
$3,230 USD
View
B+
Retailer 6
-
$4,520 CAD
$3,236 USD
View
Final sale: no returns
B+
Retailer 7
-
$4,783 CAD
A$5,268 AUD
View
B+
Retailer 8
-
$4,898 CAD
$3,506 USD
View
B+
Retailer 9
-
$4,898 CAD
$3,506 USD
View
B+
Retailer 10
-
$5,085 CAD
SGD 4,919 SGD
View
B+
Retailer 11
-
$5,086 CAD
$3,641 USD
View
B+
Retailer 12
-
$5,231 CAD
$3,745 USD
View
Retailer 13
-
$5,449 CAD
A$6,001 AUD
View
Price last confirmed 23 days ago
Retailer 14
-
$5,541 CAD
€3,778 EUR
View
Price last confirmed 9 days ago
B+
Retailer 15
-
$5,652 CAD
$4,046 USD
View
B+
Retailer 16
-
$6,020 CAD
ZAR 69,625 ZAR
View
B+
Retailer 17
-
$8,235 CAD
£4,642 GBP
View
Most Expensive
B
NZ Jewellers
82aab777-aac8-4ee4-a9b1-3ad464c35c27 · Oct 27
$8,534 CAD
$6,109 USD
View
17 more retailers have this diamond
Prices start from $3,665 CADSave up to $4,868 CAD

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
$3,665 CAD