Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2557187780

Certificate GIA 2557187780

Diamond specifications and retailer prices

From $5,471 CAD
HK$30,600 HKD
As of October 31, 2026
Save $6,997 CAD (56%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,469 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557187780. Listed at 11 retailers as of October 30, 2026, with prices from $5,471 to $12,469, a $6,997 spread on the same certified stone. NZ Jewellers lists it at $12,469. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557187780
Dimensions8.84 × 6.32 × 4.10 mm
L/W Ratio1.40
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
8.84 mm6.32 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557187780
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.8%

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: $12,469 CAD|Low: $5,418 CAD|High: $13,312 CAD|Avg: $8,086 CAD|-6.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4$5,471 CAD
Retailer 6$6,265 CAD
Retailer 2$6,563 CAD
Retailer 8$6,793 CAD
Retailer 11$6,961 CAD
Retailer 3$6,997 CAD
Retailer 7$7,455 CAD
Retailer 9$7,455 CAD
Retailer 5$8,422 CAD
Retailer 10$11,890 CAD
NZ Jewellers$12,469 CAD

41 data points across 11 retailers

11 retailers$5,471 CAD to $12,469 CAD

A
Cheapest Retailer
-
$5,471 CAD
HK$30,600 HKD
A
Retailer 2
-
$6,265 CAD
€4,271 EUR
View
A
Retailer 3
-
$6,563 CAD
$4,698 USD
View
A
Retailer 4
-
$6,793 CAD
$4,863 USD
View
A
Retailer 5
-
$6,961 CAD
SGD 6,734 SGD
View
A
Retailer 6
-
$6,997 CAD
$5,009 USD
View
Final sale: no returns
A
Retailer 7
-
$7,455 CAD
$5,337 USD
View
B+
Retailer 8
-
$7,455 CAD
$5,337 USD
View
B+
Retailer 9
-
$8,422 CAD
€5,742 EUR
View
B
Retailer 10
-
$11,890 CAD
£6,702 GBP
View
Most Expensive
B
NZ Jewellers
5b2d960c-fe95-4daa-a8f4-fc95cf67fffe · Oct 30
$12,469 CAD
$8,926 USD
View
10 more retailers have this diamond
Prices start from $5,471 CADSave up to $6,997 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 Oval
$5,471 CAD