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Oval|Natural|GIA

1.51ct M SI1 Oval Natural Diamond

EX • M/SI1 • GIA 2556084481

Certificate GIA 2556084481

Diamond specifications and retailer prices

From $2,747 NZD
As of November 6, 2026
Save $3,036 NZD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,969 NZD at NZ Jewellers · As of September 25, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556084481. Listed at 8 retailers as of November 6, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2556084481
Dimensions8.94 × 6.36 × 4.04 mm
L/W Ratio1.41
Top View
8.94 mm6.36 mm1.51 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2556084481
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.5%

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 6
Current: $5,783 NZD|Low: $2,747 NZD|High: $6,269 NZD|Avg: $4,344 NZD|-7.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$2,747 NZD
Retailer 8$3,388 NZD
Retailer 6$3,649 NZD
Retailer 3$3,918 NZD
Retailer 4$3,978 NZD
Retailer 9$4,333 NZD
Retailer 2$4,825 NZD
Retailer 5$5,147 NZD
Retailer 1$5,783 NZD

30 data points across 9 retailers

8 retailers$2,747 NZD to $5,783 NZD

A
Cheapest Retailer
-
$2,747 NZD
A
Retailer 2
-
$3,649 NZD
View
Final sale: no returns
A
Retailer 3
-
$3,918 NZD
View
A
Retailer 4
-
$3,978 NZD
View
B+
Retailer 5
-
$4,825 NZD
View
B+
Retailer 6
-
$5,147 NZD
View
B
Retailer 7
-
$5,783 NZD
View
Most Expensive
NZ Jewellers
4d8cfb91-c3d0-48b1-be66-8814a485524b · Sep 25
$8,969 NZD
$4,972 USD
View
Price last confirmed 42 days ago
7 more retailers have this diamond
Prices start from $2,747 NZDSave up to $3,036 NZD

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
$2,747 NZD