Oval|Natural|GIA

1.51ct M SI1 Oval Natural Diamond

EX • M/SI1 • GIA 2556084481

Certificate GIA 2556084481

Diamond specifications and retailer prices

From $1,523 USD
As of November 6, 2026
Save $1,683 USD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,972 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,206 USD|Low: $1,523 USD|High: $3,475 USD|Avg: $2,408 USD|-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$1,523 USD
Retailer 8$1,878 USD
Retailer 6$2,023 USD
Retailer 3$2,172 USD
Retailer 4$2,205 USD
Retailer 9$2,402 USD
Retailer 2$2,675 USD
Retailer 5$2,853 USD
Retailer 1$3,206 USD

30 data points across 9 retailers

8 retailers$1,523 USD to $3,206 USD

A
Cheapest Retailer
-
$1,523 USD
A
Retailer 2
-
$2,023 USD
View
Final sale: no returns
A
Retailer 3
-
$2,172 USD
View
A
Retailer 4
-
$2,205 USD
View
B+
Retailer 5
-
$2,675 USD
View
B+
Retailer 6
-
$2,853 USD
View
B
Retailer 7
-
$3,206 USD
View
Most Expensive
NZ Jewellers
4d8cfb91-c3d0-48b1-be66-8814a485524b · Sep 25
$4,972 USD
View
Price last confirmed 42 days ago
7 more retailers have this diamond
Prices start from $1,523 USDSave up to $1,683 USD

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
$1,523 USD