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Oval|Natural|GIA

0.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 1549594994

Certificate GIA 1549594994

Diamond specifications and retailer prices

From $271 USD
As of November 6, 2026
Save $596 USD (69%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $867 USD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549594994. Listed at 5 retailers as of November 4, 2026, with prices from $271 to $867, a $596 spread on the same certified stone. MOH London lists it at $867. 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

0.51
Carat
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549594994
Dimensions6.33 × 4.56 × 2.71 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
6.33 mm4.56 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1549594994
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $867 USD|Low: $271 USD|High: $872 USD|Avg: $483 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2$271 USD
Retailer 3$484 USD
Retailer 4$578 USD
MOH London$867 USD

30 data points across 4 retailers

5 retailers$271 USD to $867 USD

A
Cheapest Retailer
-
$271 USD
Retailer 2
-
$395 USD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$484 USD
View
B+
Retailer 4
-
$578 USD
View
Most Expensive
B
MOH London
911ED6DA0 · Nov 4
$867 USD
£683 GBP
View
4 more retailers have this diamond
Prices start from $271 USDSave up to $596 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
0.51ct Oval
$271 USD