Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6515880819

Certificate GIA 6515880819

Diamond specifications and retailer prices

From $560 USD
₹53,369 INR
As of November 1, 2026
Save $1,803 USD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,363 USD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6515880819. Listed at 19 retailers as of October 30, 2026, with a 322% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6515880819
Dimensions6.06 × 4.38 × 2.83 mm
L/W Ratio1.38
Top View
6.06 mm4.38 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515880819
Side View
Table 56.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 64.8%

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 1
Current: $560 USD|Low: $480 USD|High: $2,211 USD|Avg: $886 USD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 1$560 USD
Retailer 8$695 USD
Retailer 7$750 USD
Retailer 5$754 USD
Retailer 6$765 USD
Retailer 2$905 USD
Retailer 4$1,068 USD
Retailer 3$1,380 USD

41 data points across 8 retailers

19 retailers$560 USD to $2,363 USD

A
Cheapest Retailer
-
$560 USD
₹53,369 INR
Retailer 2
-
$576 USD
HK$4,500 HKD
View
Price last confirmed 58 days ago
A
Retailer 3
-
$695 USD
View
Final sale: no returns
Retailer 4
-
$750 USD
View
Price last confirmed 14 days ago
Retailer 5
-
$754 USD
View
Price last confirmed 17 days ago
Retailer 6
-
$754 USD
View
Price last confirmed 40 days ago
Retailer 7
-
$754 USD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$765 USD
View
Retailer 9
-
$870 USD
View
Price last confirmed 62 days ago
B+
Retailer 10
-
$870 USD
View
B+
Retailer 11
-
$870 USD
View
Retailer 12
-
$870 USD
View
Price last confirmed 40 days ago
B+
Retailer 13
-
$886 USD
View
B+
Retailer 14
-
$905 USD
£713 GBP
View
B+
Retailer 15
-
$1,068 USD
€1,017 EUR
View
B
Retailer 16
-
$1,380 USD
£1,087 GBP
View
Retailer 17
-
$2,363 USD
View
Price last confirmed 63 days ago
B
Retailer 18
-
$2,363 USD
View
Most Expensive
NZ Jewellers
5c901296-fa06-4366-952c-65f9f4a66f32 · Sep 19
$2,363 USD
View
Price last confirmed 43 days ago
18 more retailers have this diamond
Prices start from $560 USDSave up to $1,803 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
$560 USD