Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5563002670

Certificate GIA 5563002670

Diamond specifications and retailer prices

From $650 USD
As of November 6, 2026
Save $429 USD (40%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,079 USD at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H 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 5563002670. Listed at 11 retailers as of November 6, 2026, with prices from $650 to $1,079, a $429 spread on the same certified stone. Frank Darling lists it at $1,079. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.37°
Pavilion angle39.65°
OriginNatural
Grading LabGIA
CertificateGIA 5563002670
Dimensions6.69 × 4.35 × 2.69 mm
L/W Ratio1.54
Culet sizeNone
Top View
6.69 mm4.35 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5563002670
Side View
Table 59.0%Crown 38.37°Girdle: MED-THKPavilion 39.65°Culet: NoneDepth 61.8%

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 6
Current: $1,079 USD|Low: $650 USD|High: $1,118 USD|Avg: $850 USD|-3.5%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$650 USD
Retailer 3$656 USD
Retailer 6$664 USD
Retailer 10$698 USD
Retailer 5$759 USD
Retailer 8$854 USD
Retailer 4$914 USD
Retailer 9$919 USD
Retailer 2$964 USD
Retailer 11$980 USD
Frank Darling$1,079 USD

29 data points across 11 retailers

11 retailers$650 USD to $1,079 USD

A
Cheapest Retailer
-
$650 USD
A
Retailer 2
-
$656 USD
View
B+
Retailer 3
-
$664 USD
View
B+
Retailer 4
-
$698 USD
View
B+
Retailer 5
-
$759 USD
View
B+
Retailer 6
-
$854 USD
View
B
Retailer 7
-
$914 USD
View
B
Retailer 8
-
$919 USD
View
B
Retailer 9
-
$964 USD
View
B
Retailer 10
-
$980 USD
View
Most Expensive
B
Frank Darling
2671124HK · Nov 6
$1,079 USD
View
10 more retailers have this diamond
Prices start from $650 USDSave up to $429 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
$650 USD