Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

GD • G/SI1 • GIA 1518186849

Certificate GIA 1518186849

Diamond specifications and retailer prices

From $858 USD
As of October 31, 2026
Save $846 USD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,704 USD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1518186849. Listed at 13 retailers as of October 31, 2026, with prices from $858 to $1,704, a $846 spread on the same certified stone. MOH London lists it at $1,704. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
G
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.39°
Pavilion angle39.51°
OriginNatural
Grading LabGIA
CertificateGIA 1518186849
Dimensions6.66 × 4.45 × 2.76 mm
L/W Ratio1.50
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
6.66 mm4.45 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1518186849
Side View
Table 59.0%Crown 38.39°Girdle: MediumPavilion 39.51°Culet: NoneDepth 62.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,704 USD|Low: $787 USD|High: $2,917 USD|Avg: $1,356 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10$858 USD
Retailer 5$930 USD
Retailer 8$966 USD
Retailer 6$1,073 USD
Retailer 9$1,085 USD
Retailer 3$1,156 USD
Retailer 2$1,310 USD
Retailer 11$1,399 USD
Retailer 4$1,436 USD
MOH London$1,704 USD
Retailer 7$2,917 USD

36 data points across 11 retailers

13 retailers$858 USD to $1,704 USD

B
Cheapest Retailer
-
$858 USD
Final sale: no returns
B
Retailer 2
-
$930 USD
View
B
Retailer 3
-
$941 USD
View
B
Retailer 4
-
$966 USD
View
B
Retailer 5
-
$1,064 USD
View
B
Retailer 6
-
$1,073 USD
View
B
Retailer 7
-
$1,085 USD
View
Retailer 8
-
$1,156 USD
£910 GBP
View
Price last confirmed 32 days ago
B
Retailer 9
-
$1,310 USD
€1,248 EUR
View
Retailer 10
-
$1,399 USD
A$2,152 AUD
View
Price last confirmed 28 days ago
B
Retailer 11
-
$1,436 USD
ZAR 23,199 ZAR
View
Most Expensive
C
MOH London
137ACB074 · Nov 1
$1,704 USD
£1,342 GBP
View
11 more retailers have this diamond
Prices start from $858 USDSave up to $846 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.

B
0.51ct Oval
$858 USD