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Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 3565226453

Certificate GIA 3565226453

Diamond specifications and retailer prices

From £659 GBP
As of November 2, 2026
6 retailers carry this diamond
Most expensive: £659 GBP at 77 Diamonds
View at 77 Diamonds

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3565226453. Listed at 6 retailers as of November 2, 2026. 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
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3565226453
Dimensions7.82 × 4.16 × 2.56 mm
L/W Ratio1.88
Culet sizeNone
Top View
7.82 mm4.16 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3565226453
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £659 GBP|Low: £434 GBP|High: £760 GBP|Avg: £572 GBP|+12.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4£434 GBP
Retailer 8£448 GBP
Retailer 9£455 GBP
Retailer 2£527 GBP
Retailer 3£565 GBP
Retailer 10£614 GBP
Retailer 7£637 GBP
Retailer 6£650 GBP
77 Diamonds£659 GBP
Retailer 5£752 GBP

27 data points across 10 retailers

6 retailers

Retailer 1
-
£434 GBP
SGD 786 SGD
Price last confirmed 22 days ago
Retailer 2
-
£455 GBP
$610 USD
View
Price last confirmed 29 days ago
Retailer 3
-
£527 GBP
View
Price last confirmed 21 days ago
Retailer 4
-
£565 GBP
$757 USD
View
Price last confirmed 23 days ago
Retailer 5
-
£650 GBP
$871 USD
View
Price last confirmed 23 days ago
Most Expensive
B
77 Diamonds
MQZDMYSQAUE · Nov 2
£659 GBP
View
5 more retailers have this diamond

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 Marquise
£659 GBP