CaratHunter
Plans
Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 1569140330

Certificate GIA 1569140330

Diamond specifications and retailer prices

From £362 GBP
SGD 656 SGD
As of October 31, 2026
Save £353 GBP (49%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £714 GBP at Frank Darling · As of November 2, 2026
View at Frank Darling

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 1569140330. Listed at 9 retailers as of October 31, 2026, with prices from £362 to £714, a £353 spread on the same certified stone. Frank Darling lists it at £714. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1569140330
Dimensions7.61 × 4.11 × 2.69 mm
L/W Ratio1.85
Culet sizeNone
Top View
7.61 mm4.11 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1569140330
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £714 GBP|Low: £362 GBP|High: £734 GBP|Avg: £529 GBP|-2.7%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7£362 GBP
Retailer 8£395 GBP
Retailer 2£410 GBP
Retailer 6£465 GBP
Retailer 5£515 GBP
Retailer 4£562 GBP
Retailer 3£581 GBP
Retailer 9£594 GBP
Frank Darling£714 GBP

38 data points across 9 retailers

9 retailers£362 GBP to £714 GBP

A
Cheapest Retailer
-
£362 GBP
SGD 656 SGD
A
Retailer 2
-
£395 GBP
SGD 717 SGD
View
A
Retailer 3
-
£410 GBP
$550 USD
View
A
Retailer 4
-
£465 GBP
View
A
Retailer 5
-
£515 GBP
$691 USD
View
B+
Retailer 6
-
£562 GBP
€718 EUR
View
B+
Retailer 7
-
£581 GBP
$780 USD
View
B+
Retailer 8
-
£594 GBP
$798 USD
View
Most Expensive
B
Frank Darling
2679426HK · Nov 2
£714 GBP
$958 USD
View
8 more retailers have this diamond
Prices start from £362 GBPSave up to £353 GBP

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 Marquise
£362 GBP