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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 6552531907

Certificate GIA 6552531907

Diamond specifications and retailer prices

From £401 GBP
HK$4,200 HKD
As of November 1, 2026
Save £1,079 GBP (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,480 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6552531907. Listed at 15 retailers as of October 30, 2026, with prices from £401 to £1,480, a £1,079 spread on the same certified stone. NZ Jewellers lists it at £1,480. 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
F
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552531907
Dimensions8.34 × 4.13 × 2.58 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
8.34 mm4.13 mm0.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552531907
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.5%

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: Nov 1
Current: £581 GBP|Low: £401 GBP|High: £1,103 GBP|Avg: £587 GBP|+6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9£401 GBP
Retailer 7£435 GBP
Retailer 10£472 GBP
Retailer 6£484 GBP
Retailer 8£508 GBP
Retailer 2£559 GBP
Retailer 1£581 GBP
Retailer 5£592 GBP
Retailer 4£695 GBP
Retailer 3£1,090 GBP

44 data points across 10 retailers

15 retailers£401 GBP to £1,480 GBP

A
Cheapest Retailer
-
£401 GBP
HK$4,200 HKD
B+
Retailer 2
-
£435 GBP
$584 USD
View
Final sale: no returns
B+
Retailer 3
-
£472 GBP
$633 USD
View
B+
Retailer 4
-
£484 GBP
$649 USD
View
B+
Retailer 5
-
£491 GBP
SGD 891 SGD
View
B+
Retailer 6
-
£508 GBP
$682 USD
View
B+
Retailer 7
-
£508 GBP
$682 USD
View
Retailer 8
-
£545 GBP
$731 USD
View
Price last confirmed 57 days ago
B+
Retailer 9
-
£545 GBP
$731 USD
View
B+
Retailer 10
-
£570 GBP
$765 USD
View
B+
Retailer 11
-
£581 GBP
View
B+
Retailer 12
-
£592 GBP
View
B
Retailer 13
-
£695 GBP
€888 EUR
View
B
Retailer 14
-
£1,090 GBP
View
Most Expensive
C
NZ Jewellers
f0449ea3-d67a-4071-9790-c0195c56378c · Oct 30
£1,480 GBP
$1,986 USD
View
14 more retailers have this diamond
Prices start from £401 GBPSave up to £1,079 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
£401 GBP