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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

EX • I/IF • GIA 6555311957

Certificate GIA 6555311957

Diamond specifications and retailer prices

From £508 GBP
$682 USD
As of November 2, 2026
Save £1,218 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,727 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555311957. Listed at 7 retailers as of October 30, 2026, with prices from £508 to £1,727, a £1,218 spread on the same certified stone. NZ Jewellers lists it at £1,727. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
I
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555311957
Dimensions9.15 × 3.94 × 2.44 mm
L/W Ratio2.32
Key to symbols
Surface Graining, Minor Details of Polish
Top View
9.15 mm3.94 mm0.51 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555311957
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.0%

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 2
Current: £1,727 GBP|Low: £444 GBP|High: £2,022 GBP|Avg: £990 GBP|-14.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6£508 GBP
Retailer 2£621 GBP
Retailer 3£736 GBP
Retailer 7£759 GBP
Retailer 4£1,009 GBP
Retailer 5£1,113 GBP
NZ Jewellers£1,727 GBP

36 data points across 7 retailers

7 retailers£508 GBP to £1,727 GBP

A
Cheapest Retailer
-
£508 GBP
$682 USD
Final sale: no returns
A
Retailer 2
-
£621 GBP
View
A
Retailer 3
-
£736 GBP
€940 EUR
View
B+
Retailer 4
-
£759 GBP
$1,018 USD
View
B+
Retailer 5
-
£1,009 GBP
View
B+
Retailer 6
-
£1,113 GBP
View
Most Expensive
B
NZ Jewellers
eee99ce7-3c5c-43e1-9748-6a5c0f2176a5 · Oct 30
£1,727 GBP
$2,317 USD
View
6 more retailers have this diamond
Prices start from £508 GBPSave up to £1,218 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
£508 GBP