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Marquise|Natural|GIA

0.51ct I IF Marquise Natural Diamond

GD • I/IF • GIA 2556513837

Certificate GIA 2556513837

Diamond specifications and retailer prices

From €642 EUR
MYR 2,934 MYR
As of November 2, 2026
Save €156 EUR (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €798 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2556513837. Listed at 5 retailers as of October 31, 2026, with prices from €642 to €798, a €156 spread on the same certified stone. Blue Nile lists it at €798. 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
I
Color
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556513837
Dimensions8.11 × 4.21 × 2.66 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Minor Details of Polish
Top View
8.11 mm4.21 mm0.51 ctI / IF
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556513837
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.2%

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: €798 EUR|Low: €550 EUR|High: €843 EUR|Avg: €706 EUR|-5.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5€642 EUR
Retailer 4€646 EUR
Retailer 3€704 EUR
Retailer 2€756 EUR
Blue Nile€798 EUR

38 data points across 5 retailers

5 retailers€642 EUR to €798 EUR

A
Cheapest Retailer
-
€642 EUR
MYR 2,934 MYR
A
Retailer 2
-
€646 EUR
$724 USD
View
Final sale: no returns
A
Retailer 3
-
€704 EUR
$790 USD
View
B+
Retailer 4
-
€756 EUR
£667 GBP
View
Most Expensive
B+
Blue Nile
29422953 · Oct 31
€798 EUR
$895 USD
View
4 more retailers have this diamond
Prices start from €642 EURSave up to €156 EUR

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
€642 EUR