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Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 2554757133

Certificate GIA 2554757133

Diamond specifications and retailer prices

From €304 EUR
SGD 459 SGD
As of November 1, 2026
Save €390 EUR (56%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €694 EUR 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554757133. Listed at 7 retailers as of November 1, 2026, with prices from €304 to €694, a €390 spread on the same certified stone. Frank Darling lists it at €694. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554757133
Dimensions7.70 × 4.13 × 2.70 mm
L/W Ratio1.86
Culet sizeNone
Top View
7.70 mm4.13 mm0.51 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554757133
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.3%

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: €694 EUR|Low: €222 EUR|High: €747 EUR|Avg: €452 EUR|-7.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 8€222 EUR
Retailer 5€304 EUR
Retailer 4€309 EUR
Retailer 3€357 EUR
Retailer 2€396 EUR
Retailer 10€420 EUR
Retailer 6€468 EUR
Retailer 7€586 EUR
Retailer 9€591 EUR
Frank Darling€694 EUR

24 data points across 10 retailers

7 retailers€304 EUR to €694 EUR

A
Cheapest Retailer
-
€304 EUR
SGD 459 SGD
A
Retailer 2
-
€309 EUR
SGD 467 SGD
View
A
Retailer 3
-
€357 EUR
£314 GBP
View
A
Retailer 4
-
€396 EUR
$442 USD
View
A
Retailer 5
-
€420 EUR
$469 USD
View
A
Retailer 6
-
€468 EUR
$523 USD
View
Most Expensive
B+
Frank Darling
2665115HK · Nov 2
€694 EUR
$775 USD
View
6 more retailers have this diamond
Prices start from €304 EURSave up to €390 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
€304 EUR