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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6565212812

Certificate GIA 6565212812

Diamond specifications and retailer prices

From $745 SGD
As of November 6, 2026
Save $2,257 SGD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,408 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565212812. Listed at 15 retailers as of November 5, 2026, with a 303% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565212812
Dimensions8.68 × 4.06 × 2.46 mm
L/W Ratio2.14
Culet sizeNone
Top View
8.68 mm4.06 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565212812
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $3,408 SGD|Low: $745 SGD|High: $3,408 SGD|Avg: $1,440 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 2$745 SGD
Retailer 6$932 SGD
Retailer 7$1,303 SGD
Retailer 8$1,376 SGD
Retailer 4$1,705 SGD
Retailer 10$1,796 SGD
Retailer 13$1,945 SGD
Retailer 3$1,980 SGD
Retailer 14$2,056 SGD
Retailer 5$2,244 SGD
Retailer 11$2,387 SGD
Retailer 12$2,394 SGD
Retailer 9$3,002 SGD
MOH London$3,408 SGD

39 data points across 14 retailers

15 retailers$745 SGD to $3,002 SGD

A
Cheapest Retailer
-
$745 SGD
A
Retailer 2
-
$907 SGD
View
Retailer 3
-
$932 SGD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
$1,303 SGD
View
B+
Retailer 5
-
$1,376 SGD
View
B
Retailer 6
-
$1,705 SGD
View
B
Retailer 7
-
$1,796 SGD
View
Final sale: no returns
B
Retailer 8
-
$1,945 SGD
View
B
Retailer 9
-
$1,980 SGD
View
B
Retailer 10
-
$2,056 SGD
View
B
Retailer 11
-
$2,244 SGD
View
B
Retailer 12
-
$2,387 SGD
View
B
Retailer 13
-
$2,394 SGD
View
C
Retailer 14
-
$3,002 SGD
View
Most Expensive
MOH London
239CFF363 · Nov 2
$3,408 SGD
£2,101 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $745 SGDSave up to $2,257 SGD

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
$745 SGD