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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 6552812953

Certificate GIA 6552812953

Diamond specifications and retailer prices

From $755 SGD
HK$4,600 HKD
As of October 29, 2026
Save $1,073 SGD (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,113 SGD at NZ Jewellers · As of October 17, 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 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 6552812953. Listed at 17 retailers as of October 29, 2026, with a 142% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552812953
Dimensions7.83 × 4.28 × 2.64 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.83 mm4.28 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552812953
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.8%

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: Oct 29
Current: $1,189 SGD|Low: $710 SGD|High: $1,841 SGD|Avg: $1,114 SGD|+6.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3$752 SGD
Retailer 7$755 SGD
Retailer 8$886 SGD
Retailer 5$915 SGD
Retailer 1$1,189 SGD
Retailer 4$1,211 SGD
Retailer 6$1,493 SGD
Retailer 2$1,828 SGD

43 data points across 8 retailers

17 retailers$755 SGD to $1,828 SGD

A
Retailer 1
-
$752 SGD
₹55,912 INR
Price last confirmed 9 days ago
A
Retailer 2
-
$755 SGD
HK$4,600 HKD
View
A
Retailer 3
-
$886 SGD
$691 USD
View
A
Retailer 4
-
$915 SGD
$714 USD
View
Final sale: no returns
A
Retailer 5
-
$993 SGD
$775 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$993 SGD
$775 USD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$1,007 SGD
$786 USD
View
A
Retailer 8
-
$1,030 SGD
$804 USD
View
Price last confirmed 12 days ago
A
Retailer 9
-
$1,050 SGD
View
B+
Retailer 10
-
$1,146 SGD
$894 USD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$1,163 SGD
$907 USD
View
B+
Retailer 12
-
$1,189 SGD
£731 GBP
View
B+
Retailer 13
-
$1,211 SGD
$945 USD
View
B+
Retailer 14
-
$1,346 SGD
$1,050 USD
View
B+
Retailer 15
-
$1,493 SGD
A$1,792 AUD
View
Price last confirmed 25 days ago
B
Retailer 16
-
$1,828 SGD
£1,123 GBP
View
Most Expensive
B
NZ Jewellers
ba939c1f-2809-4921-8d8e-37c312bb936f · Oct 17
$3,113 SGD
$2,429 USD
View
Price under review
16 more retailers have this diamond
Prices start from $755 SGDSave up to $1,073 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
$755 SGD