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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6541370134

Certificate GIA 6541370134

Diamond specifications and retailer prices

From $1,096 SGD
$857 USD
As of October 29, 2026
Save $1,317 SGD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,196 SGD 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 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 6541370134. Listed at 23 retailers as of October 29, 2026, with a 120% 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541370134
Dimensions8.12 × 4.15 × 2.57 mm
L/W Ratio1.96
Top View
8.12 mm4.15 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541370134
Side View
Table 63.0%CrownGirdle: MED-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: $3,196 SGD|Low: $913 SGD|High: $3,196 SGD|Avg: $1,699 SGD
NZ Jewellers
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
Retailer 15
October 31, 2026
Retailer 13$1,096 SGD
Retailer 11$1,099 SGD
Retailer 4$1,188 SGD
Retailer 15$1,232 SGD
Retailer 3$1,337 SGD
Retailer 5$1,369 SGD
Retailer 12$1,387 SGD
Retailer 7$1,474 SGD
Retailer 2$1,537 SGD
Retailer 14$1,713 SGD
Retailer 8$1,840 SGD
Retailer 9$2,023 SGD
Retailer 6$2,122 SGD
Retailer 10$2,413 SGD
NZ Jewellers$3,196 SGD

46 data points across 15 retailers

23 retailers$1,096 SGD to $2,413 SGD

A
Cheapest Retailer
-
$1,096 SGD
$857 USD
Final sale: no returns
Retailer 2
-
$1,099 SGD
$860 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$1,174 SGD
$918 USD
View
B+
Retailer 4
-
$1,183 SGD
A$1,424 AUD
View
B+
Retailer 5
-
$1,188 SGD
$929 USD
View
B+
Retailer 6
-
$1,188 SGD
$929 USD
View
B+
Retailer 7
-
$1,199 SGD
$938 USD
View
B+
Retailer 8
-
$1,232 SGD
$964 USD
View
B+
Retailer 9
-
$1,337 SGD
$1,046 USD
View
B
Retailer 10
-
$1,369 SGD
$1,071 USD
View
B
Retailer 11
-
$1,387 SGD
$1,085 USD
View
B+
Retailer 12
-
$1,445 SGD
$1,130 USD
View
B+
Retailer 13
-
$1,445 SGD
$1,130 USD
View
B+
Retailer 14
-
$1,474 SGD
$1,153 USD
View
B+
Retailer 15
-
$1,496 SGD
$1,170 USD
View
B+
Retailer 16
-
$1,537 SGD
£946 GBP
View
Retailer 17
-
$1,713 SGD
A$2,062 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
$1,725 SGD
$1,349 USD
View
B
Retailer 19
-
$1,840 SGD
€1,371 EUR
View
B
Retailer 20
-
$2,023 SGD
ZAR 25,560 ZAR
View
B
Retailer 21
-
$2,122 SGD
CA$2,306 CAD
View
B
Retailer 22
-
$2,413 SGD
£1,486 GBP
View
Most Expensive
NZ Jewellers
6fe8d8e1-b6e0-4a79-8df8-877dfdece077 · Oct 30
$3,196 SGD
$2,500 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,096 SGDSave up to $1,317 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
$1,096 SGD