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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6545062248

Certificate GIA 6545062248

Diamond specifications and retailer prices

From $1,102 SGD
$862 USD
As of October 30, 2026
Save $1,593 SGD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,874 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545062248. Listed at 18 retailers as of October 28, 2026, with a 145% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.73°
Pavilion angle41.46°
OriginNatural
Grading LabGIA
CertificateGIA 6545062248
Dimensions7.69 × 4.12 × 2.70 mm
L/W Ratio1.87
Top View
7.69 mm4.12 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545062248
Side View
Table 61.0%Crown 40.73°Girdle: MED-VTKPavilion 41.46°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,447 SGD|Low: $1,140 SGD|High: $2,703 SGD|Avg: $1,807 SGD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8$1,140 SGD
Retailer 7$1,425 SGD
Retailer 1$1,447 SGD
Retailer 4$1,486 SGD
Retailer 2$1,738 SGD
Retailer 9$1,858 SGD
Retailer 3$1,907 SGD
Retailer 6$2,213 SGD
Retailer 5$2,695 SGD

38 data points across 9 retailers

18 retailers$1,102 SGD to $2,695 SGD

B+
Cheapest Retailer
-
$1,102 SGD
$862 USD
B+
Retailer 2
-
$1,140 SGD
$892 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,209 SGD
$946 USD
View
Retailer 4
-
$1,235 SGD
$966 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$1,235 SGD
$966 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$1,284 SGD
$1,004 USD
View
Price last confirmed 14 days ago
B
Retailer 7
-
$1,406 SGD
$1,100 USD
View
Retailer 8
-
$1,425 SGD
$1,115 USD
View
Price last confirmed 60 days ago
B
Retailer 9
-
$1,425 SGD
$1,115 USD
View
Retailer 10
-
$1,425 SGD
$1,115 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
$1,447 SGD
£891 GBP
View
B+
Retailer 12
-
$1,486 SGD
£915 GBP
View
B
Retailer 13
-
$1,738 SGD
€1,295 EUR
View
Retailer 14
-
$1,858 SGD
A$2,236 AUD
View
Price last confirmed 26 days ago
B
Retailer 15
-
$1,907 SGD
ZAR 24,099 ZAR
View
B
Retailer 16
-
$2,213 SGD
£1,363 GBP
View
B
Retailer 17
-
$2,695 SGD
£1,660 GBP
View
Most Expensive
NZ Jewellers
8972141a-a417-4250-8f54-dbca49b1ad38 · Oct 17
$3,874 SGD
$3,030 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,102 SGDSave up to $1,593 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.

B+
0.51ct Marquise
$1,102 SGD