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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 6532891205

Certificate GIA 6532891205

Diamond specifications and retailer prices

From $1,006 SGD
$787 USD
As of October 29, 2026
Save $1,372 SGD (58%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,150 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 6532891205. Listed at 25 retailers as of October 29, 2026, with a 136% 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
SymmetryVery Good
FluorescenceNone
Pavilion angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 6532891205
Dimensions8.19 × 4.21 × 2.62 mm
L/W Ratio1.95
Top View
8.19 mm4.21 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6532891205
Side View
Table 61.0%CrownGirdle: MED-VTKPavilion 42.2°Culet: NoneDepth 62.2%

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: $3,150 SGD|Low: $1,006 SGD|High: $3,150 SGD|Avg: $1,626 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
October 31, 2026
Retailer 10$1,006 SGD
Retailer 13$1,162 SGD
Retailer 4$1,170 SGD
Retailer 5$1,170 SGD
Retailer 12$1,214 SGD
Retailer 3$1,350 SGD
Retailer 9$1,368 SGD
Retailer 2$1,514 SGD
Retailer 11$1,689 SGD
Retailer 6$1,815 SGD
Retailer 7$1,994 SGD
Retailer 8$2,379 SGD
NZ Jewellers$3,150 SGD

45 data points across 13 retailers

25 retailers$1,006 SGD to $2,379 SGD

A
Cheapest Retailer
-
$1,006 SGD
$787 USD
Final sale: no returns
B+
Retailer 2
-
$1,083 SGD
$847 USD
View
B+
Retailer 3
-
$1,148 SGD
$898 USD
View
B+
Retailer 4
-
$1,158 SGD
$906 USD
View
B+
Retailer 5
-
$1,162 SGD
$909 USD
View
B+
Retailer 6
-
$1,168 SGD
A$1,406 AUD
View
B+
Retailer 7
-
$1,170 SGD
$915 USD
View
B+
Retailer 8
-
$1,170 SGD
$915 USD
View
B+
Retailer 9
-
$1,184 SGD
$926 USD
View
B+
Retailer 10
-
$1,214 SGD
$950 USD
View
B+
Retailer 11
-
$1,298 SGD
$1,015 USD
View
B+
Retailer 12
-
$1,350 SGD
$1,056 USD
View
B
Retailer 13
-
$1,368 SGD
$1,070 USD
View
B+
Retailer 14
-
$1,432 SGD
$1,120 USD
View
B+
Retailer 15
-
$1,432 SGD
$1,120 USD
View
B+
Retailer 16
-
$1,452 SGD
$1,136 USD
View
B+
Retailer 17
-
$1,470 SGD
$1,150 USD
View
B+
Retailer 18
-
$1,514 SGD
£933 GBP
View
B
Retailer 19
-
$1,594 SGD
$1,247 USD
View
Retailer 20
-
$1,689 SGD
A$2,032 AUD
View
Price last confirmed 27 days ago
B
Retailer 21
-
$1,815 SGD
€1,352 EUR
View
B
Retailer 22
-
$1,994 SGD
ZAR 25,195 ZAR
View
B
Retailer 23
-
$2,091 SGD
CA$2,272 CAD
View
B
Retailer 24
-
$2,379 SGD
£1,465 GBP
View
Most Expensive
NZ Jewellers
55f901b7-fcb2-4052-92d0-b6ae44ff6f1d · Oct 30
$3,150 SGD
$2,464 USD
View
Price under review
24 more retailers have this diamond
Prices start from $1,006 SGDSave up to $1,372 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
$1,006 SGD