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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1549578318

Certificate GIA 1549578318

Diamond specifications and retailer prices

From $1,232 SGD
$963 USD
As of November 1, 2026
Save $1,315 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,390 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded D 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 1549578318. Listed at 21 retailers as of November 1, 2026, with a 107% 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

0.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549578318
Dimensions7.66 × 4.21 × 2.61 mm
L/W Ratio1.82
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.66 mm4.21 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1549578318
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.9%

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: Nov 1
Current: $3,390 SGD|Low: $1,234 SGD|High: $3,390 SGD|Avg: $1,864 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
November 2, 2026
Retailer 13$1,246 SGD
Retailer 3$1,260 SGD
Retailer 12$1,308 SGD
Retailer 9$1,416 SGD
Retailer 10$1,452 SGD
Retailer 5$1,567 SGD
Retailer 6$1,571 SGD
Retailer 2$1,802 SGD
Retailer 11$1,818 SGD
Retailer 8$2,146 SGD
Retailer 4$2,256 SGD
Retailer 7$2,547 SGD
NZ Jewellers$3,390 SGD

44 data points across 13 retailers

21 retailers$1,232 SGD to $2,547 SGD

B+
Cheapest Retailer
-
$1,232 SGD
$963 USD
B+
Retailer 2
-
$1,233 SGD
$964 USD
View
B+
Retailer 3
-
$1,246 SGD
$974 USD
View
B+
Retailer 4
-
$1,248 SGD
A$1,501 AUD
View
B+
Retailer 5
-
$1,260 SGD
$985 USD
View
B+
Retailer 6
-
$1,260 SGD
$985 USD
View
B+
Retailer 7
-
$1,308 SGD
$1,023 USD
View
B+
Retailer 8
-
$1,416 SGD
$1,107 USD
View
B
Retailer 9
-
$1,452 SGD
$1,135 USD
View
B+
Retailer 10
-
$1,453 SGD
$1,136 USD
View
B
Retailer 11
-
$1,535 SGD
$1,200 USD
View
B
Retailer 12
-
$1,535 SGD
$1,200 USD
View
B
Retailer 13
-
$1,567 SGD
$1,225 USD
View
B
Retailer 14
-
$1,571 SGD
£967 GBP
View
B
Retailer 15
-
$1,586 SGD
$1,240 USD
View
B
Retailer 16
-
$1,802 SGD
€1,342 EUR
View
Retailer 17
-
$1,818 SGD
A$2,187 AUD
View
Price last confirmed 28 days ago
B
Retailer 18
-
$2,146 SGD
ZAR 27,109 ZAR
View
B
Retailer 19
-
$2,256 SGD
CA$2,450 CAD
View
B
Retailer 20
-
$2,547 SGD
£1,568 GBP
View
Most Expensive
NZ Jewellers
fd89eb10-e512-4bea-bb36-f1c932654ce7 · Oct 30
$3,390 SGD
$2,651 USD
View
Price under review
20 more retailers have this diamond
Prices start from $1,232 SGDSave up to $1,315 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+
0.50ct Marquise
$1,232 SGD