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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1555452594

Certificate GIA 1555452594

Diamond specifications and retailer prices

From $1,157 SGD
$905 USD
As of November 1, 2026
Save $1,098 SGD (49%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,389 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 1555452594. Listed at 24 retailers as of October 30, 2026, with a 95% 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555452594
Dimensions8.80 × 4.01 × 2.54 mm
L/W Ratio2.19
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather
Top View
8.80 mm4.01 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555452594
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.4%

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: $3,389 SGD|Low: $791 SGD|High: $3,389 SGD|Avg: $1,506 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 2, 2026
Retailer 16$1,104 SGD
Retailer 13$1,157 SGD
Retailer 18$1,162 SGD
Retailer 11$1,168 SGD
Retailer 8$1,231 SGD
Retailer 4$1,232 SGD
Retailer 22$1,236 SGD
Retailer 23$1,245 SGD
Retailer 3$1,259 SGD
Retailer 10$1,259 SGD
Retailer 20$1,308 SGD
Retailer 21$1,425 SGD
Retailer 17$1,451 SGD
Retailer 5$1,452 SGD
Retailer 12$1,534 SGD
Retailer 15$1,534 SGD
Retailer 6$1,566 SGD
Retailer 2$1,570 SGD
Retailer 14$1,585 SGD
Retailer 9$1,810 SGD
Retailer 19$1,817 SGD
Retailer 7$2,255 SGD
NZ Jewellers$3,389 SGD

44 data points across 23 retailers

24 retailers$1,157 SGD to $2,255 SGD

Retailer 1
-
$835 SGD
HK$5,100 HKD
Price last confirmed 59 days ago
B+
Retailer 2
-
$1,157 SGD
$905 USD
View
B+
Retailer 3
-
$1,162 SGD
$909 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,168 SGD
$914 USD
View
B+
Retailer 5
-
$1,231 SGD
$963 USD
View
B+
Retailer 6
-
$1,232 SGD
$964 USD
View
B+
Retailer 7
-
$1,236 SGD
$967 USD
View
B+
Retailer 8
-
$1,245 SGD
$974 USD
View
B+
Retailer 9
-
$1,247 SGD
A$1,501 AUD
View
B+
Retailer 10
-
$1,259 SGD
$985 USD
View
B+
Retailer 11
-
$1,259 SGD
$985 USD
View
B+
Retailer 12
-
$1,308 SGD
$1,023 USD
View
B+
Retailer 13
-
$1,425 SGD
$1,115 USD
View
B
Retailer 14
-
$1,451 SGD
$1,135 USD
View
B+
Retailer 15
-
$1,452 SGD
$1,136 USD
View
B
Retailer 16
-
$1,534 SGD
$1,200 USD
View
B
Retailer 17
-
$1,534 SGD
$1,200 USD
View
B
Retailer 18
-
$1,566 SGD
$1,225 USD
View
B
Retailer 19
-
$1,570 SGD
£967 GBP
View
B
Retailer 20
-
$1,585 SGD
$1,240 USD
View
B
Retailer 21
-
$1,810 SGD
$1,416 USD
View
Retailer 22
-
$1,817 SGD
A$2,187 AUD
View
Price last confirmed 28 days ago
B
Retailer 23
-
$2,255 SGD
CA$2,450 CAD
View
Most Expensive
NZ Jewellers
f3be42e8-93e5-40cc-b751-f593e0ae7a41 · Oct 30
$3,389 SGD
$2,651 USD
View
Price under review
23 more retailers have this diamond
Prices start from $1,157 SGDSave up to $1,098 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
$1,157 SGD