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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 1558597869

Certificate GIA 1558597869

Diamond specifications and retailer prices

From $655 SGD
HK$4,000 HKD
As of November 1, 2026
Save $1,150 SGD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,450 SGD at NZ Jewellers · As of November 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558597869. Listed at 16 retailers as of November 1, 2026, with a 176% 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

0.50
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle37.85°
Pavilion angle39.39°
OriginNatural
Grading LabGIA
CertificateGIA 1558597869
Dimensions8.02 × 4.10 × 2.60 mm
L/W Ratio1.96
Girdle conditionFaceted
Key to symbols
Cloud, Twinning Wisp
Top View
8.02 mm4.10 mm0.50 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1558597869
Side View
Table 59.0%Crown 37.85°Girdle: THK-VTKPavilion 39.39°Culet: NoneDepth 63.5%

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: Nov 1
Current: $2,450 SGD|Low: $655 SGD|High: $2,526 SGD|Avg: $1,146 SGD|-3.0%
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
November 3, 2026
Retailer 16$655 SGD
Retailer 4$720 SGD
Retailer 3$766 SGD
Retailer 6$803 SGD
Retailer 7$817 SGD
Retailer 13$842 SGD
Retailer 14$842 SGD
Retailer 2$887 SGD
Retailer 5$902 SGD
Retailer 9$959 SGD
Retailer 15$1,068 SGD
Retailer 10$1,152 SGD
Retailer 12$1,206 SGD
Retailer 8$1,211 SGD
Retailer 11$1,804 SGD
NZ Jewellers$2,450 SGD

38 data points across 16 retailers

16 retailers$655 SGD to $1,804 SGD

B+
Cheapest Retailer
-
$655 SGD
HK$4,000 HKD
B+
Retailer 2
-
$720 SGD
$563 USD
View
Final sale: no returns
B+
Retailer 3
-
$766 SGD
View
Retailer 4
-
$803 SGD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$817 SGD
$639 USD
View
B+
Retailer 6
-
$842 SGD
$658 USD
View
B+
Retailer 7
-
$842 SGD
$658 USD
View
B
Retailer 8
-
$887 SGD
£546 GBP
View
B
Retailer 9
-
$902 SGD
$705 USD
View
B
Retailer 10
-
$959 SGD
£591 GBP
View
B
Retailer 11
-
$1,068 SGD
$835 USD
View
B
Retailer 12
-
$1,152 SGD
€858 EUR
View
B
Retailer 13
-
$1,206 SGD
ZAR 15,236 ZAR
View
Retailer 14
-
$1,211 SGD
A$1,457 AUD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$1,804 SGD
£1,111 GBP
View
Most Expensive
NZ Jewellers
853c07dd-cc0c-4a75-b049-7a17799a9cf8 · Nov 3
$2,450 SGD
$1,916 USD
View
Price under review
15 more retailers have this diamond
Prices start from $655 SGDSave up to $1,150 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
$655 SGD