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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 5553606199

Certificate GIA 5553606199

Diamond specifications and retailer prices

From $4,115 SGD
As of November 5, 2026
Save $5,461 SGD (57%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $9,576 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553606199. Listed at 26 retailers as of November 5, 2026, with prices from $4,115 to $9,576, a $5,461 spread on the same certified stone. NZ Jewellers lists it at $9,576. 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

1.20
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553606199
Dimensions10.07 × 5.57 × 3.48 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Cloud, Crystal, Cavity, Natural
Top View
10.07 mm5.57 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553606199
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

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 5
Current: $9,576 SGD|Low: $3,494 SGD|High: $9,576 SGD|Avg: $5,204 SGD|+3.8%
NZ Jewellers
Retailer 2
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Retailer 21
Retailer 22
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Retailer 24
Retailer 25
Retailer 26
Retailer 27
November 6, 2026
Retailer 20$3,494 SGD
Retailer 14$3,990 SGD
Retailer 22$4,115 SGD
Retailer 12$4,332 SGD
Retailer 27$4,473 SGD
Retailer 26$4,587 SGD
Retailer 6$4,596 SGD
Retailer 15$4,695 SGD
Retailer 5$4,761 SGD
Retailer 18$4,859 SGD
Retailer 23$4,980 SGD
Retailer 17$5,016 SGD
Retailer 21$5,087 SGD
Retailer 11$5,294 SGD
Retailer 8$5,303 SGD
Retailer 2$5,333 SGD
Retailer 16$5,483 SGD
Retailer 25$5,545 SGD
Retailer 7$5,626 SGD
Retailer 24$5,626 SGD
Retailer 19$5,642 SGD
Retailer 13$5,745 SGD
Retailer 3$5,806 SGD
Retailer 9$5,808 SGD
Retailer 10$5,968 SGD
Retailer 4$8,802 SGD
NZ Jewellers$9,576 SGD

24 data points across 27 retailers

26 retailers$4,115 SGD to $9,576 SGD

Retailer 1
-
$3,494 SGD
Price last confirmed 30 days ago
Retailer 2
-
$3,990 SGD
View
Price last confirmed 23 days ago
B+
Retailer 3
-
$4,115 SGD
View
B+
Retailer 4
-
$4,332 SGD
View
Retailer 5
-
$4,473 SGD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$4,596 SGD
View
Final sale: no returns
B
Retailer 7
-
$4,761 SGD
View
Retailer 8
-
$4,859 SGD
View
Price last confirmed 37 days ago
Retailer 9
-
$4,909 SGD
View
Price last confirmed 32 days ago
Retailer 10
-
$4,934 SGD
View
Price last confirmed 32 days ago
B
Retailer 11
-
$4,980 SGD
View
Retailer 12
-
$5,016 SGD
View
Price last confirmed 34 days ago
B
Retailer 13
-
$5,087 SGD
View
Retailer 14
-
$5,294 SGD
View
Price last confirmed 22 days ago
B
Retailer 15
-
$5,303 SGD
View
B
Retailer 16
-
$5,333 SGD
View
Retailer 17
-
$5,483 SGD
View
Price last confirmed 22 days ago
Retailer 18
-
$5,545 SGD
View
Price last confirmed 16 days ago
B
Retailer 19
-
$5,626 SGD
View
B
Retailer 20
-
$5,626 SGD
View
Retailer 21
-
$5,642 SGD
View
Price last confirmed 38 days ago
B
Retailer 22
-
$5,745 SGD
View
B
Retailer 23
-
$5,806 SGD
View
B
Retailer 24
-
$5,808 SGD
View
Retailer 25
-
$8,802 SGD
View
Price last confirmed 17 days ago
Most Expensive
B
NZ Jewellers
5280c123-4502-4cb1-bf1a-66867a5a9419 · Nov 5
$9,576 SGD
$7,472 USD
View
25 more retailers have this diamond
Prices start from $4,115 SGDSave up to $5,461 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+
1.20ct Marquise
$4,115 SGD