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Marquise|Natural|GIA

1.20ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 3555986306

Certificate GIA 3555986306

Diamond specifications and retailer prices

From $6,425 SGD
As of November 5, 2026
Save $3,016 SGD (32%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,182 SGD at NZ Jewellers · As of September 20, 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 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 3555986306. Listed at 15 retailers as of November 5, 2026, with a 47% 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555986306
Dimensions10.13 × 5.51 × 3.47 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
10.13 mm5.51 mm1.20 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3555986306
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.9%

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 5
Current: $9,441 SGD|Low: $5,411 SGD|High: $11,738 SGD|Avg: $7,555 SGD|+35.7%
Retailer 1
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
November 6, 2026
Retailer 6$5,411 SGD
Retailer 15$5,826 SGD
Retailer 7$6,162 SGD
Retailer 10$6,425 SGD
Retailer 5$6,643 SGD
Retailer 13$6,808 SGD
Retailer 14$7,171 SGD
Retailer 8$7,242 SGD
Retailer 17$7,283 SGD
Retailer 2$7,333 SGD
Retailer 9$7,480 SGD
Retailer 11$7,952 SGD
Retailer 16$8,181 SGD
Retailer 4$8,761 SGD
Retailer 1$9,441 SGD
Retailer 12$10,194 SGD
Retailer 3$11,738 SGD

22 data points across 17 retailers

15 retailers$6,425 SGD to $9,441 SGD

Retailer 1
-
$5,411 SGD
Price last confirmed 29 days ago
B+
Retailer 2
-
$6,425 SGD
View
B+
Retailer 3
-
$6,643 SGD
View
Retailer 4
-
$6,943 SGD
View
Price last confirmed 30 days ago
Retailer 5
-
$7,242 SGD
View
Price last confirmed 31 days ago
Retailer 6
-
$7,283 SGD
View
Price last confirmed 44 days ago
Retailer 7
-
$7,333 SGD
View
Price last confirmed 33 days ago
B
Retailer 8
-
$7,790 SGD
View
B
Retailer 9
-
$7,952 SGD
View
Retailer 10
-
$8,403 SGD
View
Price last confirmed 45 days ago
Retailer 11
-
$8,761 SGD
View
Price last confirmed 42 days ago
B
Retailer 12
-
$9,441 SGD
View
Retailer 13
-
$10,194 SGD
View
Price last confirmed 30 days ago
Retailer 14
-
$11,738 SGD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
b2e0996d-3420-43f7-9cac-e9fec48854ad · Sep 20
$12,182 SGD
$9,537 USD
View
Price last confirmed 46 days ago
14 more retailers have this diamond
Prices start from $6,425 SGDSave up to $3,016 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
$6,425 SGD