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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

ID • I/SI2 • GIA 6541821320

Certificate GIA 6541821320

Diamond specifications and retailer prices

From $4,302 SGD
As of November 6, 2026
Save $5,966 SGD (58%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,268 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541821320. Listed at 22 retailers as of November 5, 2026, with prices from $4,302 to $10,268, a $5,966 spread on the same certified stone. NZ Jewellers lists it at $10,268. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.17°
Pavilion angle41.24°
OriginNatural
Grading LabGIA
CertificateGIA 6541821320
Dimensions10.31 × 5.49 × 3.59 mm
L/W Ratio1.88
Top View
10.31 mm5.49 mm1.20 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541821320
Side View
Table 57.0%Crown 38.17°Girdle: Slightly ThickPavilion 41.24°Culet: NoneDepth 65.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $10,268 SGD|Low: $4,302 SGD|High: $10,268 SGD|Avg: $6,252 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
November 7, 2026
Retailer 10$4,302 SGD
Retailer 6$4,698 SGD
Retailer 11$4,780 SGD
Retailer 4$4,864 SGD
Retailer 5$4,928 SGD
Retailer 3$5,339 SGD
Retailer 14$5,339 SGD
Retailer 15$5,339 SGD
Retailer 7$5,452 SGD
Retailer 8$5,795 SGD
Retailer 2$5,803 SGD
Retailer 13$6,161 SGD
Retailer 9$6,632 SGD
Retailer 12$9,388 SGD
NZ Jewellers$10,268 SGD

35 data points across 15 retailers

22 retailers$4,302 SGD to $10,268 SGD

B+
Cheapest Retailer
-
$4,302 SGD
B+
Retailer 2
-
$4,698 SGD
View
B+
Retailer 3
-
$4,780 SGD
View
B+
Retailer 4
-
$4,864 SGD
View
B+
Retailer 5
-
$4,928 SGD
View
Final sale: no returns
B
Retailer 6
-
$5,319 SGD
View
Retailer 7
-
$5,339 SGD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$5,339 SGD
View
B
Retailer 9
-
$5,339 SGD
View
Retailer 10
-
$5,339 SGD
View
Price last confirmed 30 days ago
B
Retailer 11
-
$5,452 SGD
View
B
Retailer 12
-
$5,780 SGD
View
B
Retailer 13
-
$5,780 SGD
View
B+
Retailer 14
-
$5,795 SGD
View
B+
Retailer 15
-
$5,803 SGD
View
B
Retailer 16
-
$5,972 SGD
View
B
Retailer 17
-
$6,161 SGD
View
Retailer 18
-
$6,161 SGD
View
Price last confirmed 24 days ago
B
Retailer 19
-
$6,632 SGD
View
Retailer 20
-
$6,664 SGD
View
Price last confirmed 23 days ago
B
Retailer 21
-
$9,388 SGD
View
Most Expensive
B
NZ Jewellers
fb7d9bd2-31bc-48ef-bd72-849a60980f7e · Nov 5
$10,268 SGD
$8,012 USD
View
21 more retailers have this diamond
Prices start from $4,302 SGDSave up to $5,966 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
$4,302 SGD