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Marquise|Natural|GIA

1.21ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1545905349

Certificate GIA 1545905349

Diamond specifications and retailer prices

From $5,530 SGD
As of November 6, 2026
Save $2,134 SGD (28%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,664 SGD at Jared · As of November 4, 2026
View at Jared

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I 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 1545905349. Listed at 7 retailers as of November 4, 2026, with prices from $5,530 to $7,664, a $2,134 spread on the same certified stone. Jared lists it at $7,664. 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

1.21
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1545905349
Dimensions11.29 × 5.62 × 3.33 mm
L/W Ratio2.01
Girdle conditionFaceted
Key to symbols
Crystal, Feather, Needle
Top View
11.29 mm5.62 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1545905349
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.4%

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 6
Current: $7,664 SGD|Low: $4,905 SGD|High: $8,056 SGD|Avg: $6,915 SGD|-2.0%
Jared
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
October 26, 2026
Retailer 8$4,905 SGD
Retailer 10$5,089 SGD
Retailer 14$5,530 SGD
Retailer 15$5,825 SGD
Retailer 11$5,848 SGD
Retailer 6$6,703 SGD
Retailer 18$6,703 SGD
Retailer 12$6,957 SGD
Retailer 5$7,085 SGD
Retailer 2$7,420 SGD
Retailer 13$7,420 SGD
Retailer 16$7,424 SGD
Jared$7,664 SGD
Retailer 7$7,702 SGD
Retailer 9$7,801 SGD
Retailer 4$7,805 SGD
Retailer 17$7,955 SGD
Retailer 3$8,056 SGD

10 data points across 18 retailers

7 retailers$5,530 SGD to $7,664 SGD

B+
Cheapest Retailer
-
$5,530 SGD
B+
Retailer 2
-
$5,825 SGD
View
Final sale: no returns
B+
Retailer 3
-
$5,848 SGD
View
B
Retailer 4
-
$6,957 SGD
View
B
Retailer 5
-
$7,420 SGD
View
B
Retailer 6
-
$7,420 SGD
View
Most Expensive
B
Jared
159442496 · Nov 4
$7,664 SGD
$5,980 USD
View
6 more retailers have this diamond
Prices start from $5,530 SGDSave up to $2,134 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+
1.21ct Marquise
$5,530 SGD