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Marquise|Natural|GIA

1.21ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6552770005

Certificate GIA 6552770005

Diamond specifications and retailer prices

From $5,991 SGD
As of November 1, 2026
Save $5,456 SGD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $11,447 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded H 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 6552770005. Listed at 12 retailers as of November 1, 2026, with prices from $5,991 to $11,447, a $5,456 spread on the same certified stone. MOH London lists it at $11,447. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552770005
Dimensions10.75 × 5.65 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.75 mm5.65 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552770005
Side View
Table 55.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
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 1
Current: $11,447 SGD|Low: $5,991 SGD|High: $11,616 SGD|Avg: $7,636 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$5,991 SGD
Retailer 7$6,156 SGD
Retailer 3$6,207 SGD
Retailer 9$6,569 SGD
Retailer 8$6,607 SGD
Retailer 4$7,400 SGD
Retailer 11$7,470 SGD
Retailer 2$7,558 SGD
Retailer 10$7,741 SGD
Retailer 5$9,504 SGD
MOH London$11,447 SGD

45 data points across 11 retailers

12 retailers$5,991 SGD to $11,447 SGD

B+
Cheapest Retailer
-
$5,991 SGD
B+
Retailer 2
-
$6,156 SGD
View
B+
Retailer 3
-
$6,207 SGD
View
B
Retailer 4
-
$6,569 SGD
View
B
Retailer 5
-
$6,607 SGD
View
B
Retailer 6
-
$7,400 SGD
View
B
Retailer 7
-
$7,470 SGD
View
B
Retailer 8
-
$7,558 SGD
View
B
Retailer 9
-
$7,732 SGD
View
Retailer 10
-
$7,741 SGD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$9,504 SGD
View
Most Expensive
B
MOH London
925C02E91 · Nov 4
$11,447 SGD
£7,033 GBP
View
11 more retailers have this diamond
Prices start from $5,991 SGDSave up to $5,456 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
$5,991 SGD