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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6552321568

Certificate GIA 6552321568

Diamond specifications and retailer prices

From $4,079 SGD
As of November 4, 2026
Save $3,678 SGD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,758 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552321568. Listed at 12 retailers as of November 4, 2026, with prices from $4,079 to $7,758, a $3,678 spread on the same certified stone. Helzberg Diamonds lists it at $7,758. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.45°
Pavilion angle42.02°
OriginNatural
Grading LabGIA
CertificateGIA 6552321568
Dimensions10.69 × 5.65 × 3.55 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.69 mm5.65 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552321568
Side View
Table 61.0%Crown 35.45°Girdle: MED-THKPavilion 42.02°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $7,758 SGD|Low: $4,079 SGD|High: $7,766 SGD|Avg: $5,345 SGD|-0.1%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7$4,079 SGD
Retailer 6$4,111 SGD
Retailer 5$4,179 SGD
Retailer 8$4,359 SGD
Retailer 2$4,711 SGD
Retailer 11$4,912 SGD
Retailer 9$5,206 SGD
Retailer 10$5,283 SGD
Retailer 4$5,426 SGD
Retailer 3$7,287 SGD
Helzberg Diamonds$7,758 SGD

43 data points across 11 retailers

12 retailers$4,079 SGD to $7,758 SGD

A
Cheapest Retailer
-
$4,079 SGD
A
Retailer 2
-
$4,111 SGD
View
A
Retailer 3
-
$4,179 SGD
View
B+
Retailer 4
-
$4,359 SGD
View
B+
Retailer 5
-
$4,711 SGD
View
B+
Retailer 6
-
$4,912 SGD
View
B+
Retailer 7
-
$5,206 SGD
View
B+
Retailer 8
-
$5,283 SGD
View
B+
Retailer 9
-
$5,426 SGD
View
B+
Retailer 10
-
$5,528 SGD
View
B
Retailer 11
-
$7,287 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLIJIHLMO · Nov 6
$7,758 SGD
$6,053 USD
View
11 more retailers have this diamond
Prices start from $4,079 SGDSave up to $3,678 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.

A
1.21ct Marquise
$4,079 SGD