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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2245015530

Certificate GIA 2245015530

Diamond specifications and retailer prices

From $3,490 SGD
As of November 4, 2026
Save $3,146 SGD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,636 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 2245015530. Listed at 12 retailers as of November 4, 2026, with prices from $3,490 to $6,636, a $3,146 spread on the same certified stone. Helzberg Diamonds lists it at $6,636. 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
FluorescenceMedium
Crown angle39.86°
Pavilion angle37.96°
OriginNatural
Grading LabGIA
CertificateGIA 2245015530
Dimensions10.63 × 5.56 × 3.40 mm
L/W Ratio1.91
Culet sizeNone
Top View
10.63 mm5.56 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245015530
Side View
Table 58.0%Crown 39.86°Girdle: MED-THKPavilion 37.96°Culet: NoneDepth 61.1%

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: $6,636 SGD|Low: $3,490 SGD|High: $7,268 SGD|Avg: $4,647 SGD|-8.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$3,490 SGD
Retailer 7$3,524 SGD
Retailer 5$3,574 SGD
Retailer 9$3,763 SGD
Retailer 4$4,074 SGD
Retailer 3$4,204 SGD
Retailer 11$4,491 SGD
Retailer 10$4,602 SGD
Retailer 2$4,642 SGD
Retailer 6$6,263 SGD
Helzberg Diamonds$6,636 SGD

38 data points across 11 retailers

12 retailers$3,490 SGD to $6,636 SGD

A
Cheapest Retailer
-
$3,490 SGD
A
Retailer 2
-
$3,524 SGD
View
A
Retailer 3
-
$3,574 SGD
View
A
Retailer 4
-
$3,763 SGD
View
A
Retailer 5
-
$4,074 SGD
View
B+
Retailer 6
-
$4,204 SGD
View
B+
Retailer 7
-
$4,491 SGD
View
B+
Retailer 8
-
$4,602 SGD
View
B+
Retailer 9
-
$4,642 SGD
View
B
Retailer 10
-
$5,048 SGD
View
B
Retailer 11
-
$6,263 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGHLLJG · Nov 6
$6,636 SGD
$5,178 USD
View
11 more retailers have this diamond
Prices start from $3,490 SGDSave up to $3,146 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
$3,490 SGD