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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2567109603

Certificate GIA 2567109603

Diamond specifications and retailer prices

From $3,253 SGD
As of November 6, 2026
Save $2,886 SGD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,139 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 J 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 2567109603. Listed at 12 retailers as of November 6, 2026, with prices from $3,253 to $6,139, a $2,886 spread on the same certified stone. Helzberg Diamonds lists it at $6,139. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.5°
Pavilion angle40.3°
OriginNatural
Grading LabGIA
CertificateGIA 2567109603
Dimensions10.51 × 5.54 × 3.55 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.51 mm5.54 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567109603
Side View
Table 58.0%Crown 39.5°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 64.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $6,139 SGD|Low: $3,253 SGD|High: $6,390 SGD|Avg: $4,310 SGD|-3.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$3,253 SGD
Retailer 8$3,305 SGD
Retailer 10$3,510 SGD
Retailer 9$3,571 SGD
Retailer 7$3,792 SGD
Retailer 3$3,886 SGD
Retailer 11$4,170 SGD
Retailer 6$4,291 SGD
Retailer 12$4,300 SGD
Retailer 5$4,479 SGD
Retailer 4$5,768 SGD
Helzberg Diamonds$6,139 SGD

33 data points across 12 retailers

12 retailers$3,253 SGD to $6,139 SGD

A
Cheapest Retailer
-
$3,253 SGD
B+
Retailer 2
-
$3,305 SGD
View
B+
Retailer 3
-
$3,510 SGD
View
B+
Retailer 4
-
$3,571 SGD
View
B+
Retailer 5
-
$3,792 SGD
View
B+
Retailer 6
-
$3,886 SGD
View
B
Retailer 7
-
$4,170 SGD
View
B
Retailer 8
-
$4,291 SGD
View
B
Retailer 9
-
$4,300 SGD
View
B+
Retailer 10
-
$4,479 SGD
View
B
Retailer 11
-
$5,768 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRILMNHGPMGJ · Nov 6
$6,139 SGD
$4,790 USD
View
11 more retailers have this diamond
Prices start from $3,253 SGDSave up to $2,886 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
$3,253 SGD