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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

ID • J/SI2 • GIA 05

Certificate GIA 05

Diamond specifications and retailer prices

From $3,946 SGD
As of November 4, 2026
Save $5,000 SGD (56%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,946 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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. Listed at 8 retailers as of November 4, 2026, with prices from $3,946 to $8,946, a $5,000 spread on the same certified stone. NZ Jewellers lists it at $8,946. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 05
Dimensions10.32 × 5.53 × 3.51 mm
L/W Ratio1.87
Top View
10.32 mm5.53 mm1.21 ctJ / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 05
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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 4
Current: $8,946 SGD|Low: $3,946 SGD|High: $9,252 SGD|Avg: $5,323 SGD|-3.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3$3,946 SGD
Retailer 8$4,090 SGD
Retailer 4$4,651 SGD
Retailer 7$4,811 SGD
Retailer 6$4,830 SGD
Retailer 5$4,916 SGD
Retailer 2$5,316 SGD
NZ Jewellers$8,946 SGD

10 data points across 8 retailers

8 retailers$3,946 SGD to $8,946 SGD

B+
Cheapest Retailer
-
$3,946 SGD
B
Retailer 2
-
$4,090 SGD
View
B
Retailer 3
-
$4,651 SGD
View
Retailer 4
-
$4,811 SGD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$4,830 SGD
View
B
Retailer 6
-
$4,916 SGD
View
B
Retailer 7
-
$5,316 SGD
View
Most Expensive
B
NZ Jewellers
04eec4f6-1c62-4a18-9070-3db39de9fa65 · Nov 5
$8,946 SGD
$6,980 USD
View
7 more retailers have this diamond
Prices start from $3,946 SGDSave up to $5,000 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
$3,946 SGD