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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 7562185918

Certificate GIA 7562185918

Diamond specifications and retailer prices

From $7,139 SGD
As of November 5, 2026
Save $5,248 SGD (42%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,387 SGD at NZ Jewellers · As of November 3, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7562185918. Listed at 9 retailers as of November 3, 2026, with prices from $7,139 to $12,387, a $5,248 spread on the same certified stone. NZ Jewellers lists it at $12,387. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle37.43°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 7562185918
Dimensions10.67 × 5.57 × 3.49 mm
L/W Ratio1.92
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
10.67 mm5.57 mm1.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7562185918
Side View
Table 58.0%Crown 37.43°Girdle: THK-VTKPavilion 39.32°Culet: NoneDepth 62.6%

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 5
Current: $12,387 SGD|Low: $6,914 SGD|High: $13,076 SGD|Avg: $8,683 SGD|-5.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$7,139 SGD
Retailer 7$7,139 SGD
Retailer 3$7,223 SGD
Retailer 6$7,405 SGD
Retailer 8$7,405 SGD
Retailer 9$7,637 SGD
Retailer 2$8,369 SGD
Retailer 4$10,909 SGD
NZ Jewellers$12,387 SGD

44 data points across 9 retailers

9 retailers$7,139 SGD to $12,387 SGD

B+
Cheapest Retailer
-
$7,139 SGD
B+
Retailer 2
-
$7,139 SGD
View
B+
Retailer 3
-
$7,223 SGD
View
B+
Retailer 4
-
$7,405 SGD
View
B+
Retailer 5
-
$7,405 SGD
View
Retailer 6
-
$7,637 SGD
View
Price last confirmed 29 days ago
B+
Retailer 7
-
$8,369 SGD
View
B
Retailer 8
-
$10,909 SGD
View
Most Expensive
B
NZ Jewellers
8839e944-3533-45b3-ada4-8b9cbfdcc6b5 · Nov 3
$12,387 SGD
$9,665 USD
View
8 more retailers have this diamond
Prices start from $7,139 SGDSave up to $5,248 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
$7,139 SGD