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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2416493551

Certificate GIA 2416493551

Diamond specifications and retailer prices

From $3,697 SGD
As of November 4, 2026
Save $4,542 SGD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,239 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2416493551. Listed at 19 retailers as of November 4, 2026, with prices from $3,697 to $8,239, a $4,542 spread on the same certified stone. NZ Jewellers lists it at $8,239. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2416493551
Dimensions6.80 × 6.76 × 4.24 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2416493551
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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 4
Current: $8,239 SGD|Low: $3,549 SGD|High: $8,314 SGD|Avg: $4,969 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 14$3,697 SGD
Retailer 18$3,727 SGD
Retailer 5$3,803 SGD
Retailer 6$3,954 SGD
Retailer 15$4,024 SGD
Retailer 9$4,284 SGD
Retailer 10$4,284 SGD
Retailer 3$4,300 SGD
Retailer 17$4,448 SGD
Retailer 7$4,793 SGD
Retailer 16$4,793 SGD
Retailer 12$4,864 SGD
Retailer 2$4,896 SGD
Retailer 8$4,960 SGD
Retailer 11$5,171 SGD
Retailer 4$5,356 SGD
Retailer 13$7,887 SGD
NZ Jewellers$8,239 SGD

39 data points across 18 retailers

19 retailers$3,697 SGD to $8,239 SGD

A
Cheapest Retailer
-
$3,697 SGD
A
Retailer 2
-
$3,727 SGD
View
B+
Retailer 3
-
$3,803 SGD
View
B+
Retailer 4
-
$3,941 SGD
View
B+
Retailer 5
-
$3,954 SGD
View
Final sale: no returns
Retailer 6
-
$4,024 SGD
View
Price last confirmed 17 days ago
Retailer 7
-
$4,284 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$4,284 SGD
View
B+
Retailer 9
-
$4,300 SGD
View
B+
Retailer 10
-
$4,448 SGD
View
B
Retailer 11
-
$4,793 SGD
View
B
Retailer 12
-
$4,793 SGD
View
B
Retailer 13
-
$4,820 SGD
View
B+
Retailer 14
-
$4,864 SGD
View
B
Retailer 15
-
$4,896 SGD
View
B
Retailer 16
-
$4,960 SGD
View
B+
Retailer 17
-
$5,171 SGD
View
B
Retailer 18
-
$7,887 SGD
View
Most Expensive
B
NZ Jewellers
016afa2a-a770-4c4a-8e1c-d63ca2ad3294 · Nov 5
$8,239 SGD
$6,429 USD
View
18 more retailers have this diamond
Prices start from $3,697 SGDSave up to $4,542 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 Round
$3,697 SGD