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Round|Natural|GIA

1.21ct F I1 Round Natural Diamond

EX • F/I1 • GIA 5423904145

Certificate GIA 5423904145

Diamond specifications and retailer prices

From $2,999 SGD
₹223,303 INR
As of October 31, 2026
Save $4,159 SGD (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,158 SGD at NZ Jewellers · As of November 2, 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 F colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 5423904145. Listed at 9 retailers as of October 31, 2026, with prices from $2,999 to $7,158, a $4,159 spread on the same certified stone. NZ Jewellers lists it at $7,158. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423904145
Dimensions6.82 × 6.79 × 4.22 mm
L/W Ratio1.00
Top View
6.82 mm6.79 mm1.21 ctF / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5423904145
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

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: Oct 31
Current: $7,158 SGD|Low: $2,991 SGD|High: $7,158 SGD|Avg: $4,344 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$2,999 SGD
Retailer 5$3,012 SGD
Retailer 3$3,618 SGD
Retailer 7$4,109 SGD
Retailer 9$4,109 SGD
Retailer 6$4,266 SGD
Retailer 8$4,741 SGD
Retailer 2$4,789 SGD
NZ Jewellers$7,158 SGD

42 data points across 9 retailers

9 retailers$2,999 SGD to $7,158 SGD

A
Cheapest Retailer
-
$2,999 SGD
₹223,303 INR
B+
Retailer 2
-
$3,012 SGD
HK$18,400 HKD
View
B+
Retailer 3
-
$3,618 SGD
$2,829 USD
View
B+
Retailer 4
-
$4,109 SGD
$3,213 USD
View
B+
Retailer 5
-
$4,109 SGD
$3,213 USD
View
B
Retailer 6
-
$4,266 SGD
$3,336 USD
View
B
Retailer 7
-
$4,741 SGD
$3,707 USD
View
B
Retailer 8
-
$4,789 SGD
€3,566 EUR
View
Most Expensive
B
NZ Jewellers
6487ac5a-7cda-4580-9166-e1e3f40ec77d · Nov 2
$7,158 SGD
$5,597 USD
View
8 more retailers have this diamond
Prices start from $2,999 SGDSave up to $4,159 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
$2,999 SGD