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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2557099524

Certificate GIA 2557099524

Diamond specifications and retailer prices

From $2,871 SGD
As of November 6, 2026
Save $3,451 SGD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,986 SGD at NZ Jewellers · As of October 17, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557099524. Listed at 17 retailers as of November 2, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557099524
Dimensions6.79 × 6.84 × 4.16 mm
L/W Ratio1.01
Top View
6.79 mm6.84 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557099524
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,990 SGD|Low: $2,854 SGD|High: $6,464 SGD|Avg: $3,951 SGD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$2,871 SGD
Retailer 1$2,990 SGD
Retailer 7$3,354 SGD
Retailer 10$3,483 SGD
Retailer 2$3,490 SGD
Retailer 3$3,820 SGD
Retailer 9$3,927 SGD
Retailer 5$3,978 SGD
Retailer 4$4,001 SGD
Retailer 6$4,392 SGD
Retailer 8$6,322 SGD

38 data points across 11 retailers

17 retailers$2,871 SGD to $6,322 SGD

A
Cheapest Retailer
-
$2,871 SGD
A
Retailer 2
-
$2,990 SGD
View
A
Retailer 3
-
$3,354 SGD
View
A
Retailer 4
-
$3,483 SGD
View
A
Retailer 5
-
$3,490 SGD
View
Final sale: no returns
A
Retailer 6
-
$3,560 SGD
View
Retailer 7
-
$3,820 SGD
View
Price last confirmed 43 days ago
Retailer 8
-
$3,820 SGD
View
Price last confirmed 17 days ago
Retailer 9
-
$3,820 SGD
View
Price last confirmed 21 days ago
A
Retailer 10
-
$3,927 SGD
View
A
Retailer 11
-
$3,978 SGD
View
B+
Retailer 12
-
$4,001 SGD
View
B+
Retailer 13
-
$4,392 SGD
View
Retailer 14
-
$4,407 SGD
View
Price last confirmed 45 days ago
B
Retailer 15
-
$6,322 SGD
View
Retailer 16
-
$7,986 SGD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
7f9bf449-dab7-4491-b009-3dc9b40f010e · Oct 17
$7,986 SGD
$6,231 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $2,871 SGDSave up to $3,451 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
$2,871 SGD