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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2166080674

Certificate GIA 2166080674

Diamond specifications and retailer prices

From $8,430 SGD
As of November 1, 2026
Save $3,188 SGD (27%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $18,862 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2166080674. Listed at 9 retailers as of November 1, 2026, with a 38% 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2166080674
Dimensions6.85 × 6.82 × 4.23 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.85 mm6.82 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2166080674
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $11,618 SGD|Low: $8,430 SGD|High: $11,732 SGD|Avg: $10,017 SGD|+2.1%
Retailer 1
Retailer 2
November 5, 2026
Retailer 2$8,430 SGD
Retailer 1$11,618 SGD

24 data points across 2 retailers

9 retailers$8,430 SGD to $11,618 SGD

B
Cheapest Retailer
-
$8,430 SGD
B
Retailer 2
-
$8,539 SGD
View
B
Retailer 3
-
$9,326 SGD
View
B
Retailer 4
-
$11,193 SGD
View
B
Retailer 5
-
$11,240 SGD
View
B
Retailer 6
-
$11,240 SGD
View
B
Retailer 7
-
$11,611 SGD
View
B
Retailer 8
-
$11,618 SGD
View
Most Expensive
Diamond Quarter
1.21SI2E2174BEA0N · Nov 5
$18,862 SGD
£11,628 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $8,430 SGDSave up to $3,188 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 Round
$8,430 SGD