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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5563654767

Certificate GIA 5563654767

Diamond specifications and retailer prices

From $2,739 SGD
As of November 1, 2026
Save $3,410 SGD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,688 SGD at NZ Jewellers · As of October 30, 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 5563654767. Listed at 18 retailers as of November 1, 2026, with a 125% 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5563654767
Dimensions6.78 × 6.74 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.78 mm6.74 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563654767
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 1
Current: $7,688 SGD|Low: $2,625 SGD|High: $7,688 SGD|Avg: $3,864 SGD|+3.5%
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
Retailer 19
November 2, 2026
Retailer 3$2,739 SGD
Retailer 12$2,787 SGD
Retailer 18$3,021 SGD
Retailer 8$3,093 SGD
Retailer 14$3,178 SGD
Retailer 17$3,394 SGD
Retailer 7$3,428 SGD
Retailer 6$3,441 SGD
Retailer 10$3,551 SGD
Retailer 16$3,677 SGD
Retailer 11$3,688 SGD
Retailer 9$3,806 SGD
Retailer 2$3,908 SGD
Retailer 4$3,961 SGD
Retailer 5$4,243 SGD
Retailer 13$4,296 SGD
Retailer 19$4,502 SGD
Retailer 15$6,149 SGD
NZ Jewellers$7,688 SGD

13 data points across 19 retailers

18 retailers$2,739 SGD to $6,149 SGD

A
Cheapest Retailer
-
$2,739 SGD
A
Retailer 2
-
$2,787 SGD
View
A
Retailer 3
-
$3,021 SGD
View
A
Retailer 4
-
$3,093 SGD
View
A
Retailer 5
-
$3,178 SGD
View
A
Retailer 6
-
$3,428 SGD
View
A
Retailer 7
-
$3,441 SGD
View
Retailer 8
-
$3,551 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,677 SGD
View
Retailer 10
-
$3,688 SGD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$3,806 SGD
View
B+
Retailer 12
-
$3,908 SGD
View
B+
Retailer 13
-
$3,961 SGD
View
B+
Retailer 14
-
$4,243 SGD
View
B+
Retailer 15
-
$4,296 SGD
View
B+
Retailer 16
-
$4,502 SGD
View
B
Retailer 17
-
$6,149 SGD
View
Most Expensive
NZ Jewellers
70cd373a-5ba6-4d13-8090-58c9fbdf3b5b · Oct 30
$7,688 SGD
$5,999 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from $2,739 SGDSave up to $3,410 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
$2,739 SGD