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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6495819176

Certificate GIA 6495819176

Diamond specifications and retailer prices

From $3,071 SGD
As of November 4, 2026
Save $3,886 SGD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,957 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6495819176. Listed at 15 retailers as of November 4, 2026, with prices from $3,071 to $6,957, a $3,886 spread on the same certified stone. NZ Jewellers lists it at $6,957. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6495819176
Dimensions6.79 × 6.77 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.79 mm6.77 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6495819176
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,957 SGD|Low: $2,686 SGD|High: $6,957 SGD|Avg: $4,032 SGD|+4.8%
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
November 6, 2026
Retailer 6$2,896 SGD
Retailer 4$3,071 SGD
Retailer 2$3,140 SGD
Retailer 14$3,204 SGD
Retailer 13$3,327 SGD
Retailer 16$3,327 SGD
Retailer 3$3,481 SGD
Retailer 9$3,500 SGD
Retailer 7$3,696 SGD
Retailer 5$3,751 SGD
Retailer 15$3,840 SGD
Retailer 11$4,061 SGD
Retailer 10$4,123 SGD
Retailer 8$5,765 SGD
Retailer 12$5,830 SGD
NZ Jewellers$6,957 SGD

36 data points across 16 retailers

15 retailers$3,071 SGD to $6,957 SGD

B+
Cheapest Retailer
-
$3,071 SGD
Final sale: no returns
B+
Retailer 2
-
$3,140 SGD
View
B+
Retailer 3
-
$3,204 SGD
View
B+
Retailer 4
-
$3,327 SGD
View
Retailer 5
-
$3,327 SGD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,481 SGD
View
B+
Retailer 7
-
$3,500 SGD
View
Retailer 8
-
$3,696 SGD
View
Price last confirmed 25 days ago
Retailer 9
-
$3,751 SGD
View
Price last confirmed 25 days ago
B+
Retailer 10
-
$3,840 SGD
View
B+
Retailer 11
-
$4,061 SGD
View
B
Retailer 12
-
$4,123 SGD
View
Retailer 13
-
$5,765 SGD
View
Price last confirmed 25 days ago
B
Retailer 14
-
$5,830 SGD
View
Most Expensive
B
NZ Jewellers
6f08d3b7-6352-41ba-bfd4-e59c6e82067d · Nov 5
$6,957 SGD
$5,428 USD
View
14 more retailers have this diamond
Prices start from $3,071 SGDSave up to $3,886 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
$3,071 SGD