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Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2496683844

Certificate GIA 2496683844

Diamond specifications and retailer prices

From $5,446 SGD
As of November 4, 2026
Save $5,434 SGD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,695 SGD at NZ Jewellers · As of September 15, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2496683844. Listed at 17 retailers as of November 4, 2026, with a 100% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2496683844
Dimensions6.78 × 6.74 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.78 mm6.74 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2496683844
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $10,880 SGD|Low: $5,283 SGD|High: $10,880 SGD|Avg: $6,964 SGD
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
November 6, 2026
Retailer 5$5,446 SGD
Retailer 10$5,543 SGD
Retailer 14$5,625 SGD
Retailer 12$5,765 SGD
Retailer 4$6,244 SGD
Retailer 6$6,244 SGD
Retailer 11$6,244 SGD
Retailer 13$6,294 SGD
Retailer 2$7,054 SGD
Retailer 3$7,205 SGD
Retailer 7$7,411 SGD
Retailer 8$7,619 SGD
Retailer 9$9,918 SGD
NZ Jewellers$10,880 SGD

41 data points across 14 retailers

17 retailers$5,446 SGD to $10,880 SGD

B+
Cheapest Retailer
-
$5,446 SGD
B+
Retailer 2
-
$5,543 SGD
View
B+
Retailer 3
-
$5,625 SGD
View
B
Retailer 4
-
$5,765 SGD
View
Final sale: no returns
Retailer 5
-
$6,244 SGD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$6,244 SGD
View
B
Retailer 7
-
$6,244 SGD
View
Retailer 8
-
$6,294 SGD
View
Price last confirmed 29 days ago
Retailer 9
-
$6,992 SGD
View
Price last confirmed 54 days ago
B
Retailer 10
-
$7,054 SGD
View
B
Retailer 11
-
$7,205 SGD
View
B
Retailer 12
-
$7,411 SGD
View
B
Retailer 13
-
$7,619 SGD
View
Retailer 14
-
$8,068 SGD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$9,918 SGD
View
B
Retailer 16
-
$10,880 SGD
View
Most Expensive
NZ Jewellers
b3a5a2a6-9c28-4e75-846a-69207593fe8d · Sep 15
$11,695 SGD
$9,125 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $5,446 SGDSave up to $5,434 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
$5,446 SGD