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Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2554430101

Certificate GIA 2554430101

Diamond specifications and retailer prices

From $3,456 SGD
As of November 6, 2026
Save $3,965 SGD (53%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $7,943 SGD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554430101. Listed at 27 retailers as of November 5, 2026, with a 115% 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

1.20
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554430101
Dimensions6.75 × 6.72 × 4.22 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.75 mm6.72 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554430101
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
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: $7,943 SGD|Low: $3,266 SGD|High: $7,943 SGD|Avg: $5,038 SGD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$3,456 SGD
Retailer 3$3,562 SGD
Retailer 9$3,860 SGD
Retailer 2$3,964 SGD
Retailer 10$4,216 SGD
Retailer 12$4,216 SGD
Retailer 5$4,355 SGD
Retailer 11$4,357 SGD
Retailer 6$4,956 SGD
Retailer 8$4,970 SGD
Retailer 7$7,105 SGD
Queensmith$7,943 SGD

37 data points across 12 retailers

27 retailers$3,456 SGD to $7,422 SGD

A
Cheapest Retailer
-
$3,456 SGD
A
Retailer 2
-
$3,486 SGD
View
A
Retailer 3
-
$3,562 SGD
View
Final sale: no returns
Retailer 4
-
$3,860 SGD
View
Price last confirmed 8 days ago
Retailer 5
-
$3,860 SGD
View
Price last confirmed 49 days ago
Retailer 6
-
$3,860 SGD
View
Price last confirmed 29 days ago
Retailer 7
-
$3,860 SGD
View
Price last confirmed 15 days ago
Retailer 8
-
$3,860 SGD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$3,891 SGD
View
B+
Retailer 10
-
$3,964 SGD
View
Retailer 11
-
$4,008 SGD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$4,216 SGD
View
B+
Retailer 13
-
$4,216 SGD
View
B+
Retailer 14
-
$4,355 SGD
View
B+
Retailer 15
-
$4,357 SGD
View
Retailer 16
-
$4,454 SGD
View
Price last confirmed 28 days ago
Retailer 17
-
$4,454 SGD
View
Price last confirmed 45 days ago
B+
Retailer 18
-
$4,454 SGD
View
Retailer 19
-
$4,941 SGD
View
Price last confirmed 24 days ago
B+
Retailer 20
-
$4,956 SGD
View
B
Retailer 21
-
$4,970 SGD
View
B
Retailer 22
-
$7,105 SGD
View
B
Retailer 23
-
$7,422 SGD
View
Retailer 24
-
$7,422 SGD
View
Price last confirmed 39 days ago
Retailer 25
-
$7,422 SGD
View
Price last confirmed 48 days ago
Retailer 26
-
$7,422 SGD
View
Price last confirmed 17 days ago
Most Expensive
Queensmith
2554430101 · Oct 28
$7,943 SGD
£4,880 GBP
View
Price last confirmed 8 days ago
26 more retailers have this diamond
Prices start from $3,456 SGDSave up to $3,965 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
1.20ct Round
$3,456 SGD