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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5566279707

Certificate GIA 5566279707

Diamond specifications and retailer prices

From $3,199 SGD
As of November 6, 2026
Save $3,913 SGD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $7,935 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566279707. Listed at 22 retailers as of November 2, 2026, with a 122% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5566279707
Dimensions6.75 × 6.70 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural, Extra Facet
Top View
6.75 mm6.70 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566279707
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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 6
Current: $7,935 SGD|Low: $3,199 SGD|High: $7,959 SGD|Avg: $5,036 SGD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,199 SGD
Retailer 3$3,324 SGD
Retailer 7$3,738 SGD
Retailer 10$3,935 SGD
Retailer 4$4,069 SGD
Retailer 5$4,347 SGD
Retailer 2$4,969 SGD
Retailer 6$5,190 SGD
Retailer 8$7,112 SGD
Queensmith$7,935 SGD

24 data points across 10 retailers

22 retailers$3,199 SGD to $7,112 SGD

A
Cheapest Retailer
-
$3,199 SGD
A
Retailer 2
-
$3,324 SGD
View
A
Retailer 3
-
$3,738 SGD
View
B+
Retailer 4
-
$3,808 SGD
View
B+
Retailer 5
-
$3,924 SGD
View
Final sale: no returns
B+
Retailer 6
-
$3,935 SGD
View
B+
Retailer 7
-
$3,935 SGD
View
B+
Retailer 8
-
$4,069 SGD
View
Retailer 9
-
$4,254 SGD
View
Price last confirmed 19 days ago
Retailer 10
-
$4,254 SGD
View
Price last confirmed 25 days ago
B+
Retailer 11
-
$4,293 SGD
View
B+
Retailer 12
-
$4,347 SGD
View
Retailer 13
-
$4,416 SGD
View
Price last confirmed 22 days ago
B+
Retailer 14
-
$4,437 SGD
View
B+
Retailer 15
-
$4,457 SGD
View
Retailer 16
-
$4,560 SGD
View
Price last confirmed 33 days ago
Retailer 17
-
$4,907 SGD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$4,969 SGD
View
B+
Retailer 19
-
$5,190 SGD
View
B
Retailer 20
-
$7,112 SGD
View
Retailer 21
-
$7,410 SGD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5566279707 · Oct 28
$7,935 SGD
£4,875 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $3,199 SGDSave up to $3,913 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
$3,199 SGD