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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 5553433569

Certificate GIA 5553433569

Diamond specifications and retailer prices

From $3,952 SGD
As of November 6, 2026
Save $4,761 SGD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,873 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5553433569. Listed at 21 retailers as of November 4, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle45.5°
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 5553433569
Dimensions9.45 × 5.42 × 3.71 mm
L/W Ratio1.74
Girdle conditionFaceted
Top View
9.45 mm5.42 mm1.20 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553433569
Side View
Table 67.0%Crown 45.5°Girdle: THK-ETKPavilion 38.5°Culet: NDepth 68.5%

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 6
Current: $5,069 SGD|Low: $3,937 SGD|High: $8,815 SGD|Avg: $5,321 SGD|-6.6%
Retailer 1
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
November 6, 2026
Retailer 6$3,952 SGD
Retailer 3$4,052 SGD
Retailer 5$4,202 SGD
Retailer 4$4,282 SGD
Retailer 8$4,369 SGD
Retailer 13$4,537 SGD
Retailer 15$4,919 SGD
Retailer 1$5,069 SGD
Retailer 10$5,260 SGD
Retailer 7$5,357 SGD
Retailer 16$5,357 SGD
Retailer 17$5,537 SGD
Retailer 14$5,888 SGD
Retailer 9$5,934 SGD
Retailer 2$6,208 SGD
Retailer 11$6,377 SGD
Retailer 12$8,714 SGD

23 data points across 17 retailers

21 retailers$3,952 SGD to $8,714 SGD

B+
Cheapest Retailer
-
$3,952 SGD
B+
Retailer 2
-
$4,052 SGD
View
B+
Retailer 3
-
$4,202 SGD
View
B+
Retailer 4
-
$4,282 SGD
View
B+
Retailer 5
-
$4,369 SGD
View
Final sale: no returns
B+
Retailer 6
-
$4,537 SGD
View
B
Retailer 7
-
$4,919 SGD
View
B
Retailer 8
-
$5,069 SGD
View
Retailer 9
-
$5,134 SGD
View
Price last confirmed 40 days ago
B
Retailer 10
-
$5,260 SGD
View
B
Retailer 11
-
$5,357 SGD
View
B
Retailer 12
-
$5,357 SGD
View
B
Retailer 13
-
$5,537 SGD
View
B
Retailer 14
-
$5,888 SGD
View
Retailer 15
-
$5,924 SGD
View
Price last confirmed 39 days ago
Retailer 16
-
$5,934 SGD
View
Price last confirmed 15 days ago
Retailer 17
-
$6,007 SGD
View
Price last confirmed 39 days ago
B
Retailer 18
-
$6,208 SGD
View
B
Retailer 19
-
$6,377 SGD
View
C
Retailer 20
-
$8,714 SGD
View
Most Expensive
NZ Jewellers
2614a395-b61f-45fd-9a07-4b2d0db037a7 · Sep 28
$9,873 SGD
$7,704 USD
View
Price last confirmed 40 days ago
20 more retailers have this diamond
Prices start from $3,952 SGDSave up to $4,761 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+
1.20ct Marquise
$3,952 SGD