Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 5553433569

Certificate GIA 5553433569

Diamond specifications and retailer prices

From $3,084 USD
As of November 6, 2026
Save $3,715 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,704 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,955 USD|Low: $3,072 USD|High: $6,878 USD|Avg: $4,152 USD|-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$3,084 USD
Retailer 3$3,162 USD
Retailer 5$3,279 USD
Retailer 4$3,341 USD
Retailer 8$3,409 USD
Retailer 13$3,540 USD
Retailer 15$3,838 USD
Retailer 1$3,955 USD
Retailer 10$4,104 USD
Retailer 7$4,180 USD
Retailer 16$4,180 USD
Retailer 17$4,320 USD
Retailer 14$4,594 USD
Retailer 9$4,630 USD
Retailer 2$4,844 USD
Retailer 11$4,976 USD
Retailer 12$6,799 USD

23 data points across 17 retailers

21 retailers$3,084 USD to $6,799 USD

B+
Cheapest Retailer
-
$3,084 USD
B+
Retailer 2
-
$3,162 USD
View
B+
Retailer 3
-
$3,279 USD
View
B+
Retailer 4
-
$3,341 USD
View
B+
Retailer 5
-
$3,409 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,540 USD
View
B
Retailer 7
-
$3,838 USD
View
B
Retailer 8
-
$3,955 USD
View
Retailer 9
-
$4,006 USD
View
Price last confirmed 39 days ago
B
Retailer 10
-
$4,104 USD
View
B
Retailer 11
-
$4,180 USD
View
B
Retailer 12
-
$4,180 USD
View
B
Retailer 13
-
$4,320 USD
View
B
Retailer 14
-
$4,594 USD
View
Retailer 15
-
$4,622 USD
View
Price last confirmed 38 days ago
Retailer 16
-
$4,630 USD
View
Price last confirmed 14 days ago
Retailer 17
-
$4,687 USD
View
Price last confirmed 38 days ago
B
Retailer 18
-
$4,844 USD
View
B
Retailer 19
-
$4,976 USD
View
C
Retailer 20
-
$6,799 USD
View
Most Expensive
NZ Jewellers
2614a395-b61f-45fd-9a07-4b2d0db037a7 · Sep 28
$7,704 USD
View
Price last confirmed 39 days ago
20 more retailers have this diamond
Prices start from $3,084 USDSave up to $3,715 USD

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
$3,084 USD