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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5553986283

Certificate GIA 5553986283

Diamond specifications and retailer prices

From $2,393 USD
As of November 6, 2026
Save $2,927 USD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,714 USD at NZ Jewellers · As of September 27, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553986283. Listed at 18 retailers as of November 1, 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
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553986283
Dimensions10.69 × 5.62 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural, Natural
Top View
10.69 mm5.62 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553986283
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.7%

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: $2,481 USD|Low: $2,380 USD|High: $5,377 USD|Avg: $3,246 USD|-3.1%
Retailer 1
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 12$2,393 USD
Retailer 1$2,481 USD
Retailer 9$2,882 USD
Retailer 4$2,936 USD
Retailer 5$3,128 USD
Retailer 2$3,181 USD
Retailer 8$3,291 USD
Retailer 10$3,304 USD
Retailer 3$3,324 USD
Retailer 6$3,334 USD
Retailer 7$3,703 USD
Retailer 11$5,320 USD

27 data points across 12 retailers

18 retailers$2,393 USD to $5,320 USD

A
Cheapest Retailer
-
$2,393 USD
A
Retailer 2
-
$2,481 USD
View
A
Retailer 3
-
$2,882 USD
View
B+
Retailer 4
-
$2,936 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,034 USD
View
B+
Retailer 6
-
$3,128 USD
View
Retailer 7
-
$3,181 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
$3,222 USD
View
Retailer 9
-
$3,280 USD
View
Price last confirmed 41 days ago
Retailer 10
-
$3,280 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$3,291 USD
View
B+
Retailer 12
-
$3,304 USD
View
B+
Retailer 13
-
$3,324 USD
View
B+
Retailer 14
-
$3,334 USD
View
B+
Retailer 15
-
$3,703 USD
View
Retailer 16
-
$3,784 USD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$5,320 USD
View
Most Expensive
NZ Jewellers
53aac2cf-aa17-4cbf-abb5-3d74a658046a · Sep 27
$5,714 USD
View
Price last confirmed 40 days ago
17 more retailers have this diamond
Prices start from $2,393 USDSave up to $2,927 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.

A
1.20ct Marquise
$2,393 USD