Marquise|Natural|IGI

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 835613875

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 835613875

Diamond specifications and retailer prices

From $2,574 USD
As of November 6, 2026
Save $3,443 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,017 USD at NZ Jewellers · As of November 5, 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 very-good cut grade and certified by IGI 835613875. Listed at 18 retailers as of November 5, 2026, with prices from $2,574 to $6,017, a $3,443 spread on the same certified stone. NZ Jewellers lists it at $6,017. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.8°
OriginNatural
Grading LabIGI
CertificateIGI 835613875
Dimensions10.43 × 5.51 × 3.46 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
10.43 mm5.51 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 835613875
Side View
Table 57.0%Crown 35.9°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 62.8%

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: $6,017 USD|Low: $2,574 USD|High: $6,083 USD|Avg: $3,769 USD|-1.1%
NZ Jewellers
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
Retailer 18
November 6, 2026
Retailer 2$2,574 USD
Retailer 6$3,065 USD
Retailer 9$3,255 USD
Retailer 4$3,305 USD
Retailer 16$3,330 USD
Retailer 11$3,350 USD
Retailer 10$3,453 USD
Retailer 18$3,453 USD
Retailer 3$3,586 USD
Retailer 17$3,598 USD
Retailer 13$3,617 USD
Retailer 5$3,655 USD
Retailer 8$3,780 USD
Retailer 12$3,785 USD
Retailer 7$3,985 USD
Retailer 14$4,215 USD
Retailer 15$5,759 USD
NZ Jewellers$6,017 USD

19 data points across 18 retailers

18 retailers$2,574 USD to $6,017 USD

A
Cheapest Retailer
-
$2,574 USD
B+
Retailer 2
-
$3,065 USD
View
B+
Retailer 3
-
$3,255 USD
View
B+
Retailer 4
-
$3,305 USD
View
B+
Retailer 5
-
$3,330 USD
View
B+
Retailer 6
-
$3,350 USD
View
Retailer 7
-
$3,453 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,453 USD
View
B+
Retailer 9
-
$3,586 USD
View
B+
Retailer 10
-
$3,598 USD
View
B+
Retailer 11
-
$3,617 USD
View
B+
Retailer 12
-
$3,655 USD
View
B+
Retailer 13
-
$3,780 USD
View
B+
Retailer 14
-
$3,785 USD
View
B
Retailer 15
-
$3,985 USD
View
B
Retailer 16
-
$4,215 USD
View
B
Retailer 17
-
$5,759 USD
View
Most Expensive
B
NZ Jewellers
8768dbb9-f8f5-49af-beaf-a7d36c813bfe · Nov 5
$6,017 USD
View
17 more retailers have this diamond
Prices start from $2,574 USDSave up to $3,443 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
$2,574 USD