Marquise|Natural|IGI

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 712558468

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 712558468

Diamond specifications and retailer prices

From $2,597 USD
As of November 5, 2026
Save $2,900 USD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,497 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 712558468. Listed at 15 retailers as of November 5, 2026, with prices from $2,597 to $5,497, a $2,900 spread on the same certified stone. NZ Jewellers lists it at $5,497. 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 angle41.8°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 712558468
Dimensions10.73 × 5.29 × 3.40 mm
L/W Ratio2.03
Girdle conditionFaceted
Top View
10.73 mm5.29 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 712558468
Side View
Table 60.0%Crown 41.8°Girdle: THK-VTKPavilion 39.1°Culet: NoneDepth 64.3%

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 5
Current: $5,497 USD|Low: $2,582 USD|High: $5,497 USD|Avg: $3,541 USD
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
November 6, 2026
Retailer 10$2,597 USD
Retailer 6$2,826 USD
Retailer 13$2,830 USD
Retailer 4$2,855 USD
Retailer 3$2,958 USD
Retailer 14$3,094 USD
Retailer 7$3,155 USD
Retailer 8$3,259 USD
Retailer 15$3,276 USD
Retailer 12$3,607 USD
Retailer 5$3,641 USD
Retailer 9$3,776 USD
Retailer 2$4,670 USD
Retailer 11$5,160 USD
NZ Jewellers$5,497 USD

12 data points across 15 retailers

15 retailers$2,597 USD to $5,497 USD

A
Cheapest Retailer
-
$2,597 USD
B+
Retailer 2
-
$2,826 USD
View
A
Retailer 3
-
$2,830 USD
View
B+
Retailer 4
-
$2,855 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,958 USD
View
Retailer 6
-
$3,094 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,155 USD
View
B+
Retailer 8
-
$3,259 USD
View
B+
Retailer 9
-
$3,276 USD
View
B+
Retailer 10
-
$3,607 USD
View
B
Retailer 11
-
$3,641 USD
View
B
Retailer 12
-
$3,776 USD
View
B
Retailer 13
-
$4,670 USD
View
B
Retailer 14
-
$5,160 USD
View
Most Expensive
B
NZ Jewellers
7882e09e-f60e-485f-a5cf-6d3b55008840 · Nov 5
$5,497 USD
View
14 more retailers have this diamond
Prices start from $2,597 USDSave up to $2,900 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
$2,597 USD