Marquise|Natural|IGI

1.20ct G SI1 Marquise Natural Diamond

VG • G/SI1 • IGI 801638156

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 801638156

Diamond specifications and retailer prices

From $2,995 USD
As of November 1, 2026
Save $4,019 USD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,014 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 801638156. Listed at 20 retailers as of November 1, 2026, with prices from $2,995 to $7,014, a $4,019 spread on the same certified stone. NZ Jewellers lists it at $7,014. 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
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle34.8°
OriginNatural
Grading LabIGI
CertificateIGI 801638156
Dimensions11.22 × 5.69 × 3.07 mm
L/W Ratio1.97
Girdle conditionFaceted
Top View
11.22 mm5.69 mm1.20 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 801638156
Side View
Table 62.0%Crown 33.7°Girdle: STK-THKPavilion 34.8°Culet: NoneDepth 54.0%

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 1
Current: $3,905 USD|Low: $3,090 USD|High: $6,813 USD|Avg: $4,512 USD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$3,380 USD
Retailer 8$3,715 USD
Retailer 1$3,905 USD
Retailer 9$4,026 USD
Retailer 3$4,129 USD
Retailer 2$4,494 USD
Retailer 7$4,727 USD
Retailer 4$4,914 USD
Retailer 6$6,769 USD

40 data points across 9 retailers

20 retailers$2,995 USD to $7,014 USD

A
Cheapest Retailer
-
$2,995 USD
B+
Retailer 2
-
$3,380 USD
View
B+
Retailer 3
-
$3,500 USD
View
B+
Retailer 4
-
$3,543 USD
View
Retailer 5
-
$3,607 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$3,715 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,840 USD
View
B+
Retailer 8
-
$3,905 USD
View
B+
Retailer 9
-
$4,026 USD
View
B+
Retailer 10
-
$4,026 USD
View
Retailer 11
-
$4,026 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$4,058 USD
View
B+
Retailer 13
-
$4,129 USD
View
B+
Retailer 14
-
$4,173 USD
View
B
Retailer 15
-
$4,494 USD
View
B
Retailer 16
-
$4,645 USD
View
B
Retailer 17
-
$4,914 USD
View
B
Retailer 18
-
$5,918 USD
View
Retailer 19
-
$6,769 USD
View
Price last confirmed 8 days ago
Most Expensive
B
NZ Jewellers
07948e4e-9dd3-4c0a-9991-44929910dfc2 · Nov 5
$7,014 USD
View
19 more retailers have this diamond
Prices start from $2,995 USDSave up to $4,019 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
$2,995 USD