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 $5,403 NZD
As of November 1, 2026
Save $7,250 NZD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,653 NZD 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 $5,403 to $12,653, a $7,250 spread on the same certified stone. NZ Jewellers lists it at $12,653. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,079 NZD|Low: $5,574 NZD|High: $12,290 NZD|Avg: $8,135 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$6,097 NZD
Retailer 8$6,701 NZD
Retailer 3$7,044 NZD
Retailer 9$7,263 NZD
Retailer 2$7,493 NZD
Retailer 4$8,107 NZD
Retailer 7$8,527 NZD
Retailer 5$8,864 NZD
Retailer 1$12,079 NZD

40 data points across 9 retailers

20 retailers$5,403 NZD to $12,653 NZD

A
Cheapest Retailer
-
$5,403 NZD
B+
Retailer 2
-
$6,097 NZD
View
B+
Retailer 3
-
$6,314 NZD
View
B+
Retailer 4
-
$6,391 NZD
View
Retailer 5
-
$6,507 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$6,701 NZD
View
Final sale: no returns
B+
Retailer 7
-
$6,927 NZD
View
B+
Retailer 8
-
$7,044 NZD
View
B+
Retailer 9
-
$7,263 NZD
View
B+
Retailer 10
-
$7,263 NZD
View
Retailer 11
-
$7,263 NZD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$7,320 NZD
View
B+
Retailer 13
-
$7,493 NZD
View
B+
Retailer 14
-
$7,528 NZD
View
B
Retailer 15
-
$8,107 NZD
View
B
Retailer 16
-
$8,379 NZD
View
B
Retailer 17
-
$8,864 NZD
View
B
Retailer 18
-
$10,675 NZD
View
B
Retailer 19
-
$12,079 NZD
View
Most Expensive
B
NZ Jewellers
07948e4e-9dd3-4c0a-9991-44929910dfc2 · Nov 5
$12,653 NZD
$7,014 USD
View
19 more retailers have this diamond
Prices start from $5,403 NZDSave up to $7,250 NZD

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
$5,403 NZD