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Marquise|Natural|IGI

1.00ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 788607681

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 788607681

Diamond specifications and retailer prices

From $1,742 AUD
As of November 6, 2026
Save $1,741 AUD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,793 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 788607681. Listed at 15 retailers as of November 4, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.7°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 788607681
Dimensions9.81 × 5.17 × 3.34 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Top View
9.81 mm5.17 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 788607681
Side View
Table 62.0%Crown 40.7°Girdle: STK-THKPavilion 41°Culet: NoneDepth 64.6%

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: $2,160 AUD|Low: $1,742 AUD|High: $3,643 AUD|Avg: $2,351 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 4$1,742 AUD
Retailer 3$1,768 AUD
Retailer 2$1,965 AUD
Retailer 10$1,987 AUD
Retailer 9$2,016 AUD
Retailer 5$2,075 AUD
Retailer 1$2,160 AUD
Retailer 7$2,327 AUD
Retailer 6$2,610 AUD
Retailer 8$3,483 AUD

44 data points across 10 retailers

15 retailers$1,742 AUD to $3,483 AUD

A
Cheapest Retailer
-
$1,742 AUD
A
Retailer 2
-
$1,768 AUD
View
Retailer 3
-
$1,965 AUD
View
Price last confirmed 37 days ago
Retailer 4
-
$1,965 AUD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
$1,987 AUD
View
B+
Retailer 6
-
$2,016 AUD
View
Retailer 7
-
$2,055 AUD
View
Price last confirmed 37 days ago
B+
Retailer 8
-
$2,075 AUD
View
B+
Retailer 9
-
$2,160 AUD
View
Retailer 10
-
$2,268 AUD
View
Price last confirmed 62 days ago
Retailer 11
-
$2,268 AUD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
$2,327 AUD
View
B+
Retailer 13
-
$2,610 AUD
View
B
Retailer 14
-
$3,483 AUD
View
Most Expensive
NZ Jewellers
c87500d9-3436-4a17-a546-ca8cbea6dba6 · Sep 30
$4,793 AUD
$3,293 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $1,742 AUDSave up to $1,741 AUD

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
1.00ct Marquise
$1,742 AUD