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 $1,197 USD
As of November 6, 2026
Save $1,196 USD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,293 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,197 USD|Low: $1,197 USD|High: $2,503 USD|Avg: $1,619 USD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$1,197 USD
Retailer 2$1,350 USD
Retailer 10$1,365 USD
Retailer 9$1,385 USD
Retailer 8$1,425 USD
Retailer 3$1,426 USD
Retailer 5$1,475 USD
Retailer 6$1,599 USD
Retailer 4$1,793 USD
Retailer 7$2,393 USD

44 data points across 10 retailers

15 retailers$1,197 USD to $2,393 USD

A
Cheapest Retailer
-
$1,197 USD
Retailer 2
-
$1,350 USD
View
Price last confirmed 36 days ago
Retailer 3
-
$1,350 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
$1,365 USD
View
B+
Retailer 5
-
$1,385 USD
View
Retailer 6
-
$1,412 USD
View
Price last confirmed 36 days ago
B+
Retailer 7
-
$1,425 USD
View
B+
Retailer 8
-
$1,426 USD
View
B+
Retailer 9
-
$1,475 USD
View
Retailer 10
-
$1,558 USD
View
Price last confirmed 61 days ago
Retailer 11
-
$1,558 USD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$1,599 USD
View
B+
Retailer 13
-
$1,793 USD
View
B
Retailer 14
-
$2,393 USD
View
Most Expensive
NZ Jewellers
c87500d9-3436-4a17-a546-ca8cbea6dba6 · Sep 30
$3,293 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $1,197 USDSave up to $1,196 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
1.00ct Marquise
$1,197 USD