Marquise|Natural|IGI

1.00ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 807646677

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 807646677

Diamond specifications and retailer prices

From $1,380 USD
SGD 1,865 SGD
As of October 29, 2026
Save $2,312 USD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,692 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct 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 807646677. Listed at 14 retailers as of October 27, 2026, with prices from $1,380 to $3,692, a $2,312 spread on the same certified stone. NZ Jewellers lists it at $3,692. 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
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.9°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 807646677
Dimensions9.18 × 5.25 × 3.40 mm
L/W Ratio1.75
Girdle conditionFaceted
Top View
9.18 mm5.25 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 807646677
Side View
Table 56.0%Crown 36.9°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 64.8%

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: Oct 29
Current: $1,463 USD|Low: $1,259 USD|High: $2,684 USD|Avg: $1,755 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$1,275 USD
Retailer 9$1,380 USD
Retailer 10$1,397 USD
Retailer 1$1,463 USD
Retailer 6$1,520 USD
Retailer 11$1,584 USD
Retailer 7$1,724 USD
Retailer 3$1,747 USD
Retailer 5$2,064 USD
Retailer 2$2,182 USD
Retailer 4$2,667 USD

33 data points across 11 retailers

14 retailers$1,380 USD to $3,692 USD

Retailer 1
-
$1,275 USD
€1,214 EUR
Price last confirmed 7 days ago
A
Retailer 2
-
$1,380 USD
SGD 1,865 SGD
View
A
Retailer 3
-
$1,390 USD
View
A
Retailer 4
-
$1,463 USD
View
A
Retailer 5
-
$1,510 USD
View
Retailer 6
-
$1,514 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,520 USD
View
Retailer 8
-
$1,584 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,724 USD
£1,357 GBP
View
B+
Retailer 10
-
$1,747 USD
View
B+
Retailer 11
-
$2,064 USD
€1,966 EUR
View
B+
Retailer 12
-
$2,182 USD
View
B+
Retailer 13
-
$2,667 USD
£2,100 GBP
View
Most Expensive
B
NZ Jewellers
4d1f7614-4d6b-415c-b36a-05c362ee557a · Oct 27
$3,692 USD
View
13 more retailers have this diamond
Prices start from $1,380 USDSave up to $2,312 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
$1,380 USD