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Marquise|Natural|IGI

1.00ct I VS1 Marquise Natural Diamond

VG • I/VS1 • IGI 751508138

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 751508138

Diamond specifications and retailer prices

From $2,900 AUD
As of November 1, 2026
Save $580 AUD (17%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,480 AUD at NZ Jewellers · As of October 21, 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 751508138. Listed at 16 retailers as of November 1, 2026, with a relatively tight 20% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle39.4°
OriginNatural
Grading LabIGI
CertificateIGI 751508138
Dimensions9.69 × 5.07 × 3.31 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Top View
9.69 mm5.07 mm1.00 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 751508138
Side View
Table 59.0%Crown 38°Girdle: THK-VTKPavilion 39.4°Culet: NoneDepth 65.3%

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: $2,900 AUD|Low: $2,900 AUD|High: $6,344 AUD|Avg: $4,060 AUD|-19.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 28, 2026
Retailer 1$2,900 AUD
Retailer 11$3,236 AUD
Retailer 2$3,303 AUD
Retailer 10$3,480 AUD
Retailer 3$3,577 AUD
Retailer 9$3,766 AUD
Retailer 4$3,817 AUD
Retailer 7$4,343 AUD
Retailer 6$4,434 AUD
Retailer 8$5,158 AUD
Retailer 5$6,301 AUD

30 data points across 11 retailers

16 retailers$2,900 AUD to $3,480 AUD

A
Cheapest Retailer
-
$2,900 AUD
Retailer 2
-
$3,231 AUD
View
Price last confirmed 17 days ago
Retailer 3
-
$3,236 AUD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$3,480 AUD
View
Retailer 5
-
$3,577 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$3,577 AUD
View
Price last confirmed 17 days ago
Retailer 7
-
$3,743 AUD
View
Price last confirmed 20 days ago
Retailer 8
-
$3,766 AUD
View
Price last confirmed 16 days ago
Retailer 9
-
$3,777 AUD
View
Price last confirmed 19 days ago
Retailer 10
-
$3,817 AUD
View
Price last confirmed 16 days ago
Retailer 11
-
$4,128 AUD
View
Price last confirmed 61 days ago
Retailer 12
-
$4,128 AUD
View
Price last confirmed 16 days ago
Retailer 13
-
$4,343 AUD
View
Price last confirmed 20 days ago
Retailer 14
-
$5,158 AUD
View
Price last confirmed 16 days ago
Retailer 15
-
$6,301 AUD
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
d487b30c-d2f0-4b2f-9b34-cb46c541b124 · Oct 21
$7,480 AUD
$5,236 USD
View
Price last confirmed 15 days ago
15 more retailers have this diamond
Prices start from $2,900 AUDSave up to $580 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
$2,900 AUD