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Marquise|Lab Grown|IGI

1.09ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG817695830

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817695830

Diamond specifications and retailer prices

From $303 NZD
As of November 6, 2026
Save $1,681 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,984 NZD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG817695830 or 817695830. Listed at 19 retailers as of November 6, 2026, with prices from $303 to $1,984, a $1,681 spread on the same certified stone. Brilliant Earth lists it at $1,984. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695830
Dimensions10.94 × 5.27 × 3.28 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.94 mm5.27 mm1.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695830
Side View
Table 62.0%Crown 37°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.2%

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: $1,984 NZD|Low: $294 NZD|High: $1,984 NZD|Avg: $827 NZD|+0.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 5$303 NZD
Retailer 16$352 NZD
Retailer 17$375 NZD
Retailer 11$381 NZD
Retailer 12$446 NZD
Retailer 2$635 NZD
Retailer 13$660 NZD
Retailer 4$666 NZD
Retailer 6$673 NZD
Retailer 9$691 NZD
Retailer 3$864 NZD
Retailer 15$963 NZD
Retailer 10$1,037 NZD
Retailer 18$1,207 NZD
Retailer 8$1,306 NZD
Retailer 14$1,752 NZD
Retailer 7$1,968 NZD
Brilliant Earth$1,984 NZD

32 data points across 18 retailers

19 retailers$303 NZD to $1,984 NZD

A
Cheapest Retailer
-
$303 NZD
A
Retailer 2
-
$352 NZD
View
Retailer 3
-
$364 NZD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$375 NZD
View
A
Retailer 5
-
$381 NZD
View
Final sale: no returns
A
Retailer 6
-
$446 NZD
View
A
Retailer 7
-
$635 NZD
View
B+
Retailer 8
-
$660 NZD
View
B+
Retailer 9
-
$666 NZD
View
B+
Retailer 10
-
$673 NZD
View
Retailer 11
-
$691 NZD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$864 NZD
View
B+
Retailer 13
-
$963 NZD
View
Retailer 14
-
$1,037 NZD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,207 NZD
View
B
Retailer 16
-
$1,306 NZD
View
B
Retailer 17
-
$1,752 NZD
View
B
Retailer 18
-
$1,968 NZD
View
Most Expensive
B
Brilliant Earth
20750167A · Nov 6
$1,984 NZD
$1,100 USD
View
18 more retailers have this diamond
Prices start from $303 NZDSave up to $1,681 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
1.09ct Marquise
$303 NZD