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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 $215 SGD
As of November 6, 2026
Save $1,190 SGD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,405 SGD 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 $215 to $1,405, a $1,190 spread on the same certified stone. Brilliant Earth lists it at $1,405. 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

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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: $1,405 SGD|Low: $208 SGD|High: $1,405 SGD|Avg: $586 SGD|+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$215 SGD
Retailer 16$249 SGD
Retailer 17$266 SGD
Retailer 11$270 SGD
Retailer 12$315 SGD
Retailer 2$450 SGD
Retailer 13$467 SGD
Retailer 4$471 SGD
Retailer 6$476 SGD
Retailer 9$489 SGD
Retailer 3$612 SGD
Retailer 15$682 SGD
Retailer 10$734 SGD
Retailer 18$855 SGD
Retailer 8$925 SGD
Retailer 14$1,240 SGD
Retailer 7$1,394 SGD
Brilliant Earth$1,405 SGD

32 data points across 18 retailers

19 retailers$215 SGD to $1,405 SGD

A
Cheapest Retailer
-
$215 SGD
A
Retailer 2
-
$249 SGD
View
Retailer 3
-
$258 SGD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$266 SGD
View
A
Retailer 5
-
$270 SGD
View
Final sale: no returns
A
Retailer 6
-
$315 SGD
View
Retailer 7
-
$450 SGD
View
B+
Retailer 8
-
$467 SGD
View
B+
Retailer 9
-
$471 SGD
View
B+
Retailer 10
-
$476 SGD
View
Retailer 11
-
$489 SGD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$612 SGD
View
B+
Retailer 13
-
$682 SGD
View
Retailer 14
-
$734 SGD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$855 SGD
View
B
Retailer 16
-
$925 SGD
View
B
Retailer 17
-
$1,240 SGD
View
B
Retailer 18
-
$1,394 SGD
View
Most Expensive
B
Brilliant Earth
20750167A · Nov 6
$1,405 SGD
$1,100 USD
View
18 more retailers have this diamond
Prices start from $215 SGDSave up to $1,190 SGD

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
$215 SGD