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Round|Lab Grown|IGI

1.09ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686663

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686663

Diamond specifications and retailer prices

From $183 SGD
$143 USD
As of October 29, 2026
Save $884 SGD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,067 SGD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686663 or 818686663. Listed at 15 retailers as of October 29, 2026, with prices from $183 to $1,067, a $884 spread on the same certified stone. MOH London lists it at $1,067. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686663
Dimensions6.60 × 6.69 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.60 mm6.69 mm1.09 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686663
Side View
Table 56.0%Crown 35.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.4%

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: Oct 29
Current: $1,067 SGD|Low: $183 SGD|High: $1,136 SGD|Avg: $522 SGD|-6.1%
MOH London
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
October 30, 2026
Retailer 10$183 SGD
Retailer 2$212 SGD
Retailer 6$228 SGD
Retailer 7$240 SGD
Retailer 9$389 SGD
Retailer 11$403 SGD
Retailer 15$423 SGD
Retailer 14$435 SGD
Retailer 8$507 SGD
Retailer 12$545 SGD
Retailer 4$573 SGD
Retailer 13$626 SGD
Retailer 5$730 SGD
Retailer 3$801 SGD
MOH London$1,067 SGD

27 data points across 15 retailers

15 retailers$183 SGD to $1,067 SGD

A
Cheapest Retailer
-
$183 SGD
$143 USD
A
Retailer 2
-
$212 SGD
$166 USD
View
A
Retailer 3
-
$228 SGD
$178 USD
View
A
Retailer 4
-
$240 SGD
$188 USD
View
A
Retailer 5
-
$389 SGD
£240 GBP
View
A
Retailer 6
-
$403 SGD
€300 EUR
View
A
Retailer 7
-
$423 SGD
$331 USD
View
A
Retailer 8
-
$435 SGD
$340 USD
View
B+
Retailer 9
-
$507 SGD
£312 GBP
View
B+
Retailer 10
-
$545 SGD
$426 USD
View
B+
Retailer 11
-
$573 SGD
$448 USD
View
B+
Retailer 12
-
$626 SGD
$490 USD
View
B+
Retailer 13
-
$730 SGD
$571 USD
View
B
Retailer 14
-
$801 SGD
$627 USD
View
Most Expensive
B
MOH London
LG818686663 · Oct 29
$1,067 SGD
£657 GBP
View
14 more retailers have this diamond
Prices start from $183 SGDSave up to $884 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 Round
$183 SGD