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Round|Lab Grown|IGI

1.09ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG451057063

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057063

Diamond specifications and retailer prices

From $818 SGD
$640 USD
As of October 30, 2026
Save $4,991 SGD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,809 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057063 or 451057063. Listed at 13 retailers as of October 29, 2026, with prices from $818 to $5,809, a $4,991 spread on the same certified stone. MOH London lists it at $5,809. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057063
Dimensions6.53 × 6.56 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.53 mm6.56 mm1.09 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057063
Side View
Table 56.5%Crown 35.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

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 30
Current: $5,809 SGD|Low: $818 SGD|High: $5,856 SGD|Avg: $2,481 SGD|-0.5%
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
October 30, 2026
Retailer 2$818 SGD
Retailer 9$1,551 SGD
Retailer 13$1,686 SGD
Retailer 3$1,736 SGD
Retailer 10$1,799 SGD
Retailer 12$1,799 SGD
Retailer 4$2,020 SGD
Retailer 7$2,361 SGD
Retailer 5$2,520 SGD
Retailer 11$2,852 SGD
Retailer 8$3,078 SGD
Retailer 14$3,371 SGD
Retailer 6$3,445 SGD
MOH London$5,809 SGD

37 data points across 14 retailers

13 retailers$818 SGD to $5,809 SGD

A
Cheapest Retailer
-
$818 SGD
$640 USD
B+
Retailer 2
-
$1,551 SGD
$1,213 USD
View
B+
Retailer 3
-
$1,686 SGD
$1,319 USD
View
B+
Retailer 4
-
$1,736 SGD
$1,358 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,799 SGD
$1,407 USD
View
Retailer 6
-
$1,799 SGD
$1,407 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$2,020 SGD
$1,580 USD
View
B+
Retailer 8
-
$2,361 SGD
£1,454 GBP
View
B
Retailer 9
-
$2,852 SGD
$2,231 USD
View
B
Retailer 10
-
$3,078 SGD
€2,293 EUR
View
B
Retailer 11
-
$3,371 SGD
$2,637 USD
View
B
Retailer 12
-
$3,445 SGD
$2,695 USD
View
Most Expensive
B
MOH London
LG451057063 · Oct 29
$5,809 SGD
£3,578 GBP
View
12 more retailers have this diamond
Prices start from $818 SGDSave up to $4,991 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
$818 SGD