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Round|Lab Grown|IGI

1.05ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG492123220

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123220

Diamond specifications and retailer prices

From $780 SGD
$610 USD
As of October 30, 2026
Save $4,821 SGD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,601 SGD at MOH London · As of October 29, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct 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 LG492123220 or 492123220. Listed at 13 retailers as of October 29, 2026, with prices from $780 to $5,601, a $4,821 spread on the same certified stone. MOH London lists it at $5,601. 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

1.05
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123220
Dimensions6.54 × 6.56 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.54 mm6.56 mm1.05 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123220
Side View
Table 57.0%Crown 32.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

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: Oct 30
Current: $5,601 SGD|Low: $780 SGD|High: $5,645 SGD|Avg: $2,404 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$780 SGD
Retailer 9$1,494 SGD
Retailer 3$1,626 SGD
Retailer 13$1,675 SGD
Retailer 10$1,734 SGD
Retailer 12$1,734 SGD
Retailer 4$1,956 SGD
Retailer 7$2,276 SGD
Retailer 5$2,439 SGD
Retailer 11$2,752 SGD
Retailer 8$2,969 SGD
Retailer 14$3,250 SGD
Retailer 6$3,417 SGD
MOH London$5,601 SGD

36 data points across 14 retailers

13 retailers$780 SGD to $5,601 SGD

A
Cheapest Retailer
-
$780 SGD
$610 USD
B+
Retailer 2
-
$1,494 SGD
$1,169 USD
View
B+
Retailer 3
-
$1,626 SGD
$1,272 USD
View
B+
Retailer 4
-
$1,675 SGD
$1,310 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,734 SGD
$1,356 USD
View
Retailer 6
-
$1,734 SGD
$1,356 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$1,956 SGD
$1,530 USD
View
B+
Retailer 8
-
$2,276 SGD
£1,402 GBP
View
B
Retailer 9
-
$2,752 SGD
$2,153 USD
View
B
Retailer 10
-
$2,969 SGD
€2,212 EUR
View
B
Retailer 11
-
$3,250 SGD
$2,542 USD
View
B
Retailer 12
-
$3,417 SGD
$2,673 USD
View
Most Expensive
B
MOH London
LG492123220 · Oct 29
$5,601 SGD
£3,450 GBP
View
12 more retailers have this diamond
Prices start from $780 SGDSave up to $4,821 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
1.05ct Round
$780 SGD