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Round|Lab Grown|IGI

1.05ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG451055603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055603

Diamond specifications and retailer prices

From $780 SGD
$610 USD
As of October 30, 2026
Save $4,331 SGD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,111 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055603 or 451055603. Listed at 11 retailers as of October 29, 2026, with prices from $780 to $5,111, a $4,331 spread on the same certified stone. MOH London lists it at $5,111. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055603
Dimensions6.44 × 6.47 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.44 mm6.47 mm1.05 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055603
Side View
Table 57.5%Crown 34.9°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.4%

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: $5,111 SGD|Low: $780 SGD|High: $5,145 SGD|Avg: $2,365 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
October 30, 2026
Retailer 2$780 SGD
Retailer 5$1,292 SGD
Retailer 9$1,446 SGD
Retailer 6$1,498 SGD
Retailer 8$1,498 SGD
Retailer 10$2,155 SGD
Retailer 7$2,394 SGD
Retailer 4$2,573 SGD
Retailer 11$3,132 SGD
Retailer 3$3,355 SGD
MOH London$5,111 SGD

20 data points across 11 retailers

11 retailers$780 SGD to $5,111 SGD

A
Cheapest Retailer
-
$780 SGD
$610 USD
B+
Retailer 2
-
$1,292 SGD
$1,011 USD
View
B+
Retailer 3
-
$1,406 SGD
$1,100 USD
View
B+
Retailer 4
-
$1,446 SGD
$1,131 USD
View
Final sale: no returns
Retailer 5
-
$1,498 SGD
$1,172 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$1,498 SGD
$1,172 USD
View
B
Retailer 7
-
$2,394 SGD
$1,873 USD
View
B
Retailer 8
-
$2,573 SGD
€1,917 EUR
View
B
Retailer 9
-
$2,810 SGD
$2,198 USD
View
B
Retailer 10
-
$3,132 SGD
$2,450 USD
View
Most Expensive
B
MOH London
LG451055603 · Oct 29
$5,111 SGD
£3,148 GBP
View
10 more retailers have this diamond
Prices start from $780 SGDSave up to $4,331 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