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Radiant|Lab Grown|IGI

1.00ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG570331905

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG570331905

Diamond specifications and retailer prices

From $111 USD
As of October 30, 2026
Save $1,041 USD (90%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,152 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant 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 LG570331905 or 570331905. Listed at 19 retailers as of October 26, 2026, with prices from $111 to $1,152, a $1,041 spread on the same certified stone. MOH London lists it at $1,152. 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

1.00
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle27.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570331905
Dimensions8.10 × 4.63 × 3.06 mm
L/W Ratio1.75
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
8.10 mm4.63 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570331905
Side View
Table 61.5%Crown 35.5°Girdle: MediumPavilion 27.4°Culet: NoneDepth 66.1%

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: $1,152 USD|Low: $89 USD|High: $1,165 USD|Avg: $335 USD|+0.1%
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
October 30, 2026
Retailer 10$111 USD
Retailer 5$125 USD
Retailer 3$129 USD
Retailer 4$147 USD
Retailer 12$147 USD
Retailer 8$255 USD
Retailer 7$262 USD
Retailer 13$273 USD
Retailer 2$277 USD
Retailer 6$387 USD
Retailer 14$443 USD
Retailer 9$494 USD
Retailer 11$540 USD
MOH London$1,152 USD

43 data points across 14 retailers

19 retailers$111 USD to $1,152 USD

A
Cheapest Retailer
-
$111 USD
A
Retailer 2
-
$125 USD
View
Final sale: no returns
A
Retailer 3
-
$129 USD
View
A
Retailer 4
-
$147 USD
View
A
Retailer 5
-
$147 USD
View
A
Retailer 6
-
$166 USD
HK$1,300 HKD
View
A
Retailer 7
-
$255 USD
€243 EUR
View
A
Retailer 8
-
$262 USD
£206 GBP
View
A
Retailer 9
-
$272 USD
View
B+
Retailer 10
-
$273 USD
View
A
Retailer 11
-
$277 USD
£218 GBP
View
B+
Retailer 12
-
$387 USD
View
B+
Retailer 13
-
$388 USD
SGD 524 SGD
View
B+
Retailer 14
-
$443 USD
View
B+
Retailer 15
-
$467 USD
£368 GBP
View
B+
Retailer 16
-
$494 USD
View
B
Retailer 17
-
$515 USD
£405 GBP
View
B
Retailer 18
-
$540 USD
View
Most Expensive
B
MOH London
LG570331905 · Oct 26
$1,152 USD
£907 GBP
View
18 more retailers have this diamond
Prices start from $111 USDSave up to $1,041 USD

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
1.00ct Radiant
$111 USD