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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 $158 AUD
$111 USD
As of October 30, 2026
Save $1,482 AUD (90%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,640 AUD 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 $158 to $1,640, a $1,482 spread on the same certified stone. MOH London lists it at $1,640. 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
Colour
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: $1,640 AUD|Low: $127 AUD|High: $1,658 AUD|Avg: $478 AUD|+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 31, 2026
Retailer 10$158 AUD
Retailer 5$178 AUD
Retailer 3$184 AUD
Retailer 4$209 AUD
Retailer 12$209 AUD
Retailer 8$363 AUD
Retailer 7$373 AUD
Retailer 13$389 AUD
Retailer 2$391 AUD
Retailer 6$551 AUD
Retailer 14$631 AUD
Retailer 9$703 AUD
Retailer 11$769 AUD
MOH London$1,640 AUD

43 data points across 14 retailers

19 retailers$158 AUD to $1,640 AUD

A
Cheapest Retailer
-
$158 AUD
$111 USD
A
Retailer 2
-
$178 AUD
$125 USD
View
Final sale: no returns
A
Retailer 3
-
$184 AUD
$129 USD
View
A
Retailer 4
-
$209 AUD
$147 USD
View
A
Retailer 5
-
$209 AUD
$147 USD
View
A
Retailer 6
-
$237 AUD
HK$1,300 HKD
View
Retailer 7
-
$363 AUD
€243 EUR
View
Price last confirmed 8 days ago
A
Retailer 8
-
$373 AUD
£206 GBP
View
A
Retailer 9
-
$387 AUD
$272 USD
View
B+
Retailer 10
-
$389 AUD
$273 USD
View
A
Retailer 11
-
$391 AUD
£216 GBP
View
B+
Retailer 12
-
$551 AUD
$387 USD
View
B+
Retailer 13
-
$552 AUD
SGD 524 SGD
View
B+
Retailer 14
-
$631 AUD
$443 USD
View
B+
Retailer 15
-
$665 AUD
£368 GBP
View
B+
Retailer 16
-
$703 AUD
$494 USD
View
B
Retailer 17
-
$733 AUD
£405 GBP
View
B
Retailer 18
-
$769 AUD
$540 USD
View
Most Expensive
B
MOH London
LG570331905 · Oct 26
$1,640 AUD
£907 GBP
View
18 more retailers have this diamond
Prices start from $158 AUDSave up to $1,482 AUD

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
$158 AUD