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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 $197 NZD
$111 USD
As of October 30, 2026
Save $1,847 NZD (90%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,044 NZD 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 $197 to $2,044, a $1,847 spread on the same certified stone. MOH London lists it at $2,044. 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

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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: $2,044 NZD|Low: $158 NZD|High: $2,066 NZD|Avg: $595 NZD|+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
November 1, 2026
Retailer 10$197 NZD
Retailer 5$222 NZD
Retailer 3$229 NZD
Retailer 4$261 NZD
Retailer 12$261 NZD
Retailer 8$453 NZD
Retailer 7$465 NZD
Retailer 13$484 NZD
Retailer 2$492 NZD
Retailer 6$687 NZD
Retailer 14$786 NZD
Retailer 9$877 NZD
Retailer 11$958 NZD
MOH London$2,044 NZD

44 data points across 14 retailers

19 retailers$197 NZD to $2,044 NZD

A
Cheapest Retailer
-
$197 NZD
$111 USD
A
Retailer 2
-
$222 NZD
$125 USD
View
Final sale: no returns
A
Retailer 3
-
$229 NZD
$129 USD
View
A
Retailer 4
-
$261 NZD
$147 USD
View
Retailer 5
-
$261 NZD
$147 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$295 NZD
HK$1,300 HKD
View
A
Retailer 7
-
$453 NZD
€243 EUR
View
A
Retailer 8
-
$465 NZD
£206 GBP
View
A
Retailer 9
-
$483 NZD
$272 USD
View
B+
Retailer 10
-
$484 NZD
$273 USD
View
A
Retailer 11
-
$492 NZD
£218 GBP
View
B+
Retailer 12
-
$687 NZD
$387 USD
View
B+
Retailer 13
-
$688 NZD
SGD 524 SGD
View
B+
Retailer 14
-
$786 NZD
$443 USD
View
B+
Retailer 15
-
$829 NZD
£368 GBP
View
B+
Retailer 16
-
$877 NZD
$494 USD
View
B
Retailer 17
-
$913 NZD
£405 GBP
View
B
Retailer 18
-
$958 NZD
$540 USD
View
Most Expensive
B
MOH London
LG570331905 · Oct 26
$2,044 NZD
£907 GBP
View
18 more retailers have this diamond
Prices start from $197 NZDSave up to $1,847 NZD

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
$197 NZD