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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG490176326

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

Certificate IGI LG490176326

Diamond specifications and retailer prices

From $240 NZD
As of November 6, 2026
Save $2,069 NZD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,309 NZD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490176326 or 490176326. Listed at 20 retailers as of November 6, 2026, with prices from $240 to $2,309, a $2,069 spread on the same certified stone. Do Amore Diamonds lists it at $2,309. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490176326
Dimensions7.05 × 4.97 × 3.39 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.05 mm4.97 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490176326
Side View
Table 63.0%Crown 40.1°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 68.2%

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: Nov 6
Current: $2,309 NZD|Low: $231 NZD|High: $2,309 NZD|Avg: $744 NZD
Do Amore Diamonds
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
Retailer 15
November 6, 2026
Retailer 9$240 NZD
Retailer 7$269 NZD
Retailer 14$278 NZD
Retailer 15$298 NZD
Retailer 3$428 NZD
Retailer 5$465 NZD
Retailer 10$561 NZD
Retailer 2$579 NZD
Retailer 13$622 NZD
Retailer 12$713 NZD
Retailer 6$992 NZD
Retailer 4$1,010 NZD
Retailer 8$1,055 NZD
Retailer 11$1,530 NZD
Do Amore Diamonds$2,309 NZD

43 data points across 15 retailers

20 retailers$240 NZD to $2,309 NZD

A
Cheapest Retailer
-
$240 NZD
A
Retailer 2
-
$269 NZD
View
Final sale: no returns
A
Retailer 3
-
$278 NZD
View
A
Retailer 4
-
$298 NZD
View
A
Retailer 5
-
$395 NZD
View
B+
Retailer 6
-
$465 NZD
View
A
Retailer 7
-
$507 NZD
View
A
Retailer 8
-
$561 NZD
View
A
Retailer 9
-
$579 NZD
View
A
Retailer 10
-
$622 NZD
View
B+
Retailer 11
-
$713 NZD
View
B+
Retailer 12
-
$741 NZD
View
B
Retailer 13
-
$952 NZD
View
B+
Retailer 14
-
$992 NZD
View
B+
Retailer 15
-
$1,010 NZD
View
B+
Retailer 16
-
$1,055 NZD
View
B
Retailer 17
-
$1,248 NZD
View
B
Retailer 18
-
$1,369 NZD
View
B
Retailer 19
-
$1,530 NZD
View
Most Expensive
B
Do Amore Diamonds
27-4E1C3A675 · Nov 6
$2,309 NZD
$1,280 USD
View
19 more retailers have this diamond
Prices start from $240 NZDSave up to $2,069 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
$240 NZD