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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG677580013

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

Certificate IGI LG677580013

Diamond specifications and retailer prices

From $294 AUD
As of November 6, 2026
Save $882 AUD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,706 AUD at MOH London · As of October 25, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG677580013 or 677580013. Listed at 15 retailers as of November 4, 2026, with a 300% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677580013
Dimensions6.88 × 4.92 × 3.27 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm4.92 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677580013
Side View
Table 66.0%Crown 37.4°Girdle: STK-THKPavilionCulet: NoneDepth 66.5%

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: $1,706 AUD|Low: $282 AUD|High: $1,725 AUD|Avg: $673 AUD|+4.1%
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 6, 2026
Retailer 9$294 AUD
Retailer 4$329 AUD
Retailer 14$341 AUD
Retailer 3$364 AUD
Retailer 11$364 AUD
Retailer 5$445 AUD
Retailer 2$470 AUD
Retailer 13$633 AUD
Retailer 7$662 AUD
Retailer 6$707 AUD
Retailer 10$844 AUD
Retailer 12$1,172 AUD
Retailer 8$1,176 AUD
MOH London$1,706 AUD

45 data points across 14 retailers

15 retailers$294 AUD to $1,176 AUD

A
Cheapest Retailer
-
$294 AUD
A
Retailer 2
-
$329 AUD
View
Final sale: no returns
A
Retailer 3
-
$341 AUD
View
A
Retailer 4
-
$364 AUD
View
Retailer 5
-
$364 AUD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$445 AUD
View
A
Retailer 7
-
$470 AUD
View
B+
Retailer 8
-
$633 AUD
View
B+
Retailer 9
-
$662 AUD
View
B+
Retailer 10
-
$707 AUD
View
B+
Retailer 11
-
$726 AUD
View
B+
Retailer 12
-
$844 AUD
View
B
Retailer 13
-
$1,172 AUD
View
B
Retailer 14
-
$1,176 AUD
View
Most Expensive
MOH London
LG677580013 · Oct 25
$1,706 AUD
£923 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $294 AUDSave up to $882 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
$294 AUD