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Radiant|Lab Grown|IGI

1.40ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG816616274

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

Certificate IGI LG816616274

Diamond specifications and retailer prices

From $498 AUD
$350 USD
As of October 30, 2026
Save $3,317 AUD (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,128 AUD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.4ct lab-grown radiant diamond

This 1.4ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816616274 or 816616274. Listed at 18 retailers as of October 30, 2026, with a 666% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616274
Dimensions7.62 × 5.62 × 3.83 mm
L/W Ratio1.36
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
7.62 mm5.62 mm1.40 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616274
Side View
Table 62.0%Crown 44.8°Girdle: Slightly ThickPavilion 36°Culet: NoneDepth 68.1%

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: Oct 30
Current: $4,128 AUD|Low: $498 AUD|High: $4,484 AUD|Avg: $1,755 AUD|-1.5%
Rare Carat
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 3$498 AUD
Retailer 14$740 AUD
Retailer 11$853 AUD
Retailer 9$894 AUD
Retailer 7$920 AUD
Retailer 4$963 AUD
Retailer 13$1,472 AUD
Retailer 10$1,599 AUD
Retailer 12$1,742 AUD
Retailer 6$1,912 AUD
Retailer 8$2,097 AUD
Retailer 5$2,162 AUD
Retailer 2$3,815 AUD
Rare Carat$4,128 AUD

28 data points across 14 retailers

18 retailers$498 AUD to $3,815 AUD

A
Cheapest Retailer
-
$498 AUD
$350 USD
Final sale: no returns
Retailer 2
-
$552 AUD
$388 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$645 AUD
$453 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$713 AUD
$501 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$740 AUD
$520 USD
View
A
Retailer 6
-
$853 AUD
$599 USD
View
A
Retailer 7
-
$894 AUD
ZAR 10,150 ZAR
View
A
Retailer 8
-
$920 AUD
£509 GBP
View
A
Retailer 9
-
$963 AUD
€644 EUR
View
B+
Retailer 10
-
$1,472 AUD
$1,034 USD
View
B+
Retailer 11
-
$1,599 AUD
$1,123 USD
View
B+
Retailer 12
-
$1,742 AUD
$1,224 USD
View
B+
Retailer 13
-
$1,912 AUD
SGD 1,815 SGD
View
B
Retailer 14
-
$2,097 AUD
£1,160 GBP
View
B
Retailer 15
-
$2,162 AUD
$1,519 USD
View
Retailer 16
-
$2,293 AUD
$1,611 USD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$3,815 AUD
$2,680 USD
View
Most Expensive
Rare Carat
PD-232045 · Oct 18
$4,128 AUD
$2,900 USD
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from $498 AUDSave up to $3,317 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
1.40ct Radiant
$498 AUD