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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG816624136

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816624136

Diamond specifications and retailer prices

From $655 AUD
$461 USD
As of October 29, 2026
Save $3,880 AUD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,536 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816624136 or 816624136. Listed at 20 retailers as of October 28, 2026, with prices from $655 to $4,536, a $3,880 spread on the same certified stone. Brilliant Earth lists it at $4,536. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816624136
Dimensions7.42 × 7.36 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.42 mm7.36 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816624136
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A+
Exceptional
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 29
Current: $4,536 AUD|Low: $655 AUD|High: $5,019 AUD|Avg: $1,895 AUD|-9.6%
Brilliant Earth
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 29, 2026
Retailer 10$655 AUD
Retailer 5$732 AUD
Retailer 6$734 AUD
Retailer 4$813 AUD
Retailer 12$853 AUD
Retailer 15$1,145 AUD
Retailer 18$1,202 AUD
Retailer 13$1,244 AUD
Retailer 9$1,256 AUD
Retailer 2$1,339 AUD
Retailer 14$1,397 AUD
Retailer 19$1,438 AUD
Retailer 7$1,889 AUD
Retailer 16$2,185 AUD
Retailer 20$2,613 AUD
Retailer 8$2,657 AUD
Retailer 3$2,855 AUD
Retailer 17$2,882 AUD
Retailer 11$3,566 AUD
Brilliant Earth$4,536 AUD

28 data points across 20 retailers

20 retailers$655 AUD to $4,536 AUD

A+
Cheapest Retailer
-
$655 AUD
$461 USD
A
Retailer 2
-
$732 AUD
$515 USD
View
Final sale: no returns
A
Retailer 3
-
$734 AUD
$516 USD
View
A
Retailer 4
-
$813 AUD
$572 USD
View
A
Retailer 5
-
$853 AUD
$600 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$1,145 AUD
$805 USD
View
A
Retailer 7
-
$1,202 AUD
$845 USD
View
A
Retailer 8
-
$1,244 AUD
€833 EUR
View
A
Retailer 9
-
$1,256 AUD
$883 USD
View
A
Retailer 10
-
$1,339 AUD
£741 GBP
View
A
Retailer 11
-
$1,397 AUD
ZAR 15,873 ZAR
View
A
Retailer 12
-
$1,438 AUD
$1,011 USD
View
B+
Retailer 13
-
$1,889 AUD
$1,329 USD
View
B+
Retailer 14
-
$2,185 AUD
$1,537 USD
View
B+
Retailer 15
-
$2,613 AUD
$1,838 USD
View
B+
Retailer 16
-
$2,657 AUD
$1,869 USD
View
B+
Retailer 17
-
$2,855 AUD
$2,008 USD
View
B+
Retailer 18
-
$2,882 AUD
$2,027 USD
View
B
Retailer 19
-
$3,566 AUD
£1,975 GBP
View
Most Expensive
B
Brilliant Earth
21018569A · Oct 28
$4,536 AUD
$3,190 USD
View
19 more retailers have this diamond
Prices start from $655 AUDSave up to $3,880 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+
1.51ct Round
$655 AUD