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Round|Lab Grown|IGI

1.51ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG674507997

Shape and cutting style on the report: Round brilliant

Certificate IGI LG674507997

Diamond specifications and retailer prices

From $548 AUD
$385 USD
As of November 1, 2026
Save $3,908 AUD (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $4,456 AUD at Brilliant Earth · As of October 31, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG674507997 or 674507997. Listed at 24 retailers as of October 31, 2026, with prices from $548 to $4,456, a $3,908 spread on the same certified stone. Brilliant Earth lists it at $4,456. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674507997
Dimensions7.44 × 7.39 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.44 mm7.39 mm1.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674507997
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.8%

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 1
Current: $4,456 AUD|Low: $349 AUD|High: $4,456 AUD|Avg: $1,205 AUD|+1.3%
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
November 2, 2026
Retailer 11$349 AUD
Retailer 6$548 AUD
Retailer 19$569 AUD
Retailer 9$605 AUD
Retailer 2$864 AUD
Retailer 15$918 AUD
Retailer 7$963 AUD
Retailer 18$972 AUD
Retailer 3$979 AUD
Retailer 12$1,050 AUD
Retailer 13$1,090 AUD
Retailer 17$1,239 AUD
Retailer 8$1,404 AUD
Retailer 16$1,515 AUD
Retailer 5$2,017 AUD
Retailer 10$2,285 AUD
Retailer 4$2,357 AUD
Retailer 14$2,379 AUD
Brilliant Earth$4,456 AUD

27 data points across 19 retailers

24 retailers$548 AUD to $4,456 AUD

Retailer 1
-
$349 AUD
$245 USD
Price last confirmed 14 days ago
Retailer 2
-
$468 AUD
$329 USD
View
Price last confirmed 25 days ago
A
Retailer 3
-
$548 AUD
$385 USD
View
Final sale: no returns
Retailer 4
-
$565 AUD
$397 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
$569 AUD
$400 USD
View
Retailer 6
-
$605 AUD
$425 USD
View
Price last confirmed 30 days ago
Retailer 7
-
$605 AUD
$425 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$864 AUD
£478 GBP
View
A
Retailer 9
-
$918 AUD
$645 USD
View
A
Retailer 10
-
$963 AUD
€644 EUR
View
A
Retailer 11
-
$972 AUD
$683 USD
View
A
Retailer 12
-
$979 AUD
$688 USD
View
A
Retailer 13
-
$1,050 AUD
ZAR 11,913 ZAR
View
B+
Retailer 14
-
$1,090 AUD
£603 GBP
View
B+
Retailer 15
-
$1,239 AUD
$870 USD
View
B+
Retailer 16
-
$1,404 AUD
View
B+
Retailer 17
-
$1,515 AUD
$1,064 USD
View
Retailer 18
-
$1,943 AUD
$1,365 USD
View
Price last confirmed 25 days ago
B
Retailer 19
-
$2,017 AUD
$1,417 USD
View
B
Retailer 20
-
$2,285 AUD
$1,605 USD
View
B
Retailer 21
-
$2,357 AUD
$1,656 USD
View
B
Retailer 22
-
$2,379 AUD
£1,316 GBP
View
Retailer 23
-
$2,839 AUD
$1,994 USD
View
Price last confirmed 67 days ago
Most Expensive
B
Brilliant Earth
14081461A · Oct 31
$4,456 AUD
$3,130 USD
View
23 more retailers have this diamond
Prices start from $548 AUDSave up to $3,908 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
$548 AUD