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Round|Lab Grown|IGI

1.51ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG818644680

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644680

Diamond specifications and retailer prices

From $467 AUD
$327 USD
As of November 1, 2026
Save $3,600 AUD (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,067 AUD at Brilliant Earth · As of November 2, 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 LG818644680 or 818644680. Listed at 23 retailers as of November 1, 2026, with prices from $467 to $4,067, a $3,600 spread on the same certified stone. Brilliant Earth lists it at $4,067. 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 angle35.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644680
Dimensions7.34 × 7.37 × 4.48 mm
L/W Ratio1.00
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
7.34 mm7.37 mm1.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644680
Side View
Table 60.0%Crown 35.3°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,067 AUD|Low: $448 AUD|High: $4,780 AUD|Avg: $1,506 AUD|-14.9%
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
November 2, 2026
Retailer 3$467 AUD
Retailer 5$578 AUD
Retailer 4$778 AUD
Retailer 13$799 AUD
Retailer 8$820 AUD
Retailer 7$926 AUD
Retailer 9$997 AUD
Retailer 10$1,022 AUD
Retailer 12$1,347 AUD
Retailer 2$1,447 AUD
Retailer 6$2,183 AUD
Retailer 11$2,316 AUD
Retailer 14$2,768 AUD
Brilliant Earth$4,067 AUD

33 data points across 14 retailers

23 retailers$467 AUD to $4,067 AUD

A
Cheapest Retailer
-
$467 AUD
$327 USD
A
Retailer 2
-
$522 AUD
$366 USD
View
Final sale: no returns
A
Retailer 3
-
$541 AUD
$379 USD
View
A
Retailer 4
-
$578 AUD
$405 USD
View
Retailer 5
-
$578 AUD
$405 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$639 AUD
HK$3,500 HKD
View
A
Retailer 7
-
$778 AUD
$545 USD
View
A
Retailer 8
-
$799 AUD
$560 USD
View
A
Retailer 9
-
$820 AUD
£453 GBP
View
A
Retailer 10
-
$926 AUD
€618 EUR
View
A
Retailer 11
-
$997 AUD
ZAR 11,283 ZAR
View
A
Retailer 12
-
$1,022 AUD
£564 GBP
View
B+
Retailer 13
-
$1,233 AUD
$864 USD
View
B+
Retailer 14
-
$1,347 AUD
View
B+
Retailer 15
-
$1,447 AUD
$1,014 USD
View
B+
Retailer 16
-
$1,835 AUD
$1,286 USD
View
B
Retailer 17
-
$1,850 AUD
SGD 1,752 SGD
View
B
Retailer 18
-
$1,858 AUD
$1,302 USD
View
B
Retailer 19
-
$1,921 AUD
$1,346 USD
View
B
Retailer 20
-
$2,183 AUD
$1,530 USD
View
B+
Retailer 21
-
$2,316 AUD
£1,278 GBP
View
Retailer 22
-
$2,768 AUD
$1,940 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21133635A · Nov 2
$4,067 AUD
$2,850 USD
View
22 more retailers have this diamond
Prices start from $467 AUDSave up to $3,600 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
$467 AUD