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Round|Lab Grown|IGI

1.55ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG768651059

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768651059

Diamond specifications and retailer prices

From $472 AUD
$332 USD
As of October 29, 2026
Save $4,334 AUD (90%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $4,806 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768651059 or 768651059. Listed at 28 retailers as of October 28, 2026, with prices from $472 to $4,806, a $4,334 spread on the same certified stone. Brilliant Earth lists it at $4,806. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768651059
Dimensions7.35 × 7.40 × 4.60 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
7.35 mm7.40 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768651059
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
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: Oct 29
Current: $4,806 AUD|Low: $454 AUD|High: $5,688 AUD|Avg: $1,567 AUD|-15.5%
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
October 29, 2026
Retailer 5$472 AUD
Retailer 14$536 AUD
Retailer 7$586 AUD
Retailer 8$789 AUD
Retailer 13$803 AUD
Retailer 2$935 AUD
Retailer 9$1,006 AUD
Retailer 11$1,006 AUD
Retailer 12$1,040 AUD
Retailer 10$1,365 AUD
Retailer 16$1,449 AUD
Retailer 4$1,994 AUD
Retailer 15$2,351 AUD
Retailer 6$2,501 AUD
Retailer 3$3,277 AUD
Brilliant Earth$4,806 AUD

34 data points across 16 retailers

28 retailers$472 AUD to $4,806 AUD

A
Cheapest Retailer
-
$472 AUD
$332 USD
A
Retailer 2
-
$536 AUD
$377 USD
View
Final sale: no returns
A
Retailer 3
-
$547 AUD
$385 USD
View
A
Retailer 4
-
$586 AUD
$412 USD
View
A
Retailer 5
-
$586 AUD
$412 USD
View
A
Retailer 6
-
$655 AUD
HK$3,600 HKD
View
A
Retailer 7
-
$789 AUD
$555 USD
View
A
Retailer 8
-
$803 AUD
$565 USD
View
A
Retailer 9
-
$935 AUD
€626 EUR
View
A
Retailer 10
-
$1,006 AUD
View
A
Retailer 11
-
$1,006 AUD
ZAR 11,435 ZAR
View
A
Retailer 12
-
$1,040 AUD
£576 GBP
View
A
Retailer 13
-
$1,059 AUD
$745 USD
View
A
Retailer 14
-
$1,365 AUD
View
A
Retailer 15
-
$1,438 AUD
$1,011 USD
View
B+
Retailer 16
-
$1,449 AUD
$1,019 USD
View
B+
Retailer 17
-
$1,597 AUD
$1,123 USD
View
Price last confirmed 43 days ago
B+
Retailer 18
-
$1,877 AUD
SGD 1,784 SGD
View
B+
Retailer 19
-
$1,883 AUD
$1,324 USD
View
B+
Retailer 20
-
$1,945 AUD
$1,368 USD
View
B+
Retailer 21
-
$1,994 AUD
$1,402 USD
View
B+
Retailer 22
-
$2,212 AUD
$1,556 USD
View
B+
Retailer 23
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$2,297 AUD
$1,615 USD
View
B+
Retailer 24
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$2,351 AUD
£1,302 GBP
View
B+
Retailer 25
-
$2,501 AUD
View
Price last confirmed 21 days ago
B+
Retailer 26
-
$3,277 AUD
$2,305 USD
View
Price last confirmed 11 days ago
B
Retailer 27
-
$4,135 AUD
£2,290 GBP
View
Most Expensive
B
Brilliant Earth
18185851A · Oct 28
$4,806 AUD
$3,380 USD
View
27 more retailers have this diamond
Prices start from $472 AUDSave up to $4,334 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
1.55ct Round
$472 AUD