CaratHunter
Plans
Round|Lab Grown|IGI

1.81ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG818658778

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818658778

Diamond specifications and retailer prices

From $550 AUD
$386 USD
As of October 30, 2026
Save $4,134 AUD (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,684 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818658778 or 818658778. Listed at 21 retailers as of October 29, 2026, with prices from $550 to $4,684, a $4,134 spread on the same certified stone. Brilliant Earth lists it at $4,684. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658778
Dimensions7.81 × 7.87 × 4.83 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
7.81 mm7.87 mm1.81 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658778
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.6%

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: $4,684 AUD|Low: $550 AUD|High: $4,684 AUD|Avg: $1,713 AUD
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
October 30, 2026
Retailer 5$550 AUD
Retailer 16$861 AUD
Retailer 3$876 AUD
Retailer 10$920 AUD
Retailer 12$987 AUD
Retailer 15$1,049 AUD
Retailer 11$1,094 AUD
Retailer 6$1,389 AUD
Retailer 14$1,418 AUD
Retailer 4$1,733 AUD
Retailer 8$1,817 AUD
Retailer 7$2,023 AUD
Retailer 2$2,306 AUD
Retailer 17$2,362 AUD
Retailer 13$2,399 AUD
Retailer 9$3,687 AUD
Brilliant Earth$4,684 AUD

27 data points across 17 retailers

21 retailers$550 AUD to $4,684 AUD

Retailer 1
-
$500 AUD
$351 USD
Price last confirmed 20 days ago
A
Retailer 2
-
$550 AUD
$386 USD
View
Final sale: no returns
Retailer 3
-
$619 AUD
$435 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$619 AUD
$435 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
$861 AUD
$605 USD
View
A
Retailer 6
-
$876 AUD
$615 USD
View
A
Retailer 7
-
$920 AUD
£509 GBP
View
A
Retailer 8
-
$987 AUD
€660 EUR
View
A
Retailer 9
-
$1,049 AUD
ZAR 11,907 ZAR
View
A
Retailer 10
-
$1,094 AUD
£605 GBP
View
A
Retailer 11
-
$1,389 AUD
$975 USD
View
A
Retailer 12
-
$1,418 AUD
View
A
Retailer 13
-
$1,733 AUD
$1,217 USD
View
B+
Retailer 14
-
$1,817 AUD
$1,276 USD
View
Retailer 15
-
$1,990 AUD
$1,398 USD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$2,023 AUD
$1,421 USD
View
B+
Retailer 17
-
$2,306 AUD
$1,620 USD
View
B+
Retailer 18
-
$2,362 AUD
$1,659 USD
View
B+
Retailer 19
-
$2,399 AUD
£1,327 GBP
View
B
Retailer 20
-
$3,687 AUD
$2,590 USD
View
Most Expensive
B
Brilliant Earth
21580806A · Oct 29
$4,684 AUD
$3,290 USD
View
20 more retailers have this diamond
Prices start from $550 AUDSave up to $4,134 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
1.81ct Round
$550 AUD