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Round|Lab Grown|IGI

1.91ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG607370993

Shape and cutting style on the report: Round brilliant

Certificate IGI LG607370993

Diamond specifications and retailer prices

From $655 AUD
$460 USD
As of October 29, 2026
Save $6,149 AUD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,804 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.91ct lab-grown round diamond

This 1.91ct 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 LG607370993 or 607370993. Listed at 25 retailers as of October 29, 2026, with prices from $655 to $6,804, a $6,149 spread on the same certified stone. Brilliant Earth lists it at $6,804. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607370993
Dimensions7.95 × 7.90 × 4.90 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
7.95 mm7.90 mm1.91 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607370993
Side View
Table 58.0%Crown 35.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.9%

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: Oct 29
Current: $6,804 AUD|Low: $655 AUD|High: $7,516 AUD|Avg: $2,460 AUD|-9.5%
Brilliant Earth
Retailer 2
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Retailer 23
October 29, 2026
Retailer 4$655 AUD
Retailer 13$733 AUD
Retailer 14$734 AUD
Retailer 21$813 AUD
Retailer 7$893 AUD
Retailer 20$1,018 AUD
Retailer 23$1,089 AUD
Retailer 3$1,171 AUD
Retailer 17$1,243 AUD
Retailer 2$1,338 AUD
Retailer 19$1,397 AUD
Retailer 18$1,719 AUD
Retailer 5$1,892 AUD
Retailer 6$1,964 AUD
Retailer 9$2,583 AUD
Retailer 12$2,613 AUD
Retailer 11$2,657 AUD
Retailer 15$2,779 AUD
Retailer 8$2,882 AUD
Retailer 16$2,951 AUD
Retailer 22$2,990 AUD
Retailer 10$3,042 AUD
Brilliant Earth$6,804 AUD

30 data points across 23 retailers

25 retailers$655 AUD to $6,804 AUD

A
Cheapest Retailer
-
$655 AUD
$460 USD
A
Retailer 2
-
$733 AUD
$515 USD
View
Final sale: no returns
A
Retailer 3
-
$734 AUD
$516 USD
View
A
Retailer 4
-
$813 AUD
$571 USD
View
A
Retailer 5
-
$893 AUD
HK$4,900 HKD
View
A
Retailer 6
-
$1,018 AUD
$715 USD
View
A
Retailer 7
-
$1,089 AUD
$765 USD
View
A
Retailer 8
-
$1,117 AUD
$785 USD
View
Price last confirmed 13 days ago
A
Retailer 9
-
$1,171 AUD
$823 USD
View
A
Retailer 10
-
$1,243 AUD
€832 EUR
View
A
Retailer 11
-
$1,338 AUD
£740 GBP
View
A
Retailer 12
-
$1,397 AUD
ZAR 15,852 ZAR
View
A
Retailer 13
-
$1,719 AUD
View
A
Retailer 14
-
$1,892 AUD
$1,329 USD
View
B+
Retailer 15
-
$1,964 AUD
$1,380 USD
View
B+
Retailer 16
-
$2,583 AUD
SGD 2,452 SGD
View
B+
Retailer 17
-
$2,613 AUD
$1,836 USD
View
B+
Retailer 18
-
$2,657 AUD
$1,866 USD
View
B+
Retailer 19
-
$2,779 AUD
View
Price last confirmed 8 days ago
B+
Retailer 20
-
$2,852 AUD
$2,004 USD
View
B+
Retailer 21
-
$2,882 AUD
$2,025 USD
View
B+
Retailer 22
-
$2,951 AUD
View
Price last confirmed 21 days ago
B+
Retailer 23
-
$2,990 AUD
£1,654 GBP
View
B+
Retailer 24
-
$3,042 AUD
$2,137 USD
View
Most Expensive
B
Brilliant Earth
14484113A · Oct 29
$6,804 AUD
$4,780 USD
View
24 more retailers have this diamond
Prices start from $655 AUDSave up to $6,149 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
1.91ct Round
$655 AUD