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Round|Lab Grown|IGI

1.91ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG817693378

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817693378

Diamond specifications and retailer prices

From $1,476 AUD
$1,037 USD
As of October 29, 2026
Save $6,966 AUD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,442 AUD at Brilliant Earth · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693378 or 817693378. Listed at 21 retailers as of October 29, 2026, with prices from $1,476 to $8,442, a $6,966 spread on the same certified stone. Brilliant Earth lists it at $8,442. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693378
Dimensions8.05 × 8.11 × 4.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
8.05 mm8.11 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693378
Side View
Table 57.0%Crown 33°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.3%

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: $8,442 AUD|Low: $1,416 AUD|High: $9,154 AUD|Avg: $3,523 AUD|-7.6%
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
October 30, 2026
Retailer 14$1,476 AUD
Retailer 5$1,606 AUD
Retailer 7$1,653 AUD
Retailer 15$1,713 AUD
Retailer 13$1,957 AUD
Retailer 2$2,470 AUD
Retailer 3$2,732 AUD
Retailer 9$2,735 AUD
Retailer 8$3,148 AUD
Retailer 6$3,210 AUD
Retailer 12$4,997 AUD
Retailer 11$5,058 AUD
Retailer 4$5,746 AUD
Retailer 10$5,816 AUD
Brilliant Earth$8,442 AUD

39 data points across 15 retailers

21 retailers$1,476 AUD to $8,442 AUD

A
Cheapest Retailer
-
$1,476 AUD
$1,037 USD
A
Retailer 2
-
$1,606 AUD
$1,128 USD
View
A
Retailer 3
-
$1,653 AUD
$1,161 USD
View
Final sale: no returns
Retailer 4
-
$1,713 AUD
$1,203 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$1,713 AUD
$1,203 USD
View
B+
Retailer 6
-
$1,957 AUD
$1,375 USD
View
B+
Retailer 7
-
$1,986 AUD
HK$10,900 HKD
View
B+
Retailer 8
-
$2,430 AUD
$1,707 USD
View
B+
Retailer 9
-
$2,470 AUD
£1,366 GBP
View
B+
Retailer 10
-
$2,732 AUD
$1,919 USD
View
B+
Retailer 11
-
$2,735 AUD
€1,830 EUR
View
B+
Retailer 12
-
$3,148 AUD
ZAR 35,722 ZAR
View
B+
Retailer 13
-
$3,210 AUD
$2,255 USD
View
B
Retailer 14
-
$3,579 AUD
$2,514 USD
View
B
Retailer 15
-
$4,997 AUD
$3,510 USD
View
B
Retailer 16
-
$5,058 AUD
$3,553 USD
View
B
Retailer 17
-
$5,502 AUD
$3,865 USD
View
B
Retailer 18
-
$5,746 AUD
SGD 5,454 SGD
View
B
Retailer 19
-
$5,816 AUD
£3,217 GBP
View
B
Retailer 20
-
$5,976 AUD
$4,198 USD
View
Most Expensive
B
Brilliant Earth
20860275A · Oct 30
$8,442 AUD
$5,930 USD
View
20 more retailers have this diamond
Prices start from $1,476 AUDSave up to $6,966 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
$1,476 AUD