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Round|Lab Grown|IGI

1.99ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG780685558

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780685558

Diamond specifications and retailer prices

From $1,979 AUD
$1,390 USD
As of October 28, 2026
Save $7,572 AUD (79%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,551 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.99ct lab-grown round diamond

This 1.99ct 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 LG780685558 or 780685558. Listed at 23 retailers as of October 28, 2026, with prices from $1,979 to $9,551, a $7,572 spread on the same certified stone. Brilliant Earth lists it at $9,551. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.99
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780685558
Dimensions8.11 × 8.05 × 4.94 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
8.11 mm8.05 mm1.99 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780685558
Side View
Table 57.0%Crown 33.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

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 28
Current: $9,551 AUD|Low: $1,979 AUD|High: $9,551 AUD|Avg: $4,412 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
October 30, 2026
Retailer 5$1,979 AUD
Retailer 3$2,339 AUD
Retailer 9$2,690 AUD
Retailer 10$2,746 AUD
Retailer 2$2,876 AUD
Retailer 11$2,929 AUD
Retailer 4$3,574 AUD
Retailer 6$3,768 AUD
Retailer 12$5,620 AUD
Retailer 7$6,622 AUD
Retailer 13$6,855 AUD
Retailer 8$8,286 AUD
Brilliant Earth$9,551 AUD

44 data points across 13 retailers

23 retailers$1,979 AUD to $9,551 AUD

Retailer 1
-
$1,766 AUD
$1,241 USD
Price last confirmed 20 days ago
Retailer 2
-
$1,923 AUD
$1,351 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$1,979 AUD
$1,390 USD
View
Final sale: no returns
Retailer 4
-
$2,050 AUD
$1,440 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$2,050 AUD
$1,440 USD
View
Price last confirmed 28 days ago
B+
Retailer 6
-
$2,339 AUD
$1,643 USD
View
B+
Retailer 7
-
$2,687 AUD
$1,888 USD
View
B+
Retailer 8
-
$2,690 AUD
$1,890 USD
View
B+
Retailer 9
-
$2,746 AUD
View
B+
Retailer 10
-
$2,876 AUD
£1,591 GBP
View
B+
Retailer 11
-
$2,929 AUD
$2,058 USD
View
B+
Retailer 12
-
$3,574 AUD
$2,511 USD
View
B+
Retailer 13
-
$3,768 AUD
ZAR 42,766 ZAR
View
Retailer 14
-
$3,842 AUD
$2,699 USD
View
Price last confirmed 22 days ago
Retailer 15
-
$3,927 AUD
$2,759 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
$5,620 AUD
$3,948 USD
View
B
Retailer 17
-
$5,881 AUD
$4,132 USD
View
B
Retailer 18
-
$6,429 AUD
$4,517 USD
View
B
Retailer 19
-
$6,622 AUD
£3,663 GBP
View
B
Retailer 20
-
$6,855 AUD
SGD 6,508 SGD
View
B
Retailer 21
-
$7,189 AUD
$5,051 USD
View
B
Retailer 22
-
$8,286 AUD
€5,544 EUR
View
Most Expensive
B
Brilliant Earth
19705441A · Oct 29
$9,551 AUD
$6,710 USD
View
22 more retailers have this diamond
Prices start from $1,979 AUDSave up to $7,572 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
1.99ct Round
$1,979 AUD