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1.73ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG840633193

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840633193

Diamond specifications and retailer prices

From $451 USD
As of October 26, 2026
Save $3,369 USD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,820 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.73ct lab-grown round diamond

This 1.73ct 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 LG840633193 or 840633193. Listed at 22 retailers as of October 26, 2026, with prices from $451 to $3,820, a $3,369 spread on the same certified stone. Brilliant Earth lists it at $3,820. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633193
Dimensions7.65 × 7.68 × 4.75 mm
L/W Ratio1.00
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
7.65 mm7.68 mm1.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633193
Side View
Table 57.0%Crown 35.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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A+
Exceptional
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 26
Current: $3,820 USD|Low: $451 USD|High: $4,410 USD|Avg: $1,364 USD|-13.4%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 6$451 USD
Retailer 20$505 USD
Retailer 7$521 USD
Retailer 11$559 USD
Retailer 15$605 USD
Retailer 16$718 USD
Retailer 9$805 USD
Retailer 3$877 USD
Retailer 13$880 USD
Retailer 17$917 USD
Retailer 2$927 USD
Retailer 21$953 USD
Retailer 5$1,268 USD
Retailer 4$1,504 USD
Retailer 12$1,798 USD
Retailer 10$1,830 USD
Retailer 8$1,925 USD
Retailer 19$1,949 USD
Retailer 22$1,990 USD
Retailer 18$2,057 USD
Retailer 14$2,975 USD
Brilliant Earth$3,820 USD

23 data points across 22 retailers

22 retailers$451 USD to $3,820 USD

A+
Cheapest Retailer
-
$451 USD
A
Retailer 2
-
$505 USD
View
A
Retailer 3
-
$559 USD
View
Retailer 4
-
$605 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$718 USD
£565 GBP
View
A
Retailer 6
-
$805 USD
View
A
Retailer 7
-
$877 USD
View
A
Retailer 8
-
$880 USD
View
A
Retailer 9
-
$917 USD
£722 GBP
View
A
Retailer 10
-
$927 USD
€883 EUR
View
Retailer 11
-
$953 USD
ZAR 15,391 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,268 USD
View
B+
Retailer 13
-
$1,504 USD
View
Retailer 14
-
$1,798 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
$1,830 USD
View
B+
Retailer 16
-
$1,925 USD
SGD 2,601 SGD
View
B+
Retailer 17
-
$1,949 USD
View
B+
Retailer 18
-
$1,990 USD
View
B+
Retailer 19
-
$2,057 USD
£1,620 GBP
View
Retailer 20
-
$2,975 USD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$3,094 USD
View
Most Expensive
B
Brilliant Earth
21729231A · Oct 28
$3,820 USD
View
21 more retailers have this diamond
Prices start from $451 USDSave up to $3,369 USD

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+
1.73ct Round
$451 USD