Round|Lab Grown|IGI

4.54ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG821640743

Certificate IGI LG821640743

Diamond specifications and retailer prices

From $3,802 USD
Save $24,028 USD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $27,830 USD at Brilliant Earth
View at Brilliant Earth

About this 4.54ct lab-grown round diamond

This 4.54ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821640743 or 821640743. Listed at 12 retailers, with prices from $3,802 to $27,830 at Brilliant Earth, a $24,028 spread on the same certified stone. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.54
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821640743
Dimensions10.51 × 10.58 × 6.57 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
10.51 mm10.58 mm4.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821640743
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $27,830 USD|Low: $3,653 USD|High: $27,880 USD|Avg: $10,604 USD|-0.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 1, 2026
Retailer 8$3,802 USD
Retailer 3$4,680 USD
Retailer 12$4,749 USD
Retailer 6$5,127 USD
Retailer 9$5,887 USD
Retailer 2$6,107 USD
Retailer 7$9,902 USD
Retailer 10$10,188 USD
Retailer 5$12,484 USD
Retailer 4$13,534 USD
Retailer 11$19,660 USD
Brilliant Earth$27,830 USD

26 data points across 12 retailers

12 retailers$3,802 USD to $27,830 USD

A
Cheapest Retailer
-
$3,802 USD
A
Retailer 2
-
$4,680 USD
View
A
Retailer 3
-
$4,749 USD
HK$37,100 HKD
View
A
Retailer 4
-
$5,139 USD
£4,046 GBP
View
A
Retailer 5
-
$5,887 USD
View
A
Retailer 6
-
$6,107 USD
€5,816 EUR
View
B+
Retailer 7
-
$9,902 USD
£7,797 GBP
View
B+
Retailer 8
-
$10,188 USD
View
B+
Retailer 9
-
$12,484 USD
A$19,206 AUD
View
B+
Retailer 10
-
$13,534 USD
View
B
Retailer 11
-
$20,061 USD
View
Most Expensive
B
Brilliant Earth
21143714A · Oct 1
$27,830 USD
View
11 more retailers have this diamond
Prices start from $3,802 USDSave up to $24,028 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.

A
4.54ct Round
$3,802 USD