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Round|Lab Grown|IGI

4.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754594164

Certificate IGI LG754594164

Diamond specifications and retailer prices

From $3,114 USD
Save $24,526 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $27,640 USD at Brilliant Earth
View at Brilliant Earth

About this 4.51ct lab-grown round diamond

This 4.51ct 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 LG754594164 or 754594164. Listed at 14 retailers, with prices from $3,114 to $27,640 at Brilliant Earth, a $24,526 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

4.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594164
Dimensions10.70 × 10.74 × 6.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
10.70 mm10.74 mm4.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594164
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.2%

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: Oct 1
Current: $27,640 USD|Low: $2,224 USD|High: $27,640 USD|Avg: $9,886 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 19
October 1, 2026
Retailer 3$3,114 USD
Retailer 17$3,197 USD
Retailer 16$3,640 USD
Retailer 18$4,272 USD
Retailer 19$4,394 USD
Retailer 5$4,836 USD
Retailer 2$5,566 USD
Retailer 4$5,985 USD
Retailer 7$6,969 USD
Retailer 15$7,333 USD
Retailer 13$7,642 USD
Retailer 10$7,957 USD
Retailer 14$9,133 USD
Retailer 12$12,155 USD
Retailer 9$14,560 USD
Retailer 8$15,355 USD
Retailer 6$19,130 USD
Retailer 11$21,772 USD
Brilliant Earth$27,640 USD

15 data points across 19 retailers

14 retailers$3,114 USD to $27,640 USD

A
Cheapest Retailer
-
$3,114 USD
A
Retailer 2
-
$3,197 USD
View
A
Retailer 3
-
$3,640 USD
View
A
Retailer 4
-
$4,272 USD
View
A
Retailer 5
-
$4,394 USD
View
A
Retailer 6
-
$4,836 USD
View
A
Retailer 7
-
$5,566 USD
€5,301 EUR
View
A
Retailer 8
-
$5,985 USD
A$9,208 AUD
View
B+
Retailer 9
-
$7,333 USD
View
B+
Retailer 10
-
$7,642 USD
A$11,757 AUD
View
B+
Retailer 11
-
$9,133 USD
£7,191 GBP
View
B
Retailer 12
-
$12,155 USD
A$18,700 AUD
View
B
Retailer 13
-
$19,130 USD
View
Most Expensive
B
Brilliant Earth
17680440Y · Oct 1
$27,640 USD
View
13 more retailers have this diamond
Prices start from $3,114 USDSave up to $24,526 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
4.51ct Round
$3,114 USD