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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG743550584

Shape and cutting style on the report: Round brilliant

Certificate IGI LG743550584

Diamond specifications and retailer prices

From $338 USD
As of October 29, 2026
Save $2,682 USD (89%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $3,020 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743550584 or 743550584. Listed at 27 retailers as of October 29, 2026, with prices from $338 to $3,020, a $2,682 spread on the same certified stone. Brilliant Earth lists it at $3,020. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743550584
Dimensions7.38 × 7.33 × 4.54 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
7.38 mm7.33 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743550584
Side View
Table 57.0%Crown 35.7°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.8%

Caratlytics Score

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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: $3,020 USD|Low: $338 USD|High: $3,420 USD|Avg: $1,219 USD|-11.7%
Brilliant Earth
Retailer 2
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Retailer 25
October 29, 2026
Retailer 3$338 USD
Retailer 25$392 USD
Retailer 24$411 USD
Retailer 7$419 USD
Retailer 6$595 USD
Retailer 22$602 USD
Retailer 9$630 USD
Retailer 11$655 USD
Retailer 23$675 USD
Retailer 20$750 USD
Retailer 14$754 USD
Retailer 21$795 USD
Retailer 2$831 USD
Retailer 17$850 USD
Retailer 18$1,063 USD
Retailer 13$1,073 USD
Retailer 8$1,229 USD
Retailer 5$1,487 USD
Retailer 15$1,583 USD
Retailer 12$1,628 USD
Retailer 10$1,759 USD
Retailer 19$1,817 USD
Retailer 4$2,255 USD
Retailer 16$3,000 USD
Brilliant Earth$3,020 USD

28 data points across 25 retailers

27 retailers$338 USD to $3,020 USD

A
Cheapest Retailer
-
$338 USD
A
Retailer 2
-
$392 USD
View
A
Retailer 3
-
$411 USD
View
Final sale: no returns
A
Retailer 4
-
$419 USD
View
A
Retailer 5
-
$595 USD
£469 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$602 USD
HK$4,700 HKD
View
A
Retailer 7
-
$630 USD
View
A
Retailer 8
-
$655 USD
View
A
Retailer 9
-
$675 USD
View
A
Retailer 10
-
$750 USD
€714 EUR
View
A
Retailer 11
-
$754 USD
View
A
Retailer 12
-
$795 USD
ZAR 12,840 ZAR
View
A
Retailer 13
-
$831 USD
£654 GBP
View
A
Retailer 14
-
$850 USD
A$1,308 AUD
View
B+
Retailer 15
-
$1,063 USD
View
B+
Retailer 16
-
$1,073 USD
A$1,651 AUD
View
B+
Retailer 17
-
$1,229 USD
View
B+
Retailer 18
-
$1,487 USD
View
B+
Retailer 19
-
$1,583 USD
View
B+
Retailer 20
-
$1,628 USD
View
B+
Retailer 21
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$1,643 USD
View
B+
Retailer 22
-
$1,756 USD
SGD 2,373 SGD
View
B+
Retailer 23
-
$1,759 USD
A$2,706 AUD
View
Price last confirmed 21 days ago
B+
Retailer 24
-
$1,817 USD
£1,431 GBP
View
B+
Retailer 25
-
$2,255 USD
View
B
Retailer 26
-
$3,000 USD
View
Most Expensive
B
Brilliant Earth
17200074Y · Oct 29
$3,020 USD
View
26 more retailers have this diamond
Prices start from $338 USDSave up to $2,682 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
1.51ct Round
$338 USD