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Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG787656878

Shape and cutting style on the report: Round brilliant

Certificate IGI LG787656878

Diamond specifications and retailer prices

From $735 USD
As of November 3, 2026
Save $2,995 USD (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,730 USD at Brilliant Earth · As of November 2, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG787656878 or 787656878. Listed at 24 retailers as of November 2, 2026, with prices from $735 to $3,730, a $2,995 spread on the same certified stone. Brilliant Earth lists it at $3,730. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787656878
Dimensions7.33 × 7.38 × 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
7.33 mm7.38 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787656878
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
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: Nov 3
Current: $3,730 USD|Low: $631 USD|High: $4,860 USD|Avg: $1,774 USD|-23.3%
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
Retailer 14
Retailer 15
November 3, 2026
Retailer 14$657 USD
Retailer 7$715 USD
Retailer 4$762 USD
Retailer 6$1,005 USD
Retailer 12$1,080 USD
Retailer 15$1,090 USD
Retailer 13$1,175 USD
Retailer 2$1,215 USD
Retailer 8$1,400 USD
Retailer 9$1,788 USD
Retailer 3$2,455 USD
Retailer 5$2,565 USD
Retailer 11$3,211 USD
Retailer 10$3,604 USD
Brilliant Earth$3,730 USD

43 data points across 15 retailers

24 retailers$735 USD to $3,730 USD

Retailer 1
-
$657 USD
Price last confirmed 23 days ago
Retailer 2
-
$715 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$735 USD
View
Final sale: no returns
Retailer 4
-
$762 USD
View
Price last confirmed 21 days ago
Retailer 5
-
$762 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
$1,005 USD
View
B+
Retailer 7
-
$1,076 USD
View
B+
Retailer 8
-
$1,080 USD
View
B+
Retailer 9
-
$1,090 USD
View
B+
Retailer 10
-
$1,175 USD
A$1,808 AUD
View
B+
Retailer 11
-
$1,215 USD
£956 GBP
View
B+
Retailer 12
-
$1,400 USD
ZAR 22,623 ZAR
View
B
Retailer 13
-
$1,788 USD
View
Retailer 14
-
$1,877 USD
View
Price last confirmed 42 days ago
Retailer 15
-
$2,143 USD
View
Price last confirmed 26 days ago
B
Retailer 16
-
$2,455 USD
View
B
Retailer 17
-
$2,565 USD
SGD 3,466 SGD
View
B
Retailer 18
-
$2,600 USD
View
B
Retailer 19
-
$2,615 USD
View
B
Retailer 20
-
$2,630 USD
View
B
Retailer 21
-
$2,652 USD
View
B
Retailer 22
-
$3,211 USD
£2,528 GBP
View
B
Retailer 23
-
$3,604 USD
€3,432 EUR
View
Most Expensive
B
Brilliant Earth
19705076A · Nov 2
$3,730 USD
View
23 more retailers have this diamond
Prices start from $735 USDSave up to $2,995 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
$735 USD