Round|Lab Grown|IGI

1.51ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG823679340

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823679340

Diamond specifications and retailer prices

From $384 USD
HK$3,000 HKD
As of October 31, 2026
Save $1,636 USD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,020 USD at Brilliant Earth · As of October 30, 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 G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823679340 or 823679340. Listed at 24 retailers as of October 30, 2026, with prices from $384 to $2,020, a $1,636 spread on the same certified stone. Brilliant Earth lists it at $2,020. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823679340
Dimensions7.32 × 7.34 × 4.50 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.32 mm7.34 mm1.51 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823679340
Side View
Table 60.0%Crown 33.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.4%

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 31
Current: $2,020 USD|Low: $450 USD|High: $2,370 USD|Avg: $1,040 USD|-12.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 2$450 USD
Retailer 14$450 USD
Retailer 10$539 USD
Retailer 12$549 USD
Retailer 9$608 USD
Retailer 13$744 USD
Retailer 8$800 USD
Retailer 15$843 USD
Retailer 5$1,078 USD
Retailer 3$1,093 USD
Retailer 7$1,223 USD
Retailer 11$1,287 USD
Retailer 4$1,414 USD
Retailer 6$1,870 USD
Brilliant Earth$2,020 USD

34 data points across 15 retailers

24 retailers$384 USD to $2,020 USD

Retailer 1
-
$260 USD
Price last confirmed 13 days ago
Retailer 2
-
$309 USD
View
Price last confirmed 18 days ago
Retailer 3
-
$330 USD
View
Price last confirmed 29 days ago
Retailer 4
-
$330 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$384 USD
HK$3,000 HKD
View
B+
Retailer 6
-
$450 USD
View
A
Retailer 7
-
$450 USD
View
A
Retailer 8
-
$539 USD
€513 EUR
View
A
Retailer 9
-
$549 USD
ZAR 8,865 ZAR
View
A
Retailer 10
-
$608 USD
£479 GBP
View
A
Retailer 11
-
$744 USD
A$1,145 AUD
View
A
Retailer 12
-
$800 USD
View
B+
Retailer 13
-
$843 USD
View
Retailer 14
-
$1,038 USD
View
Price last confirmed 13 days ago
B+
Retailer 15
-
$1,078 USD
View
B+
Retailer 16
-
$1,093 USD
SGD 1,477 SGD
View
B+
Retailer 17
-
$1,223 USD
View
B+
Retailer 18
-
$1,287 USD
£1,013 GBP
View
B
Retailer 19
-
$1,414 USD
View
Retailer 20
-
$1,865 USD
View
Price last confirmed 10 days ago
Retailer 21
-
$1,870 USD
View
Price last confirmed 10 days ago
Retailer 22
-
$1,875 USD
View
Price last confirmed 10 days ago
Retailer 23
-
$1,889 USD
View
Price last confirmed 52 days ago
Most Expensive
B
Brilliant Earth
21101265A · Oct 30
$2,020 USD
View
23 more retailers have this diamond
Prices start from $384 USDSave up to $1,636 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
$384 USD