Round|Lab Grown|IGI

15.04ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG745523225

Shape and cutting style on the report: Round brilliant

Certificate IGI LG745523225

Diamond specifications and retailer prices

From $3,685 USD
£2,901 GBP
As of October 27, 2026
Save $15,315 USD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $19,000 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 15.04ct lab-grown round diamond

This 15.04ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG745523225 or 745523225. Listed at 16 retailers as of October 27, 2026, with prices from $3,685 to $19,000, a $15,315 spread on the same certified stone. Brilliant Earth lists it at $19,000. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

15.04
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745523225
Dimensions16.07 × 16.19 × 9.40 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.07 mm16.19 mm15.04 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745523225
Side View
Table 61.0%Crown 32.1°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $19,000 USD|Low: $3,672 USD|High: $19,000 USD|Avg: $7,017 USD
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 11$3,685 USD
Retailer 7$3,943 USD
Retailer 4$4,132 USD
Retailer 14$4,573 USD
Retailer 5$4,789 USD
Retailer 9$5,338 USD
Retailer 2$5,535 USD
Retailer 10$5,595 USD
Retailer 3$5,715 USD
Retailer 12$5,939 USD
Retailer 15$6,880 USD
Retailer 8$6,984 USD
Retailer 6$7,084 USD
Retailer 13$15,720 USD
Brilliant Earth$19,000 USD

30 data points across 15 retailers

16 retailers$3,685 USD to $19,000 USD

A
Cheapest Retailer
-
$3,685 USD
£2,901 GBP
A
Retailer 2
-
$3,943 USD
View
A
Retailer 3
-
$4,132 USD
View
A
Retailer 4
-
$4,573 USD
View
B+
Retailer 5
-
$4,789 USD
View
B+
Retailer 6
-
$5,338 USD
HK$41,700 HKD
View
B+
Retailer 7
-
$5,535 USD
View
B+
Retailer 8
-
$5,595 USD
View
B+
Retailer 9
-
$5,715 USD
View
B+
Retailer 10
-
$5,939 USD
£4,677 GBP
View
B+
Retailer 11
-
$6,880 USD
View
B+
Retailer 12
-
$6,984 USD
€6,651 EUR
View
B
Retailer 13
-
$7,084 USD
View
B
Retailer 14
-
$15,720 USD
View
Retailer 15
-
$19,000 USD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
17134365A · Oct 29
$19,000 USD
View
15 more retailers have this diamond
Prices start from $3,685 USDSave up to $15,315 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
15.04ct Round
$3,685 USD