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Round|Lab Grown|IGI

3.72ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG628401021

Shape and cutting style on the report: Round brilliant

Certificate IGI LG628401021

Diamond specifications and retailer prices

From $842 USD
As of October 29, 2026
Save $5,848 USD (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,690 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.72ct lab-grown round diamond

This 3.72ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628401021 or 628401021. Listed at 21 retailers as of October 29, 2026, with prices from $842 to $6,690, a $5,848 spread on the same certified stone. Brilliant Earth lists it at $6,690. 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

3.72
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628401021
Dimensions9.95 × 9.99 × 6.06 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
9.95 mm9.99 mm3.72 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628401021
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.8%

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: $6,690 USD|Low: $808 USD|High: $10,460 USD|Avg: $2,236 USD|-36.0%
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
Retailer 16
November 1, 2026
Retailer 16$842 USD
Retailer 7$916 USD
Retailer 5$943 USD
Retailer 4$977 USD
Retailer 13$1,155 USD
Retailer 6$1,372 USD
Retailer 2$1,496 USD
Retailer 10$1,553 USD
Retailer 14$1,608 USD
Retailer 9$2,206 USD
Retailer 15$2,246 USD
Retailer 11$2,268 USD
Retailer 8$2,747 USD
Retailer 3$3,124 USD
Retailer 12$3,682 USD
Brilliant Earth$6,690 USD

41 data points across 16 retailers

21 retailers$842 USD to $6,690 USD

A
Cheapest Retailer
-
$842 USD
A
Retailer 2
-
$916 USD
View
A
Retailer 3
-
$943 USD
View
Final sale: no returns
A
Retailer 4
-
$977 USD
View
Retailer 5
-
$977 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,155 USD
View
A
Retailer 7
-
$1,372 USD
View
A
Retailer 8
-
$1,496 USD
£1,178 GBP
View
A
Retailer 9
-
$1,553 USD
€1,479 EUR
View
A
Retailer 10
-
$1,608 USD
View
B+
Retailer 11
-
$2,206 USD
A$3,394 AUD
View
B+
Retailer 12
-
$2,246 USD
View
A
Retailer 13
-
$2,268 USD
ZAR 36,643 ZAR
View
B+
Retailer 14
-
$2,742 USD
View
B+
Retailer 15
-
$2,747 USD
View
B+
Retailer 16
-
$2,751 USD
View
B+
Retailer 17
-
$3,056 USD
View
B+
Retailer 18
-
$3,124 USD
View
B+
Retailer 19
-
$3,386 USD
View
B+
Retailer 20
-
$3,682 USD
£2,899 GBP
View
Most Expensive
B
Brilliant Earth
10022090A · Oct 31
$6,690 USD
View
20 more retailers have this diamond
Prices start from $842 USDSave up to $5,848 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
3.72ct Round
$842 USD