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Round|Lab Grown|IGI

3.51ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG591331400

Certificate IGI LG591331400

Diamond specifications and retailer prices

From $1,586 USD
Save $10,494 USD (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $12,080 USD at Brilliant Earth
View at Brilliant Earth

About this 3.51ct lab-grown round diamond

This 3.51ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG591331400 or 591331400. Listed at 18 retailers, with prices from $1,586 to $12,080 at Brilliant Earth, a $10,494 spread on the same certified stone. 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

3.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591331400
Dimensions9.67 × 9.74 × 6.01 mm
L/W Ratio1.01
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
9.67 mm9.74 mm3.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591331400
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $12,080 USD|Low: $1,132 USD|High: $12,370 USD|Avg: $4,668 USD|-2.3%
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
Retailer 16
Retailer 17
Retailer 18
October 1, 2026
Retailer 3$1,586 USD
Retailer 18$1,956 USD
Retailer 6$2,349 USD
Retailer 16$2,350 USD
Retailer 11$2,575 USD
Retailer 2$2,595 USD
Retailer 10$2,984 USD
Retailer 14$4,102 USD
Retailer 13$4,137 USD
Retailer 5$4,788 USD
Retailer 7$5,022 USD
Retailer 4$5,143 USD
Retailer 15$5,231 USD
Retailer 12$5,245 USD
Retailer 8$6,403 USD
Retailer 17$8,716 USD
Retailer 9$9,750 USD
Brilliant Earth$12,080 USD

38 data points across 18 retailers

18 retailers$1,586 USD to $12,080 USD

A
Cheapest Retailer
-
$1,586 USD
A
Retailer 2
-
$1,956 USD
View
A
Retailer 3
-
$2,349 USD
View
A
Retailer 4
-
$2,350 USD
View
A
Retailer 5
-
$2,578 USD
£2,030 GBP
View
A
Retailer 6
-
$2,595 USD
View
A
Retailer 7
-
$2,984 USD
View
B+
Retailer 8
-
$4,102 USD
A$6,311 AUD
View
B+
Retailer 9
-
$4,137 USD
ZAR 66,834 ZAR
View
B+
Retailer 10
-
$4,788 USD
View
B+
Retailer 11
-
$5,022 USD
View
B+
Retailer 12
-
$5,143 USD
View
B+
Retailer 13
-
$5,231 USD
View
B+
Retailer 14
-
$5,245 USD
£4,130 GBP
View
B+
Retailer 15
-
$6,403 USD
View
B
Retailer 16
-
$8,716 USD
View
B
Retailer 17
-
$9,750 USD
View
Most Expensive
B
Brilliant Earth
18396570Y · Oct 1
$12,080 USD
View
17 more retailers have this diamond
Prices start from $1,586 USDSave up to $10,494 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.

A
3.51ct Round
$1,586 USD