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Round|Lab Grown|IGI

3.70ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG790606731

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790606731

Diamond specifications and retailer prices

From $2,218 AUD
$1,558 USD
As of October 29, 2026
Save $16,033 AUD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,251 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.7ct lab-grown round diamond

This 3.7ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790606731 or 790606731. Listed at 14 retailers as of October 29, 2026, with prices from $2,218 to $18,251, a $16,033 spread on the same certified stone. Brilliant Earth lists it at $18,251. 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

3.70
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790606731
Dimensions9.96 × 9.92 × 6.10 mm
L/W Ratio1.00
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
9.96 mm9.92 mm3.70 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790606731
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.3%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $18,251 AUD|Low: $1,584 AUD|High: $26,109 AUD|Avg: $8,021 AUD|-30.1%
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 31, 2026
Retailer 5$2,218 AUD
Retailer 11$2,269 AUD
Retailer 18$2,469 AUD
Retailer 13$2,977 AUD
Retailer 2$4,654 AUD
Retailer 4$4,716 AUD
Retailer 16$4,719 AUD
Retailer 17$5,445 AUD
Retailer 3$6,348 AUD
Retailer 6$6,683 AUD
Retailer 8$7,310 AUD
Retailer 10$7,578 AUD
Retailer 12$8,340 AUD
Retailer 15$8,705 AUD
Retailer 7$12,244 AUD
Retailer 9$14,066 AUD
Retailer 14$15,603 AUD
Brilliant Earth$18,251 AUD

30 data points across 18 retailers

14 retailers$2,218 AUD to $18,251 AUD

A
Cheapest Retailer
-
$2,218 AUD
$1,558 USD
Final sale: no returns
A
Retailer 2
-
$2,269 AUD
$1,594 USD
View
A
Retailer 3
-
$2,469 AUD
$1,734 USD
View
A
Retailer 4
-
$2,977 AUD
$2,091 USD
View
A
Retailer 5
-
$4,654 AUD
$3,269 USD
View
A
Retailer 6
-
$4,716 AUD
$3,313 USD
View
A
Retailer 7
-
$4,719 AUD
$3,315 USD
View
B+
Retailer 8
-
$5,445 AUD
$3,825 USD
View
B+
Retailer 9
-
$6,348 AUD
$4,459 USD
View
B+
Retailer 10
-
$8,340 AUD
£4,613 GBP
View
B+
Retailer 11
-
$8,705 AUD
$6,115 USD
View
Retailer 12
-
$9,503 AUD
$6,675 USD
View
Price last confirmed 23 days ago
B
Retailer 13
-
$15,603 AUD
$10,960 USD
View
Most Expensive
B
Brilliant Earth
21413588Y · Oct 30
$18,251 AUD
$12,820 USD
View
13 more retailers have this diamond
Prices start from $2,218 AUDSave up to $16,033 AUD

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
3.70ct Round
$2,218 AUD