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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG600342277

Shape and cutting style on the report: Round brilliant

Certificate IGI LG600342277

Diamond specifications and retailer prices

From $1,156 AUD
$810 USD
As of November 2, 2026
Save $2,740 AUD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,895 AUD at Brilliant Earth · As of November 2, 2026
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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600342277 or 600342277. Listed at 14 retailers as of November 2, 2026, with prices from $1,156 to $3,895, a $2,740 spread on the same certified stone. Brilliant Earth lists it at $3,895. 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

3.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600342277
Dimensions9.74 × 9.72 × 6.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.74 mm9.72 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600342277
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
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: Nov 2
Current: $3,895 AUD|Low: $705 AUD|High: $4,095 AUD|Avg: $1,798 AUD|-4.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$705 AUD
Retailer 3$993 AUD
Retailer 9$1,156 AUD
Retailer 2$1,193 AUD
Retailer 12$1,290 AUD
Retailer 5$1,365 AUD
Retailer 10$1,383 AUD
Retailer 11$1,835 AUD
Retailer 7$2,220 AUD
Retailer 8$2,704 AUD
Retailer 6$3,034 AUD
Brilliant Earth$3,895 AUD

35 data points across 12 retailers

14 retailers$1,156 AUD to $3,895 AUD

Retailer 1
-
$568 AUD
$398 USD
Price last confirmed 40 days ago
Retailer 2
-
$636 AUD
$446 USD
View
Price last confirmed 40 days ago
Retailer 3
-
$695 AUD
$487 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$1,156 AUD
$810 USD
View
A
Retailer 5
-
$1,193 AUD
€796 EUR
View
B+
Retailer 6
-
$1,290 AUD
$904 USD
View
A
Retailer 7
-
$1,365 AUD
£753 GBP
View
A
Retailer 8
-
$1,383 AUD
$969 USD
View
B+
Retailer 9
-
$1,835 AUD
$1,286 USD
View
B
Retailer 10
-
$2,220 AUD
$1,556 USD
View
Retailer 11
-
$2,264 AUD
$1,587 USD
View
Price last confirmed 37 days ago
B
Retailer 12
-
$2,704 AUD
$1,895 USD
View
B
Retailer 13
-
$3,034 AUD
£1,674 GBP
View
Most Expensive
B
Brilliant Earth
8367372A · Nov 2
$3,895 AUD
$2,730 USD
View
13 more retailers have this diamond
Prices start from $1,156 AUDSave up to $2,740 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
3.51ct Round
$1,156 AUD