CaratHunter
Plans
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 $1,440 NZD
$810 USD
As of November 3, 2026
Save $3,412 NZD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,852 NZD 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 $1,440 to $4,852, a $3,412 spread on the same certified stone. Brilliant Earth lists it at $4,852. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $4,852 NZD|Low: $878 NZD|High: $5,101 NZD|Avg: $2,240 NZD|-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 3, 2026
Retailer 4$878 NZD
Retailer 3$1,237 NZD
Retailer 9$1,440 NZD
Retailer 5$1,485 NZD
Retailer 12$1,607 NZD
Retailer 2$1,700 NZD
Retailer 10$1,722 NZD
Retailer 11$2,286 NZD
Retailer 7$2,765 NZD
Retailer 8$3,368 NZD
Retailer 6$3,779 NZD
Brilliant Earth$4,852 NZD

36 data points across 12 retailers

14 retailers$1,440 NZD to $4,852 NZD

Retailer 1
-
$707 NZD
$398 USD
Price last confirmed 40 days ago
Retailer 2
-
$793 NZD
$446 USD
View
Price last confirmed 40 days ago
Retailer 3
-
$866 NZD
$487 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$1,440 NZD
$810 USD
View
A
Retailer 5
-
$1,485 NZD
€796 EUR
View
B+
Retailer 6
-
$1,607 NZD
$904 USD
View
A
Retailer 7
-
$1,700 NZD
£753 GBP
View
A
Retailer 8
-
$1,722 NZD
$969 USD
View
B+
Retailer 9
-
$2,286 NZD
$1,286 USD
View
B
Retailer 10
-
$2,765 NZD
$1,556 USD
View
Retailer 11
-
$2,821 NZD
$1,587 USD
View
Price last confirmed 37 days ago
B
Retailer 12
-
$3,368 NZD
$1,895 USD
View
B
Retailer 13
-
$3,779 NZD
£1,674 GBP
View
Most Expensive
B
Brilliant Earth
8367372A · Nov 2
$4,852 NZD
$2,730 USD
View
13 more retailers have this diamond
Prices start from $1,440 NZDSave up to $3,412 NZD

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
$1,440 NZD