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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG616408199

Shape and cutting style on the report: Round brilliant

Certificate IGI LG616408199

Diamond specifications and retailer prices

From $805 NZD
$453 USD
As of October 27, 2026
Save $5,575 NZD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,757 NZD at Jared · As of October 28, 2026
View at Jared

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 LG616408199 or 616408199. Listed at 11 retailers as of October 27, 2026, with a 692% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG616408199
Dimensions9.75 × 9.78 × 5.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.75 mm9.78 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG616408199
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

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 27
Current: $3,634 NZD|Low: $595 NZD|High: $6,612 NZD|Avg: $2,658 NZD|-3.0%
Retailer 1
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
October 29, 2026
Retailer 15$720 NZD
Retailer 10$805 NZD
Retailer 2$834 NZD
Retailer 8$1,377 NZD
Retailer 9$1,413 NZD
Retailer 13$1,413 NZD
Retailer 6$1,583 NZD
Retailer 4$1,763 NZD
Retailer 5$1,857 NZD
Retailer 11$2,501 NZD
Retailer 12$3,164 NZD
Retailer 1$3,634 NZD
Retailer 7$4,064 NZD
Retailer 3$5,901 NZD
Retailer 14$6,381 NZD

24 data points across 15 retailers

11 retailers$805 NZD to $6,381 NZD

Retailer 1
-
$720 NZD
$405 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$805 NZD
$453 USD
View
A
Retailer 3
-
$1,377 NZD
£610 GBP
View
A
Retailer 4
-
$1,413 NZD
$795 USD
View
B+
Retailer 5
-
$1,413 NZD
$795 USD
View
Retailer 6
-
$2,501 NZD
$1,407 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,164 NZD
$1,780 USD
View
B
Retailer 8
-
$3,634 NZD
£1,610 GBP
View
B
Retailer 9
-
$5,901 NZD
$3,320 USD
View
B
Retailer 10
-
$6,381 NZD
$3,590 USD
View
Most Expensive
Jared
149932601 · Oct 28
$9,757 NZD
$5,490 USD
View
Price under review
10 more retailers have this diamond
Prices start from $805 NZDSave up to $5,575 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
$805 NZD