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1.51ct E SI2 Round Lab Grown Diamond

EX • E/SI2 • IGI LG846656607

Shape and cutting style on the report: Round brilliant

Certificate IGI LG846656607

Diamond specifications and retailer prices

From $456 NZD
HK$2,000 HKD
As of October 28, 2026
Save $1,752 NZD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,208 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG846656607 or 846656607. Listed at 10 retailers as of October 28, 2026, with prices from $456 to $2,208, a $1,752 spread on the same certified stone. Brilliant Earth lists it at $2,208. 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

1.51
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.3°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846656607
Dimensions7.39 × 7.45 × 4.48 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.45 mm1.51 ctE / SI2
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG846656607
Side View
Table 61.0%Crown 33.3°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 60.4%

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 28
Current: $677 NZD|Low: $374 NZD|High: $1,940 NZD|Avg: $963 NZD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$374 NZD
Retailer 3$456 NZD
Retailer 6$646 NZD
Retailer 1$677 NZD
Retailer 7$712 NZD
Retailer 8$726 NZD
Retailer 2$1,229 NZD
Retailer 4$1,335 NZD
Retailer 5$1,335 NZD
Retailer 10$1,940 NZD

4 data points across 10 retailers

10 retailers$456 NZD to $2,208 NZD

A
Cheapest Retailer
-
$456 NZD
HK$2,000 HKD
A
Retailer 2
-
$646 NZD
£286 GBP
View
A
Retailer 3
-
$677 NZD
€362 EUR
View
B+
Retailer 4
-
$712 NZD
£315 GBP
View
B+
Retailer 5
-
$726 NZD
$408 USD
View
B
Retailer 6
-
$1,229 NZD
$690 USD
View
B
Retailer 7
-
$1,335 NZD
SGD 1,013 SGD
View
B
Retailer 8
-
$1,335 NZD
$750 USD
View
B
Retailer 9
-
$1,940 NZD
£858 GBP
View
Most Expensive
B
Brilliant Earth
22260958A · Oct 29
$2,208 NZD
$1,240 USD
View
9 more retailers have this diamond
Prices start from $456 NZDSave up to $1,752 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
1.51ct Round
$456 NZD