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Oval|Lab Grown|IGI

1.78ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG845698384

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG845698384

Diamond specifications and retailer prices

From $370 NZD
$208 USD
As of October 29, 2026
Save $1,479 NZD (80%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,850 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.78ct lab-grown oval diamond

This 1.78ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG845698384 or 845698384. Listed at 6 retailers as of October 29, 2026, with prices from $370 to $1,850, a $1,479 spread on the same certified stone. MOH London lists it at $1,850. 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

1.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845698384
Dimensions9.64 × 6.94 × 4.32 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.64 mm6.94 mm1.78 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845698384
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

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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: Oct 29
Current: $1,850 NZD|Low: $370 NZD|High: $1,850 NZD|Avg: $1,056 NZD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 3$370 NZD
Retailer 5$429 NZD
Retailer 2$590 NZD
Retailer 6$1,067 NZD
Retailer 4$1,476 NZD
MOH London$1,850 NZD

6 data points across 6 retailers

6 retailers$370 NZD to $1,850 NZD

A
Cheapest Retailer
-
$370 NZD
$208 USD
A
Retailer 2
-
$429 NZD
$241 USD
View
A
Retailer 3
-
$590 NZD
£261 GBP
View
B+
Retailer 4
-
$1,067 NZD
$599 USD
View
B+
Retailer 5
-
$1,476 NZD
$829 USD
View
Most Expensive
B
MOH London
LG845698384 · Oct 29
$1,850 NZD
£818 GBP
View
5 more retailers have this diamond
Prices start from $370 NZDSave up to $1,479 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
1.78ct Oval
$370 NZD