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Oval|Lab Grown|IGI

1.77ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG690502894

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG690502894

Diamond specifications and retailer prices

From $450 NZD
$253 USD
As of October 27, 2026
Save $1,100 NZD (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,551 NZD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.77ct lab-grown oval diamond

This 1.77ct 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 LG690502894 or 690502894. Listed at 9 retailers as of October 27, 2026, with prices from $450 to $1,551, a $1,100 spread on the same certified stone. NZ Jewellers lists it at $1,551. 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

1.77
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG690502894
Dimensions9.91 × 6.77 × 4.28 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.91 mm6.77 mm1.77 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG690502894
Side View
Table 56.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.2%

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: Oct 27
Current: $1,551 NZD|Low: $450 NZD|High: $3,401 NZD|Avg: $1,332 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 13$450 NZD
Retailer 7$483 NZD
Retailer 11$547 NZD
Retailer 6$621 NZD
Retailer 12$826 NZD
Retailer 2$896 NZD
Retailer 8$953 NZD
Retailer 3$963 NZD
Retailer 9$1,068 NZD
NZ Jewellers$1,551 NZD
Retailer 10$1,923 NZD
Retailer 4$2,185 NZD
Retailer 5$3,401 NZD

3 data points across 13 retailers

9 retailers$450 NZD to $1,551 NZD

A
Cheapest Retailer
-
$450 NZD
$253 USD
A
Retailer 2
-
$483 NZD
$271 USD
View
A
Retailer 3
-
$547 NZD
HK$2,400 HKD
View
A
Retailer 4
-
$621 NZD
£275 GBP
View
B+
Retailer 5
-
$826 NZD
$464 USD
View
A
Retailer 6
-
$896 NZD
£396 GBP
View
A
Retailer 7
-
$953 NZD
$535 USD
View
B+
Retailer 8
-
$1,068 NZD
$600 USD
View
Most Expensive
B
NZ Jewellers
50bc0bdf-1e6f-4035-928e-b11690bafe16 · Oct 28
$1,551 NZD
$871 USD
View
8 more retailers have this diamond
Prices start from $450 NZDSave up to $1,100 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
1.77ct Oval
$450 NZD