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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 £164 GBP
$219 USD
As of October 29, 2026
Save £490 GBP (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £654 GBP 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 10 retailers as of October 28, 2026, with prices from £164 to £654, a £490 spread on the same certified stone. NZ Jewellers lists it at £654. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £654 GBP|Low: £164 GBP|High: £1,434 GBP|Avg: £550 GBP
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
Retailer 14
October 29, 2026
Retailer 2£164 GBP
Retailer 3£190 GBP
Retailer 9£204 GBP
Retailer 13£231 GBP
Retailer 8£262 GBP
Retailer 14£348 GBP
Retailer 7£378 GBP
Retailer 10£402 GBP
Retailer 4£406 GBP
Retailer 11£451 GBP
NZ Jewellers£654 GBP
Retailer 12£811 GBP
Retailer 5£921 GBP
Retailer 6£1,434 GBP

3 data points across 14 retailers

10 retailers£164 GBP to £654 GBP

Cheapest Retailer
-
£164 GBP
$219 USD
A
Retailer 2
-
£190 GBP
$253 USD
View
A
Retailer 3
-
£204 GBP
$271 USD
View
A
Retailer 4
-
£231 GBP
HK$2,400 HKD
View
A
Retailer 5
-
£262 GBP
View
B+
Retailer 6
-
£348 GBP
$464 USD
View
A
Retailer 7
-
£378 GBP
View
A
Retailer 8
-
£402 GBP
$535 USD
View
B+
Retailer 9
-
£451 GBP
$600 USD
View
Most Expensive
B
NZ Jewellers
50bc0bdf-1e6f-4035-928e-b11690bafe16 · Oct 28
£654 GBP
$871 USD
View
9 more retailers have this diamond
Prices start from £164 GBPSave up to £490 GBP

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
£164 GBP