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Oval|Lab Grown|IGI

1.58ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG789633250

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG789633250

Diamond specifications and retailer prices

From £151 GBP
$202 USD
As of October 26, 2026
Save £760 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £911 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.58ct lab-grown oval diamond

This 1.58ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG789633250 or 789633250. Listed at 18 retailers as of October 26, 2026, with prices from £151 to £911, a £760 spread on the same certified stone. Brilliant Earth lists it at £911. 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

1.58
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789633250
Dimensions9.70 × 6.50 × 3.97 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.70 mm6.50 mm1.58 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789633250
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 61.1%

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 26
Current: £911 GBP|Low: £145 GBP|High: £911 GBP|Avg: £421 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
October 31, 2026
Retailer 17£151 GBP
Retailer 7£168 GBP
Retailer 15£175 GBP
Retailer 16£187 GBP
Retailer 11£209 GBP
Retailer 14£210 GBP
Retailer 3£305 GBP
Retailer 5£325 GBP
Retailer 12£341 GBP
Retailer 8£381 GBP
Retailer 2£402 GBP
Retailer 9£406 GBP
Retailer 6£484 GBP
Retailer 4£602 GBP
Retailer 10£608 GBP
Retailer 18£735 GBP
Retailer 13£876 GBP
Brilliant Earth£911 GBP

40 data points across 18 retailers

18 retailers£151 GBP to £911 GBP

A
Cheapest Retailer
-
£151 GBP
$202 USD
A
Retailer 2
-
£175 GBP
$234 USD
View
A
Retailer 3
-
£187 GBP
$251 USD
View
A
Retailer 4
-
£209 GBP
View
A
Retailer 5
-
£210 GBP
HK$2,200 HKD
View
Retailer 6
-
£305 GBP
€389 EUR
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£325 GBP
$435 USD
View
A
Retailer 8
-
£341 GBP
View
A
Retailer 9
-
£381 GBP
$510 USD
View
A
Retailer 10
-
£402 GBP
A$828 AUD
View
A
Retailer 11
-
£406 GBP
$544 USD
View
B+
Retailer 12
-
£484 GBP
$649 USD
View
B+
Retailer 13
-
£602 GBP
$806 USD
View
B+
Retailer 14
-
£608 GBP
SGD 1,100 SGD
View
Retailer 15
-
£687 GBP
$920 USD
View
Price last confirmed 9 days ago
Retailer 16
-
£735 GBP
$985 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
£876 GBP
View
Most Expensive
B
Brilliant Earth
18521721A · Oct 29
£911 GBP
$1,220 USD
View
17 more retailers have this diamond
Prices start from £151 GBPSave up to £760 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
1.58ct Oval
£151 GBP