CaratHunter
Plans
Oval|Lab Grown|IGI

1.57ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG770620602

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG770620602

Diamond specifications and retailer prices

From £851 GBP
$1,140 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £851 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770620602 or 770620602. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.57
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770620602
Dimensions9.17 × 6.68 × 4.08 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Top View
9.17 mm6.68 mm1.57 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770620602
Side View
Table 62.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £851 GBP|Low: £183 GBP|High: £851 GBP|Avg: £358 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
April 14, 2026
Retailer 5£183 GBP
Retailer 3£276 GBP
Retailer 2£331 GBP
Retailer 4£475 GBP
Brilliant Earth£851 GBP

9 data points across 5 retailers

1 retailer

B
Brilliant Earth
17530178A · Oct 31
£851 GBP
$1,140 USD
View

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.

B
1.57ct Oval
£851 GBP