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Round|Lab Grown|IGI

1.70ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG573380065

Shape and cutting style on the report: Round brilliant

Certificate IGI LG573380065

Diamond specifications and retailer prices

From £138 GBP
$185 USD
As of November 1, 2026
Save £660 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £798 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round 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 LG573380065 or 573380065. Listed at 13 retailers as of November 1, 2026, with prices from £138 to £798, a £660 spread on the same certified stone. MOH London lists it at £798. 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

1.70
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573380065
Dimensions7.68 × 7.63 × 4.74 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.68 mm7.63 mm1.70 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573380065
Side View
Table 56.5%Crown 35.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.1%

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: Nov 1
Current: £798 GBP|Low: £132 GBP|High: £807 GBP|Avg: £336 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£138 GBP
Retailer 10£159 GBP
Retailer 3£171 GBP
Retailer 8£171 GBP
Retailer 6£301 GBP
Retailer 2£304 GBP
Retailer 4£308 GBP
Retailer 9£369 GBP
Retailer 11£548 GBP
Retailer 5£579 GBP
MOH London£798 GBP

42 data points across 11 retailers

13 retailers£138 GBP to £798 GBP

A
Cheapest Retailer
-
£138 GBP
$185 USD
A
Retailer 2
-
£159 GBP
$214 USD
View
Retailer 3
-
£171 GBP
$229 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£171 GBP
$229 USD
View
B+
Retailer 5
-
£301 GBP
$404 USD
View
A
Retailer 6
-
£304 GBP
View
A
Retailer 7
-
£308 GBP
View
A
Retailer 8
-
£369 GBP
$495 USD
View
B+
Retailer 9
-
£410 GBP
$550 USD
View
B+
Retailer 10
-
£548 GBP
$736 USD
View
B
Retailer 11
-
£579 GBP
$777 USD
View
B+
Retailer 12
-
£589 GBP
$790 USD
View
Most Expensive
B
MOH London
LG573380065 · Nov 1
£798 GBP
View
12 more retailers have this diamond
Prices start from £138 GBPSave up to £660 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
1.70ct Round
£138 GBP