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Round|Lab Grown|IGI

1.70ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG436046932

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436046932

Diamond specifications and retailer prices

From £702 GBP
$940 USD
As of October 30, 2026
Save £2,748 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,449 GBP at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046932 or 436046932. Listed at 10 retailers as of October 29, 2026, with prices from £702 to £3,449, a £2,748 spread on the same certified stone. MOH London lists it at £3,449. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046932
Dimensions7.66 × 7.69 × 4.63 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.66 mm7.69 mm1.70 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046932
Side View
Table 59.5%Crown 33.8°GirdlePavilion 40.3°Culet: NoneDepth 60.2%

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 30
Current: £3,449 GBP|Low: £702 GBP|High: £3,472 GBP|Avg: £1,746 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2£702 GBP
Retailer 4£1,036 GBP
Retailer 7£1,127 GBP
Retailer 9£1,160 GBP
Retailer 5£1,202 GBP
Retailer 11£1,647 GBP
Retailer 6£1,897 GBP
Retailer 10£2,180 GBP
Retailer 8£2,252 GBP
Retailer 3£2,689 GBP
MOH London£3,449 GBP

14 data points across 11 retailers

10 retailers£702 GBP to £3,449 GBP

A
Cheapest Retailer
-
£702 GBP
$940 USD
B+
Retailer 2
-
£1,036 GBP
$1,388 USD
View
B+
Retailer 3
-
£1,127 GBP
$1,510 USD
View
B+
Retailer 4
-
£1,160 GBP
$1,554 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,202 GBP
$1,610 USD
View
Retailer 6
-
£1,202 GBP
$1,610 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£1,897 GBP
$2,542 USD
View
B
Retailer 8
-
£2,180 GBP
$2,921 USD
View
B
Retailer 9
-
£2,252 GBP
$3,017 USD
View
Most Expensive
B
MOH London
LG436046932 · Oct 29
£3,449 GBP
View
9 more retailers have this diamond
Prices start from £702 GBPSave up to £2,748 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
£702 GBP