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Round|Lab Grown|IGI

1.70ct I SI2 Round Lab Grown Diamond

VG • I/SI2 • IGI LG440013946

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440013946

Diamond specifications and retailer prices

From £716 GBP
$960 USD
As of October 30, 2026
Save £2,733 GBP (79%) 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 very-good cut grade and certified by IGI LG440013946 or 440013946. Listed at 10 retailers as of October 29, 2026, with prices from £716 to £3,449, a £2,733 spread on the same certified stone. MOH London lists it at £3,449. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440013946
Dimensions7.54 × 7.59 × 4.77 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.54 mm7.59 mm1.70 ctI / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440013946
Side View
Table 54.5%Crown 36.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.0%

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: £716 GBP|High: £3,472 GBP|Avg: £1,752 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£716 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

15 data points across 11 retailers

10 retailers£716 GBP to £3,449 GBP

A
Cheapest Retailer
-
£716 GBP
$960 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
LG440013946 · Oct 29
£3,449 GBP
View
9 more retailers have this diamond
Prices start from £716 GBPSave up to £2,733 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
£716 GBP