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Round|Lab Grown|IGI

1.70ct J SI1 Round Lab Grown Diamond

VG • J/SI1 • IGI LG447001293

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447001293

Diamond specifications and retailer prices

From £716 GBP
$960 USD
As of October 30, 2026
Save £2,938 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,655 GBP at MOH London · As of October 27, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG447001293 or 447001293. Listed at 12 retailers as of October 27, 2026, with prices from £716 to £3,655, a £2,938 spread on the same certified stone. MOH London lists it at £3,655. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001293
Dimensions7.60 × 7.65 × 4.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.60 mm7.65 mm1.70 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001293
Side View
Table 59.0%Crown 32.2°Girdle: ThickPavilion 40.4°Culet: NoneDepth 60.6%

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: £3,655 GBP|Low: £716 GBP|High: £3,698 GBP|Avg: £1,680 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
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2£716 GBP
Retailer 8£979 GBP
Retailer 11£1,066 GBP
Retailer 13£1,096 GBP
Retailer 9£1,136 GBP
Retailer 14£1,136 GBP
Retailer 3£1,265 GBP
Retailer 7£1,491 GBP
Retailer 5£1,570 GBP
Retailer 10£1,797 GBP
Retailer 4£2,117 GBP
Retailer 12£2,129 GBP
Retailer 6£3,250 GBP
MOH London£3,655 GBP

25 data points across 14 retailers

12 retailers£716 GBP to £3,655 GBP

A
Cheapest Retailer
-
£716 GBP
$960 USD
B+
Retailer 2
-
£979 GBP
$1,312 USD
View
B+
Retailer 3
-
£1,066 GBP
$1,428 USD
View
B+
Retailer 4
-
£1,096 GBP
$1,469 USD
View
Final sale: no returns
Retailer 5
-
£1,136 GBP
$1,522 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£1,136 GBP
$1,522 USD
View
B
Retailer 7
-
£1,265 GBP
$1,695 USD
View
B+
Retailer 8
-
£1,491 GBP
View
B
Retailer 9
-
£1,797 GBP
$2,408 USD
View
B
Retailer 10
-
£2,117 GBP
$2,837 USD
View
B
Retailer 11
-
£2,129 GBP
$2,853 USD
View
Most Expensive
B
MOH London
LG447001293 · Oct 27
£3,655 GBP
View
11 more retailers have this diamond
Prices start from £716 GBPSave up to £2,938 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