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Round|Lab Grown|IGI

1.70ct K VS1 Round Lab Grown Diamond

EX • K/VS1 • IGI LG425065337

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425065337

Diamond specifications and retailer prices

From £1,813 GBP
As of November 5, 2026
Save £2,065 GBP (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,615 GBP at MOH London · As of November 5, 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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG425065337 or 425065337. Listed at 10 retailers as of November 3, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425065337
Dimensions7.80 × 7.83 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.80 mm7.83 mm1.70 ctK / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425065337
Side View
Table 60.5%Crown 31.5°Girdle: UNDPavilion 40.2°Culet: NoneDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £5,615 GBP|Low: £1,740 GBP|High: £6,020 GBP|Avg: £3,373 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 7£1,813 GBP
Retailer 10£1,973 GBP
Retailer 8£2,103 GBP
Retailer 6£2,225 GBP
Retailer 12£2,635 GBP
Retailer 11£2,890 GBP
Retailer 5£3,153 GBP
Retailer 9£3,279 GBP
Retailer 2£3,878 GBP
Retailer 4£4,706 GBP
MOH London£5,615 GBP
Retailer 3£6,020 GBP

19 data points across 12 retailers

10 retailers£1,813 GBP to £3,878 GBP

B+
Cheapest Retailer
-
£1,813 GBP
B
Retailer 2
-
£1,973 GBP
View
B
Retailer 3
-
£2,103 GBP
View
Retailer 4
-
£2,103 GBP
View
Price last confirmed 25 days ago
B
Retailer 5
-
£2,225 GBP
View
B
Retailer 6
-
£2,890 GBP
View
B
Retailer 7
-
£3,153 GBP
View
B
Retailer 8
-
£3,279 GBP
View
B
Retailer 9
-
£3,878 GBP
View
Most Expensive
MOH London
LG425065337 · Nov 5
£5,615 GBP
View
Price under review
9 more retailers have this diamond
Prices start from £1,813 GBPSave up to £2,065 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.

B+
1.70ct Round
£1,813 GBP