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Radiant|Lab Grown|IGI

1.70ct D SI2 Radiant Lab Grown Diamond

D/SI2 • IGI LG797641301

Certificate IGI LG797641301

Diamond specifications and retailer prices

From £931 GBP
$1,240 USD
As of October 30, 2026
Save £233 GBP (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,164 GBP at Zales · As of October 30, 2026
View at Zales

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included) and certified by IGI LG797641301 or 797641301. Listed at 3 retailers as of October 30, 2026, with prices from £931 to £1,164, a £233 spread on the same certified stone. Zales lists it at £1,164. 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
D
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG797641301
Dimensions7.81 × 5.99 mm
L/W Ratio1.30
Top View
7.81 mm5.99 mm1.70 ctD / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797641301
Side View
Table 65.0%CrownGirdle: MediumPavilionCulet: NoneDepth 67.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £931 GBP|Low: £931 GBP|High: £1,164 GBP|Avg: £1,071 GBP
Retailer 1
Retailer 2
Zales
October 1, 2026
Retailer 1£931 GBP
Retailer 2£1,164 GBP
Zales£1,164 GBP

2 data points across 3 retailers

3 retailers£931 GBP to £1,164 GBP

B
Cheapest Retailer
-
£931 GBP
$1,240 USD
C
Retailer 2
-
£1,164 GBP
$1,550 USD
View
Most Expensive
C
Zales
528604737 · Oct 30
£1,164 GBP
$1,550 USD
View
2 more retailers have this diamond
Prices start from £931 GBPSave up to £233 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 Radiant
£931 GBP