CaratHunter
Plans
Radiant|Lab Grown|IGI

1.56ct G SI1 Radiant Lab Grown Diamond

EX • G/SI1 • IGI LG605366722

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG605366722

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of November 1, 2026
Save £768 GBP (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £958 GBP at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG605366722 or 605366722. Listed at 16 retailers as of November 1, 2026, with prices from £190 to £958, a £768 spread on the same certified stone. Reve Diamonds lists it at £958. 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

1.56
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle30.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605366722
Dimensions8.50 × 5.49 × 3.67 mm
L/W Ratio1.55
Culet sizePointed
Top View
8.50 mm5.49 mm1.56 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605366722
Side View
Table 66.0%Crown 43.3°Girdle: MediumPavilion 30.5°Culet: NoneDepth 66.8%

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: Nov 1
Current: £846 GBP|Low: £163 GBP|High: £857 GBP|Avg: £405 GBP
Retailer 1
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
November 1, 2026
Retailer 12£170 GBP
Retailer 6£190 GBP
Retailer 3£198 GBP
Retailer 4£211 GBP
Retailer 13£211 GBP
Retailer 8£353 GBP
Retailer 2£360 GBP
Retailer 9£384 GBP
Retailer 7£391 GBP
Retailer 5£458 GBP
Retailer 11£552 GBP
Retailer 10£661 GBP
Retailer 14£679 GBP
Retailer 1£846 GBP

39 data points across 14 retailers

16 retailers£190 GBP to £958 GBP

Retailer 1
-
£170 GBP
$228 USD
Price last confirmed 11 days ago
A
Retailer 2
-
£190 GBP
$255 USD
View
Final sale: no returns
Retailer 3
-
£198 GBP
$265 USD
View
Price last confirmed 12 days ago
Retailer 4
-
£211 GBP
$283 USD
View
Price last confirmed 16 days ago
Retailer 5
-
£211 GBP
$283 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
£353 GBP
€450 EUR
View
A
Retailer 7
-
£360 GBP
$482 USD
View
A
Retailer 8
-
£384 GBP
$514 USD
View
A
Retailer 9
-
£391 GBP
View
B+
Retailer 10
-
£458 GBP
$613 USD
View
B
Retailer 11
-
£552 GBP
$739 USD
View
Retailer 12
-
£661 GBP
$885 USD
View
Price last confirmed 14 days ago
Retailer 13
-
£679 GBP
$910 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
£718 GBP
$962 USD
View
B
Retailer 15
-
£846 GBP
View
Most Expensive
B
Reve Diamonds
D19BAF116 · Nov 1
£958 GBP
$1,284 USD
View
15 more retailers have this diamond
Prices start from £190 GBPSave up to £768 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
1.56ct Radiant
£190 GBP