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Radiant|Lab Grown|IGI

0.77ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG733508718

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

Certificate IGI LG733508718

Diamond specifications and retailer prices

From £107 GBP
$144 USD
As of October 30, 2026
Save £651 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £758 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.77ct lab-grown radiant diamond

This 0.77ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733508718 or 733508718. Listed at 19 retailers as of October 30, 2026, with prices from £107 to £758, a £651 spread on the same certified stone. Reve Diamonds lists it at £758. 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

0.77
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733508718
Dimensions6.49 × 4.49 × 3.03 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.49 mm4.49 mm0.77 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733508718
Side View
Table 68.0%Crown 43.8°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 67.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £358 GBP|Low: £104 GBP|High: £632 GBP|Avg: £257 GBP|-25.0%
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
October 30, 2026
Retailer 13£107 GBP
Retailer 7£121 GBP
Retailer 4£125 GBP
Retailer 2£134 GBP
Retailer 5£134 GBP
Retailer 14£181 GBP
Retailer 11£190 GBP
Retailer 8£230 GBP
Retailer 10£252 GBP
Retailer 6£309 GBP
Retailer 12£338 GBP
Retailer 1£358 GBP
Retailer 3£429 GBP
Retailer 9£627 GBP

44 data points across 14 retailers

19 retailers£107 GBP to £758 GBP

A
Cheapest Retailer
-
£107 GBP
$144 USD
A
Retailer 2
-
£121 GBP
$162 USD
View
Final sale: no returns
A
Retailer 3
-
£125 GBP
$167 USD
View
A
Retailer 4
-
£134 GBP
$179 USD
View
A
Retailer 5
-
£134 GBP
$179 USD
View
A
Retailer 6
-
£153 GBP
HK$1,600 HKD
View
A
Retailer 7
-
£175 GBP
$235 USD
View
A
Retailer 8
-
£181 GBP
$242 USD
View
A
Retailer 9
-
£190 GBP
$255 USD
View
B+
Retailer 10
-
£230 GBP
View
Retailer 11
-
£252 GBP
€322 EUR
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£309 GBP
$414 USD
View
B
Retailer 13
-
£338 GBP
$453 USD
View
B
Retailer 14
-
£358 GBP
$480 USD
View
B
Retailer 15
-
£369 GBP
SGD 668 SGD
View
B
Retailer 16
-
£429 GBP
$575 USD
View
B
Retailer 17
-
£471 GBP
$631 USD
View
B
Retailer 18
-
£627 GBP
View
Most Expensive
B
Reve Diamonds
CBC7C88FF · Oct 30
£758 GBP
$1,016 USD
View
18 more retailers have this diamond
Prices start from £107 GBPSave up to £651 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
0.77ct Radiant
£107 GBP