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Radiant|Lab Grown|IGI

0.87ct I SI1 Radiant Lab Grown Diamond

VG • I/SI1 • IGI LG407950377

Shape and cutting style on the report: Radiant cut

Certificate IGI LG407950377

Diamond specifications and retailer prices

From $740 AUD
$520 USD
As of October 31, 2026
Save $1,829 AUD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,247 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 0.87ct lab-grown radiant diamond

This 0.87ct lab-grown radiant sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407950377 or 407950377. Listed at 11 retailers as of October 31, 2026, with a 247% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.87
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle43.6°
Pavilion angle30.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407950377
Dimensions6.16 × 4.83 × 3.17 mm
L/W Ratio1.28
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.16 mm4.83 mm0.87 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407950377
Side View
Table 68.0%Crown 43.6°Girdle: Slightly ThickPavilion 30.8°Culet: NoneDepth 65.6%

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: Oct 31
Current: $4,247 AUD|Low: $740 AUD|High: $4,292 AUD|Avg: $1,840 AUD|+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
October 30, 2026
Retailer 2$740 AUD
Retailer 7$787 AUD
Retailer 12$881 AUD
Retailer 11$883 AUD
Retailer 8$977 AUD
Retailer 3$1,167 AUD
Retailer 10$1,508 AUD
Retailer 5$1,623 AUD
Retailer 6$2,521 AUD
Retailer 9$2,570 AUD
Retailer 4$3,925 AUD
MOH London$4,247 AUD

21 data points across 12 retailers

11 retailers$740 AUD to $2,570 AUD

B+
Cheapest Retailer
-
$740 AUD
$520 USD
B+
Retailer 2
-
$787 AUD
$553 USD
View
B
Retailer 3
-
$881 AUD
$619 USD
View
Final sale: no returns
B
Retailer 4
-
$883 AUD
$620 USD
View
Retailer 5
-
$977 AUD
$686 USD
View
Price last confirmed 15 days ago
B
Retailer 6
-
$977 AUD
$686 USD
View
B
Retailer 7
-
$1,508 AUD
$1,059 USD
View
B
Retailer 8
-
$1,623 AUD
€1,086 EUR
View
C
Retailer 9
-
$2,521 AUD
$1,771 USD
View
C
Retailer 10
-
$2,570 AUD
$1,805 USD
View
Most Expensive
MOH London
LG407950377 · Oct 26
$4,247 AUD
£2,349 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $740 AUDSave up to $1,829 AUD

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+
0.87ct Radiant
$740 AUD