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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 $938 NZD
As of November 6, 2026
Save $2,318 NZD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,361 NZD at MOH London · As of November 5, 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 November 6, 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: Nov 6
Current: $5,361 NZD|Low: $938 NZD|High: $5,439 NZD|Avg: $2,325 NZD|-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 2$938 NZD
Retailer 7$998 NZD
Retailer 12$1,117 NZD
Retailer 11$1,118 NZD
Retailer 8$1,237 NZD
Retailer 3$1,479 NZD
Retailer 10$1,910 NZD
Retailer 5$2,056 NZD
Retailer 6$3,195 NZD
Retailer 9$3,256 NZD
Retailer 4$4,973 NZD
MOH London$5,361 NZD

20 data points across 12 retailers

11 retailers$938 NZD to $3,256 NZD

B+
Cheapest Retailer
-
$938 NZD
B+
Retailer 2
-
$998 NZD
View
B
Retailer 3
-
$1,117 NZD
View
Final sale: no returns
B
Retailer 4
-
$1,118 NZD
View
Retailer 5
-
$1,237 NZD
View
Price last confirmed 22 days ago
B
Retailer 6
-
$1,237 NZD
View
B
Retailer 7
-
$1,910 NZD
View
B
Retailer 8
-
$2,056 NZD
View
C
Retailer 9
-
$3,195 NZD
View
C
Retailer 10
-
$3,256 NZD
View
Most Expensive
MOH London
LG407950377 · Nov 5
$5,361 NZD
£2,340 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $938 NZDSave up to $2,318 NZD

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
$938 NZD